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Jing Z, Dong Y, Zhang L. Nanoporous silver fabricated with pretreated Ag-Al alloy toward surface enhanced Raman sensing. Nanotechnology 2024; 35:325703. [PMID: 38688241 DOI: 10.1088/1361-6528/ad4559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Accepted: 04/30/2024] [Indexed: 05/02/2024]
Abstract
Nanoporous silver (NPS), characterized by its three-dimensional bi-continuous interpenetrating ligament channel structure, is a good candidate for surface enhanced Raman scattering (SERS), attributed to its exceptional surface-to-volume ratio and significant SERS enhancement capabilities. Here, we have successfully fabricated NPS through the dealloying ofα-terpineol (α-TPN) coated Ag55Al45alloy. The resultingα-NPS exhibits uniform ligaments and nanopore sizes, maintaining high SERS performance even after being exposed to air for more than one month. The pretreatment of precusor alloy withα-TPN is crucial not only for the formation of nanoporous structure but also for ensuring the long term stability ofα-NPS. Specifically,α-TPN functions as a surfactant, facilitating atomic diffusion to achieve a superior interconnected NPS. Furthermore, during the dealloying process, the carbonization ofα-TPN serves as a protective layer, effectively inhibiting the oxidation of silver.
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Affiliation(s)
- Zhiyu Jing
- School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, People's Republic of China
| | - Yongle Dong
- School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, People's Republic of China
| | - Ling Zhang
- School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, People's Republic of China
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2
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Eldridge BK, Gomrok S, Barr JW, Chaffin EA, Fielding L, Sachs C, Stickels K, Williams P, Wang Y. An Investigation on the Use of Au@SiO 2@Au Nanomatryoshkas as Gap-Enhanced Raman Tags. Nanomaterials (Basel) 2023; 13:2893. [PMID: 37947737 PMCID: PMC10650036 DOI: 10.3390/nano13212893] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 10/26/2023] [Accepted: 10/28/2023] [Indexed: 11/12/2023]
Abstract
Gap-enhanced Raman tags are a new type of optical probe that have wide applications in sensing and detection. A gap-enhanced Raman tag is prepared by embedding Raman molecules inside a gap between two plasmonic metals such as an Au core and Au shell. Even though placing Raman molecules beneath an Au shell seems counter-intuitive, it has been shown that such systems produce a stronger surface-enhanced Raman scattering response due to the strong electric field inside the gap. While the theoretical support of the stronger electric field inside the gap was provided in the literature, a comprehensive understanding of how the electric field inside the gap compares with that of the outer surface of the particle was not readily available. We investigated Au@SiO2@Au nanoparticles with diameters ranging from 35 nm to 70 nm with varying shell (2.5-10 nm) and gap (2.5-15 nm) thicknesses and obtained both far-field and near-field spectra. The extinction spectra from these particles always have two peaks. The low-energy peak redshifts with the decreasing shell thickness. However, when the gap thickness decreases, the low-energy peaks first blueshift and then redshift, producing a C-shape in the peak position. For every system we investigated, the near-field enhancement spectra were stronger inside the gap than on the outer surface of the nanoparticle. We find that a thin shell combined with a thin gap will produce the greatest near-field enhancement inside the gap. Our work fills the knowledge gap between the exciting potential applications of gap-enhanced Raman tags and the fundamental knowledge of enhancement provided by the gap.
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Affiliation(s)
- Brinton King Eldridge
- Department of Chemistry, University of Memphis, Memphis, TN 38152, USA; (B.K.E.); (S.G.)
- Department of Biological, Physical, and Human Sciences, Freed-Hardeman University, Henderson, TN 38340, USA; (J.W.B.); (E.A.C.); (L.F.); (C.S.); (K.S.); (P.W.)
| | - Saghar Gomrok
- Department of Chemistry, University of Memphis, Memphis, TN 38152, USA; (B.K.E.); (S.G.)
| | - James W. Barr
- Department of Biological, Physical, and Human Sciences, Freed-Hardeman University, Henderson, TN 38340, USA; (J.W.B.); (E.A.C.); (L.F.); (C.S.); (K.S.); (P.W.)
| | - Elise Anne Chaffin
- Department of Biological, Physical, and Human Sciences, Freed-Hardeman University, Henderson, TN 38340, USA; (J.W.B.); (E.A.C.); (L.F.); (C.S.); (K.S.); (P.W.)
| | - Lauren Fielding
- Department of Biological, Physical, and Human Sciences, Freed-Hardeman University, Henderson, TN 38340, USA; (J.W.B.); (E.A.C.); (L.F.); (C.S.); (K.S.); (P.W.)
| | - Christian Sachs
- Department of Biological, Physical, and Human Sciences, Freed-Hardeman University, Henderson, TN 38340, USA; (J.W.B.); (E.A.C.); (L.F.); (C.S.); (K.S.); (P.W.)
| | - Katie Stickels
- Department of Biological, Physical, and Human Sciences, Freed-Hardeman University, Henderson, TN 38340, USA; (J.W.B.); (E.A.C.); (L.F.); (C.S.); (K.S.); (P.W.)
| | - Paiton Williams
- Department of Biological, Physical, and Human Sciences, Freed-Hardeman University, Henderson, TN 38340, USA; (J.W.B.); (E.A.C.); (L.F.); (C.S.); (K.S.); (P.W.)
| | - Yongmei Wang
- Department of Chemistry, University of Memphis, Memphis, TN 38152, USA; (B.K.E.); (S.G.)
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Li J, Yi W, Yin M, Yang H, Li J, Li Y, Jiao Z, Bai H, Zou M, Xi G. Plasmonic Rare-Earth Nanosheets as Surface Enhanced Raman Scattering Substrates with High Sensitivity and Stability for Multicomponent Analysis. ACS Nano 2022; 16:1160-1169. [PMID: 35023714 DOI: 10.1021/acsnano.1c08961] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Looking for high-performance substrates is an important goal of current surface enhanced Raman scattering (SERS) research. Herein, ultrathin multilayer rhenium (Re) nanosheets as a rare-earth metal substrate are found to have extraordinary SERS performance. These Re nanosheets are prepared through a convenient low-temperature molten salt strategy, and their total thickness is ∼5 nm, including 3-4 layers of ultrathin nanosheets with a thickness of only ∼1 nm. The viscosity of molten salt plays a key role in the formation of these ultrathin layered nanosheets. These nanosheets exhibit a strong and well-defined localized surface plasmon resonance (SPR) effect in the visible light region. The plasmonic Re nanosheets show excellent SERS performance with high sensitivity, chemical stability, and signal repeatability. The lowest detection limit for toxic compounds is 10-12 mol, and the corresponding Raman enhancement factor is 9.1 × 108. A composite enhancement mechanism caused by localized-SPR and charge transport has played an important role in the rare-earth-SERS. High-throughput multiassay analysis is performed on the flexible membrane assembled from the Re nanosheets, which highlights that our system is capable of rapid separation and identification of the samples containing various analytes.
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Affiliation(s)
- Jingbin Li
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P.R. China
- College of Sciences, China Jiliang University, Hangzhou 310018, P.R. China
| | - Wencai Yi
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, P.R. China
| | - Meng Yin
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P.R. China
| | - Haifeng Yang
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P.R. China
| | - Junfang Li
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P.R. China
| | - Yahui Li
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P.R. China
| | - Zhiwei Jiao
- College of Sciences, China Jiliang University, Hangzhou 310018, P.R. China
| | - Hua Bai
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P.R. China
| | - Mingqiang Zou
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P.R. China
| | - Guangcheng Xi
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P.R. China
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Abstract
Molecularly imprinted polymers (MIPs) are tailor-made functional composites which selectively recognize and bind the target molecule of interest. MIP composites are products of the massively cross-linked polymer matrices, generated via polymerization, with bio-inspired recognition cavities that are morphologically similar in size, shape and spatial patterns to the target conformation. These features have enabled researchers to expand the field of molecular recognition, more specifically for target with peculiar requirements. Nevertheless, MIPs alone are characterized with weak sensitivity. Besides, nanoparticles (NPs) are remarkably sensitive but also suffer from poor selectivity. Intriguingly, the combination of the two results in a highly sensitive and selective MIP composite. For instance, the conjugation of different functional NPs with MIPs can generate new flexible target capture tools, either a dynamic sensor or a novel drug delivery system. In this regard, although the technology is considered an established and feasible approach, it is still perceived as a burgeoning technology for various fields, which makes it unceasingly worthy reviewing. Therefore, in this review, we attempt to give an update on various custom-made biosensors based on MIPs in combination with various NPs for the detection of mycotoxins, the toxic secondary metabolites of fungi. We first summarize the classification, prevalence, and toxicological characteristics of common mycotoxins. Next, we provide an overview of MIP composites and their characterization, and then segment the role of NPs with respect to common types of MIP-based sensors. At last, conclusions and outlook are discussed.
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Affiliation(s)
- Daniel Mukunzi
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Jean de Dieu Habimana
- Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Zhiyuan Li
- Key Laboratory of Regenerative Biology, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xiaobo Zou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
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Babich E, Scherbak S, Lubyankina E, Zhurikhina V, Lipovskii A. Power Spectral Density Analysis for Optimizing SERS Structures. Sensors (Basel) 2022; 22:593. [PMID: 35062554 PMCID: PMC8778882 DOI: 10.3390/s22020593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 01/07/2022] [Accepted: 01/11/2022] [Indexed: 02/06/2023]
Abstract
The problem of optimizing the topography of metal structures allowing Surface Enhanced Raman Scattering (SERS) sensing is considered. We developed a model, which randomly distributes hemispheroidal particles over a given area of the glass substrate and estimates SERS capabilities of the obtained structures. We applied Power Spectral Density (PSD) analysis to modeled structures and to atomic force microscope images widely used in SERS metal island films and metal dendrites. The comparison of measured and calculated SERS signals from differing characteristics structures with the results of PSD analysis of these structures has shown that this approach allows simple identification and choosing a structure topography, which is capable of providing the maximal enhancement of Raman signal within a given set of structures of the same type placed on the substrate.
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Affiliation(s)
- Ekaterina Babich
- Laboratory of Multifunctional Glassy Materials, World-Class Research Center “Advanced Digital Technologies”, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia; (E.B.); (S.S.); (V.Z.)
- Laboratory of Nanophotonics, Alferov University, Khlopina 8/3, 194021 St. Petersburg, Russia
| | - Sergey Scherbak
- Laboratory of Multifunctional Glassy Materials, World-Class Research Center “Advanced Digital Technologies”, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia; (E.B.); (S.S.); (V.Z.)
- Laboratory of Optics of Heterogeneous Structures and Optical Materials, Alferov University, Khlopina 8/3, 194021 St. Petersburg, Russia;
| | - Ekaterina Lubyankina
- Laboratory of Optics of Heterogeneous Structures and Optical Materials, Alferov University, Khlopina 8/3, 194021 St. Petersburg, Russia;
- Scientific Educational Center “Physics and Technology of Heterogeneous Materials and Nanoheterostructures”, Institute of Physics and Mechanics, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia
| | - Valentina Zhurikhina
- Laboratory of Multifunctional Glassy Materials, World-Class Research Center “Advanced Digital Technologies”, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia; (E.B.); (S.S.); (V.Z.)
| | - Andrey Lipovskii
- Laboratory of Multifunctional Glassy Materials, World-Class Research Center “Advanced Digital Technologies”, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya 29, 195251 St. Petersburg, Russia; (E.B.); (S.S.); (V.Z.)
- Laboratory of Optics of Heterogeneous Structures and Optical Materials, Alferov University, Khlopina 8/3, 194021 St. Petersburg, Russia;
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Wei Y, Pei H, Yan B, Zhu Y. The performance of surface enhanced Raman scattering and spatial resolution with triangular plate dimer from ultra-ultraviolet to near-infrared range. J Phys Condens Matter 2021; 34:045002. [PMID: 34670211 DOI: 10.1088/1361-648x/ac316d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 10/20/2021] [Indexed: 06/13/2023]
Abstract
The theoretical research on surface enhanced Raman spectroscopy (SERS) of triangular plate dimer (TPD) is of great significance for the design of experimental substrates. In this paper, the SERS properties of the TPD with Au, Ag, Al and Cu have been theoretical investigated in the ultra-ultraviolet, visible and near-infrared region. The influence of the TPD configuration, including the tip radian, the dimer distance and the aspect ratio on the electric field, Raman enhancement and spatial resolution are studied by the finite element method. The results show that there are dipole resonance band and quadruple dipole resonance band in the surface plasmon resonance band of TPD. The tip radian and dimer distance play the dominant role in the electric field enhancement, and the aspect ratio can be mainly used to tune the peak position of the electric field. The smaller tip radian and dimer distance will produce a stronger localized electric field and a small red shift of the peak position. Adjusting the aspect ratio can tune the position of electric field peak from ultraviolet (UV) to near-infrared without changing the peak value of the electric field significantly, especially for Al TPD. The maximum Raman enhancement factor of Au, Ag and Cu all reach 11 orders of magnitude, and 9 orders of magnitude for Al. The spatial resolution changes linearly with the gap distance, and the maximum spatial distributions of Au, Ag, Al and Cu achieve 0.65 nm, 0.67 nm, 0.69 nm and 0.70 nm with the dimer distance of 1 nm. Our results not only provide a better theoretical guidance for the optimization of TPD substrates in the SERS experiment, but also extend its application scope from ultra-UV to near-infrared range.
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Affiliation(s)
- Yong Wei
- College of Information Science and Engineering, Yanshan University, Qinhuangdao, 066004, People's Republic of China
- Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao, 066004, People's Republic of China
- College of Liren, Yanshan University, Qinhuangdao, 066004, People's Republic of China
| | - Huan Pei
- College of Information Science and Engineering, Yanshan University, Qinhuangdao, 066004, People's Republic of China
| | - Baoxin Yan
- Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao, 066004, People's Republic of China
| | - Yanying Zhu
- Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao, 066004, People's Republic of China
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7
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Zhou Y, Gu Q, Qiu T, He X, Chen J, Qi R, Huang R, Zheng T, Tian Y. Ultrasensitive Sensing of Volatile Organic Compounds Using a Cu-Doped SnO 2 -NiO p-n Heterostructure That Shows Significant Raman Enhancement*. Angew Chem Int Ed Engl 2021; 60:26260-26267. [PMID: 34611980 DOI: 10.1002/anie.202112367] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Indexed: 11/10/2022]
Abstract
Surface enhanced Raman scattering (SERS) based on chemical mechanism (CM) attracts tremendous attention for great selectivity and stability. However, low enhancement factor (EF) limits its practical applications for trace detection. Here, a novel sponge-like Cu-doping SnO2 -NiO p-n semiconductor heterostructure (SnO2 -NiOx /Cu), was first created as a CM-based SERS substrate with a significant EF of 1.46×1010 . This remarkable EF was mainly attributed to the enhanced charge-separation efficacy of p-n heterojunction and charge transfer resonance resulted from Cu doping. Moreover, the porous structure enriched the probe molecules, resulting in further SERS signals magnification. By immobilizing CuPc as an inner-reference element, SnO2 -NiOx /Cu was developed as a SERS nose for selective recognition of multiple lung cancer related VOCs down to ppb level. The information of VOCs was recorded in a barcode, demonstrating practical potential of a desktop SERS device for biomarker screening.
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Affiliation(s)
- Yan Zhou
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Dongchuan Road 500, Shanghai, 200241, China
| | - Qingyi Gu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Dongchuan Road 500, Shanghai, 200241, China
| | - Tianzhu Qiu
- Oncology department, Jiangsu Province Hospital, Guangzhou Road 300, Nanjing, 210000, China
| | - Xiao He
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Dongchuan Road 500, Shanghai, 200241, China.,Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Dongchuan Road 500, Shanghai, 200241, China
| | - Jinquan Chen
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Dongchuan Road 500, Shanghai, 200241, China
| | - Ruijuan Qi
- Key laboratory of Polar Materials and Devices (MOE), Department of Optoelectronics, East China Normal University, Dongchuan Road 500, Shanghai, 200241, China
| | - Rong Huang
- Key laboratory of Polar Materials and Devices (MOE), Department of Optoelectronics, East China Normal University, Dongchuan Road 500, Shanghai, 200241, China
| | - Tingting Zheng
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Dongchuan Road 500, Shanghai, 200241, China
| | - Yang Tian
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Dongchuan Road 500, Shanghai, 200241, China.,Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Dongchuan Road 500, Shanghai, 200241, China
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8
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Zhang Q, Xu G, Guo N, Wang T, Song P, Xia L. In-Situ Synthesis of Methyl Cellulose Film Decorated with Silver Nanoparticles as a Flexible Surface-Enhanced Raman Substrate for the Rapid Detection of Pesticide Residues in Fruits and Vegetables. Materials (Basel) 2021; 14:5750. [PMID: 34640144 DOI: 10.3390/ma14195750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 09/17/2021] [Accepted: 09/24/2021] [Indexed: 11/17/2022]
Abstract
The purpose of this study was to develop a flexible substrate methylcellulose-decorated silver nanoparticles (MC/Ag NPs) film and explore its application in fruits and vegetables by surface enhanced Raman spectroscopy (SERS) technology for rapid detection of pesticides. The performance of the MC/Ag NPs film substrate was characterized by Nile blue A (NBA), and the detection limit was as low as 10−8 M. The substrate also exhibited satisfactory Raman signal strength after two months of storage. The impressive sensitivity and stability were due to the excellent homogeneity of the silver nanoparticles that were grown in situ in the methylcellulose matrix, which generated “hot spots” between the silver nanoparticles without a large amount of aggregation, and resulted in the ultra-high sensitivity and excellent stability of the MC/Ag NPs film substrate. The MC/Ag NPs film substrate was used to detect thiram pesticides on tomato and cucumber peels, and the minimum detectable level of thiram was 2.4 ng/cm2, which was much lower than the maximum residue level. These results indicate that the MC/Ag NPs film is sensitive to rapid detection of multiple pesticides in food.
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Liu D, Song X, Yi W, Li Y, Kong Q, Bai H, Zou M, Xi G. General Microwave Route to Single-Crystal Porous Transition Metal Nitrides for Highly Sensitive and Stable Raman Scattering Substrates. Nano Lett 2021; 21:7724-7731. [PMID: 34477392 DOI: 10.1021/acs.nanolett.1c02541] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The synthesis of metallic transition metal nitrides (TMNs) has traditionally been performed under harsh conditions, which makes it difficult to prepare TMNs with high surface area and porosity due to the grain sintering. Herein, we report a general and rapid (30 s) microwave synthesis method for preparing TMNs with high specific surface area (122.6-141.7 m2 g-1) and porosity (0.29-0.34 cm3 g-1). Novel single-crystal porous WN, Mo2N, and V2N are first prepared by this method, which exhibits strong surface plasmon resonance, photothermal conversion, and surface-enhanced Raman scattering effects. Different from the conventional low-temperature microwave absorbing media such as water and polymers, as new concept absorbing media, hydrated metal oxides and metallic metal oxides are found to have a remarkable high-temperature microwave heating effect and play key roles in the formation of TMNs. The current research results provide a new-concept microwave method for preparing high lattice energy compounds with high specific surface.
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Affiliation(s)
- Damin Liu
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P. R. China
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Xiaoyu Song
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P. R. China
| | - Wencai Yi
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Yahui Li
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P. R. China
| | - Qinghong Kong
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Hua Bai
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P. R. China
| | - Mingqiang Zou
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P. R. China
| | - Guangcheng Xi
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P. R. China
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Li W, Tong X, Yang Z, Zhang J, Liu B, Chen CP. Improved Sensitivity of Surface-Enhanced Raman Scattering with Gold Nanoparticles-Insulator-Metal Sandwich Layers on Flat Sapphire Substrate. Nanomaterials (Basel) 2021; 11:2416. [PMID: 34578732 DOI: 10.3390/nano11092416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/12/2021] [Accepted: 09/13/2021] [Indexed: 11/16/2022]
Abstract
Surface-enhanced Raman scattering (SERS) as a high sensitivity analytical method for molecule detection has attracted much attention in recent research. In this work, we demonstrated an improved SERS substrate, which has the gold nanoparticles randomly distributed on a SiO2 interception layer over a gold thin film layer on the flat sapphire substrate (AuNP/SiO2/Au/Sapphire), over the dispersed gold nanoparticles on a silicon substrate (AuNP/Si), for detection of R6G (1 × 10−6 M) in a Raman microscope. The fabrication of sandwich layers on top of the sapphire substrate involves evaporation of a gold mirror as thick as 100 nm, plasma enhanced chemical vapor deposition of the silica insulator layer 10 nm thick, and evaporation of a thin gold layer 10 nm thick for forming gold nanoparticles. For comparison, a gold thin film with a thickness of 5 nm and 10 nm was evaporated on a silicon substrate, respectively (AuNP/Si), as the reference SERS substrates in the experiment. The AuNP/SiO2/Au/Sapphire substrate demonstrated improved sensitivity in detection of molecules in Raman microscopy, which can enable the molecules to be recognizable at a low laser power as 8.5 × 10−3 mW, 0.017 mW, 0.085 mW, and 0.17 mW for ultrashort exposure time. The simulation of AuNP/SiO2/Au/Sapphire substrate and AuNP/Si substrate, based on the finite-difference time-domain (FDTD) method, explained the improved sensitivity for detection of R6G molecules from the view of classical electromagnetics, and it suggested the optimized size for the gold nanoparticles and the optimized laser wavelength for Raman microscopy for further research.
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Das S, Goswami LP, Gayathri J, Tiwari S, Saxena K, Mehta DS. Fabrication of low cost highly structured silver capped aluminium nanorods as SERS substrate for the detection of biological pathogens. Nanotechnology 2021; 32:495301. [PMID: 34428748 DOI: 10.1088/1361-6528/ac2097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 08/24/2021] [Indexed: 06/13/2023]
Abstract
We report the fabrication of low cost highly structured silver (Ag) capped aluminium (Al) nanorods (NRs) as surface enhanced Raman spectroscopy (SERS) substrate utilising the glancing angle deposition technique. The nano-capping of silver onto the Al NRs can concentrate the local electric field within the minimal volume that can serve as hotspots. The average size of the Ag nanocaps was 50 nm. The newly proposed nanoporous Ag capped Al NRs as SERS substrate could detect the Raman signal of rhodamine 6G (R6G) up to 10-15molar concentration. The significant enhancement in the Raman signal of 107was achieved for Ag capped Al NRs considering R6G as a probe molecule. Using the developed SERS substrate, we recorded Raman spectra forEscherichia colibacteria with its concentration varying from 108colony forming units per ml (CFU ml-1) up to 102CFU ml-1. All the reported Raman spectra were acquired by a portable handheld Raman spectrometer. Hence, this newly proposed low cost, effective SERS substrate can be used commercially for the onsite detection of clinical pathogens. The 3D finite difference time domain simulation model was performed for Ag capped Al nanostructure to understand the generation of hotspots. The simulated results show excellent agreement with the experimental results. We fabricated uncapped Ag nanorods of similar dimensions and performed the experimental measurements and simulations for comparison. We found a significant enhancement in Ag capped Al NRs compared to the long Ag NRs. The description of the Raman signal enhancement has been elaborated.
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Affiliation(s)
- Sathi Das
- Bio-photonics and Green Photonics Laboratory, Department of Physics, Indian Institute of Technology Delhi, Hauz-Khas, New Delhi-110016, India
| | - Laxman Prasad Goswami
- Department of Physics, Indian Institute of Technology Delhi, Hauz-Khas, New Delhi-110016, India
| | - Jampana Gayathri
- Amity Institute of Renewable and Alternative Energy, Amity University, Uttar Pradesh, Sector-125 Noida-201303, India
| | - Shubham Tiwari
- Bio-photonics and Green Photonics Laboratory, Department of Physics, Indian Institute of Technology Delhi, Hauz-Khas, New Delhi-110016, India
| | - Kanchan Saxena
- Amity Institute of Renewable and Alternative Energy, Amity University, Uttar Pradesh, Sector-125 Noida-201303, India
| | - Dalip Singh Mehta
- Bio-photonics and Green Photonics Laboratory, Department of Physics, Indian Institute of Technology Delhi, Hauz-Khas, New Delhi-110016, India
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Abstract
γ-Mo2N and δ-MoN are the two most important molybdenum nitrides, but controllable preparation of them with high surface area has not been achieved. Herein, we achieved selective preparation of γ-Mo2N and δ-MoN. The key factor for the selective preparation of γ-Mo2N and δ-MoN is to control the crystal phase of the precursor MoO3. In H2O and NH3 mixed gas, the α-MoO3 nanoribbons are nitridated to obtain γ-Mo2N single-crystal porous nanobelts, while the h-MoO3 prisms are nitrided to obtain δ-MoN hierarchical porous columns. The corrosion effect of H2O plays a key role in the formation of single-crystal porous structure. The γ-Mo2N flexible membrane composed of the single-crystal porous nanobelts exhibits strong localized surface plasmon resonance and surface enhanced Raman scattering effect, which show highly sensitive response to polychlorinated phenol.
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Affiliation(s)
- Xiaoyu Song
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P. R. China
- School of the Environment and Safety engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Wencai Yi
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, P. R. China
| | - Junfang Li
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P. R. China
| | - Qinghong Kong
- School of the Environment and Safety engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Hua Bai
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P. R. China
| | - Guangcheng Xi
- Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, P. R. China
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13
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Pan XT, Liu YY, Qian SQ, Yang JM, Li Y, Gao J, Liu CG, Wang K, Xia XH. Free-Standing Single Ag Nanowires for Multifunctional Optical Probes. ACS Appl Mater Interfaces 2021; 13:19023-19030. [PMID: 33856193 DOI: 10.1021/acsami.1c02332] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Miniaturized and manipulable optical probes are the foundation for developing in situ characterization devices in confined space. We developed two methods for fabricating free-standing single Ag nanowires (AgNWs) directly at the tip of a glass capillary either by chemical or electrochemical reduction. The electrochemical nature of both methods resulted in a rapid growth rate of AgNWs up to 1.38 μm/s and a controllable length from 5 to 450 μm. The AgNWs with a unique anisotropic structure allow localized surface plasmon resonance and surface plasmon waveguides in the radial direction and axial direction, respectively. We verified the possibility of using single AgNWs as an optical dispersion device and waveguide probe. By controlling the experimental conditions, rough-surface AgNWs with high surface-enhanced Raman scattering (SERS) activity were also fabricated. These SERS-active probes also exhibited advantages in acquiring molecular information from a single living cell.
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Affiliation(s)
- Xiao-Tong Pan
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yu-Yang Liu
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of the Ministry of Education (MOE), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Si-Qi Qian
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jin-Mei Yang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yu Li
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Jia Gao
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Chun-Gen Liu
- Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of the Ministry of Education (MOE), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Kang Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xing-Hua Xia
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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14
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Pham XH, Seong B, Hahm E, Huynh KH, Kim YH, Kim J, Lee SH, Jun BH. Glucose Detection of 4-Mercaptophenylboronic Acid-Immobilized Gold-Silver Core-Shell Assembled Silica Nanostructure by Surface Enhanced Raman Scattering. Nanomaterials (Basel) 2021; 11:948. [PMID: 33917868 DOI: 10.3390/nano11040948] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/02/2021] [Accepted: 04/04/2021] [Indexed: 11/25/2022]
Abstract
The importance of glucose in many biological processes continues to garner increasing research interest in the design and development of efficient biotechnology for the sensitive and selective monitoring of glucose. Here we report on a surface-enhanced Raman scattering (SERS) detection of 4-mercaptophenyl boronic acid (4-MPBA)-immobilized gold-silver core-shell assembled silica nanostructure (SiO2@Au@Ag@4-MPBA) for quantitative, selective detection of glucose in physiologically relevant concentration. This work confirmed that 4-MPBA converted to 4-mercaptophenol (4-MPhOH) in the presence of H2O2. In addition, a calibration curve for H2O2 detection of 0.3 µg/mL was successfully detected in the range of 1.0 to 1000 µg/mL. Moreover, the SiO2@Au@Ag@4-MPBA for glucose detection was developed in the presence of glucose oxidase (GOx) at the optimized condition of 100 µg/mL GOx with 1-h incubation time using 20 µg/mL SiO2@Au@Ag@4-MPBA and measuring Raman signal at 67 µg/mL SiO2@Au@Ag. At the optimized condition, the calibration curve in the range of 0.5 to 8.0 mM was successfully developed with an LOD of 0.15 mM. Based on those strategies, the SERS detection of glucose can be achieved in the physiologically relevant concentration range and opened a great promise to develop a SERS-based biosensor for a variety of biomedicine applications.
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15
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Seong B, Bock S, Hahm E, Huynh KH, Kim J, Lee SH, Pham XH, Jun BH. Synthesis of Densely Immobilized Gold-Assembled Silica Nanostructures. Int J Mol Sci 2021; 22:ijms22052543. [PMID: 33802614 PMCID: PMC7961356 DOI: 10.3390/ijms22052543] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 02/25/2021] [Accepted: 02/26/2021] [Indexed: 02/06/2023] Open
Abstract
In this study, dense gold-assembled SiO2 nanostructure (SiO2@Au) was successfully developed using the Au seed-mediated growth. First, SiO2 (150 nm) was prepared, modified by amino groups, and incubated by gold nanoparticles (ca. 3 nm Au metal nanoparticles (NPs)) to immobilize Au NPs to SiO2 surface. Then, Au NPs were grown on the prepared SiO2@Au seed by reducing chloroauric acid (HAuCl4) by ascorbic acid (AA) in the presence of polyvinylpyrrolidone (PVP). The presence of bigger (ca. 20 nm) Au NPs on the SiO2 surface was confirmed by transmittance electronic microscopy (TEM) images, color changes to dark blue, and UV-vis spectra broadening in the range of 450 to 750 nm. The SiO2@Au nanostructure showed several advantages compared to the hydrofluoric acid (HF)-treated SiO2@Au, such as easy separation, surface modification stability by 11-mercaptopundecanoic acid (R-COOH), 11-mercapto-1-undecanol (R-OH), and 1-undecanethiol (R-CH3), and a better peroxidase-like catalysis activity for 5,5'-Tetramethylbenzidine (TMB) and hydrogen peroxide (H2O2) reaction. The catalytic activity of SiO2@Au was two times better than that of HF-treated SiO2@Au. When SiO2@Au nanostructure was used as a surface enhanced Raman scattering (SERS) substrate, the signal of 4-aminophenol (4-ATP) on the surface of SiO2@Au was also stronger than that of HF-treated SiO2@Au. This study provides a potential method for nanoparticle preparation which can be replaced for Au NPs in further research and development.
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Affiliation(s)
- Bomi Seong
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea; (B.S.); (S.B.); (E.H.); (K.-H.H.); (J.K.); (B.-H.J.)
| | - Sungje Bock
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea; (B.S.); (S.B.); (E.H.); (K.-H.H.); (J.K.); (B.-H.J.)
| | - Eunil Hahm
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea; (B.S.); (S.B.); (E.H.); (K.-H.H.); (J.K.); (B.-H.J.)
| | - Kim-Hung Huynh
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea; (B.S.); (S.B.); (E.H.); (K.-H.H.); (J.K.); (B.-H.J.)
| | - Jaehi Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea; (B.S.); (S.B.); (E.H.); (K.-H.H.); (J.K.); (B.-H.J.)
| | - Sang Hun Lee
- Department of Chemical and Biological Engineering, Hanbat National University, Daejeon 34158, Korea;
| | - Xuan-Hung Pham
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea; (B.S.); (S.B.); (E.H.); (K.-H.H.); (J.K.); (B.-H.J.)
- Correspondence: ; Tel.: +82-2-450-0521
| | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea; (B.S.); (S.B.); (E.H.); (K.-H.H.); (J.K.); (B.-H.J.)
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16
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Huang J, Tang C, Chen G, He Z, Wang T, He X, Yi T, Liu Y, Zhang L, Du K. Toward the Limitation of Dealloying: Full Spectrum Responsive Ultralow Density Nanoporous Gold for Plasmonic Photocatalytic SERS. ACS Appl Mater Interfaces 2021; 13:7735-7744. [PMID: 33533584 DOI: 10.1021/acsami.0c20766] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Plasmon-mediated chemical reaction has a great potential to create self-cleaning surface-enhanced Raman scattering (SERS) substrates. However, few works have been reported to promote this goal. Here, we report ultralow density nanoporous gold (ULDNPG) that possesses an impressive full spectrum responsive characteristic with a reflectivity lower than 5% in the waveband of 300-900 nm. ULDNPG was fabricated by a sandwich dealloying strategy from ultradilute Au-Ag solid solutions with the Au content as low as 1-5 at.%. The prepared ULDNPG presents excellent SERS properties, including high sensitivity, high uniformity, and reproducibility. The full spectrum responsive characteristic of ULDNPG leads to an obvious plasmonic photocatalytic activity. The short lifetime of the SP-excited hot carriers causes a restricted self-cleaning SERS property and a strong photothermal effect for ULDNPG structures.
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Affiliation(s)
- Jinglin Huang
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, P. R. China
| | - Cuilan Tang
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, P. R. China
| | - Guo Chen
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, P. R. China
| | - Zhibing He
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, P. R. China
| | - Tao Wang
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, P. R. China
| | - Xiaoshan He
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, P. R. China
| | - Taimin Yi
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, P. R. China
| | - Yansong Liu
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, P. R. China
| | - Ling Zhang
- Sichuan Co-Innovation Center for New Energetic Material, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Kai Du
- Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, P. R. China
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17
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Wang XM, Li X, Liu WH, Han CY, Wang XL. Gas Sensor Based on Surface Enhanced Raman Scattering. Materials (Basel) 2021; 14:E388. [PMID: 33466867 DOI: 10.3390/ma14020388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/31/2020] [Accepted: 01/06/2021] [Indexed: 11/25/2022]
Abstract
In order to address problems of safety and identification in gas detection, an optical detection method based on surface enhanced Raman scattering (SERS) was studied to detect ethanol vapor. A SERS device of silver nanoparticles modified polyvinylpyrrolidone (PVP) was realized by freeze-drying method. This SERS device was placed in a micro transparent cavity in order to inject ethanol vapor of 4% and obtain Raman signals by confocal Raman spectrometer. We compared different types of SERS devices and found that the modification of polyvinylpyrrolidone improves adsorption of ethanol molecules on surfaces of silver nanoparticle, and finally we provide the mechanism by theory and experiment. Finite Difference Time Domain(FDTD) simulation shows that single layer close-packed Ag nanoparticles have strong local electric field in a wide spectral range. In this study, we provide a case for safety and fingerprint recognition of ethanol vapor at room temperature and atmospheric pressure.
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18
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Haldavnekar R, Vijayakumar SC, Venkatakrishnan K, Tan B. Prediction of Cancer Stem Cell Fate by Surface-Enhanced Raman Scattering Functionalized Nanoprobes. ACS Nano 2020; 14:15468-15491. [PMID: 33175514 DOI: 10.1021/acsnano.0c06104] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Cancer stem cells (CSCs) are the fundamental building blocks of cancer dissemination, so it is desirable to develop a technique to predict the behavior of CSCs during tumor initiation and relapse. It will provide a powerful tool for pathological prognosis. Currently, there exists no method of such prediction. Here, we introduce nickel-based functionalized nanoprobe facilitated surface enhanced Raman scattering (SERS) for prediction of cancer dissemination by undertaking CSC-based surveillance. SERS profiling of CSCs of various cell lines (breast cancer, cervical cancer, and lung cancer) was compared with their cancer counterparts for the prediction of prognosis, with statistical significance of single-cell sensitivity. The single-cell sensitivity is critical as even a few CSCs are capable of initiating a tumor. Intermediate states of CSC transmutation to cancer cells and its reverse were monitored, and nanoprobe-assisted SERS profiling was undertaken. We experimentally demonstrated that the quasi-intermediate CSC states have dissimilar profiles during the transformation from cancer to CSC and vice versa enabling statistical differentiation without ambiguity. It was also observed that molecular signatures of these opposite pathways are cancer-type specific. This observation provided additional clarity to the current understanding of relatively unfamiliar quasi-intermediate states; making it possible to predict CSC dissemination for variety of cancers with ∼99% accuracy. Nano probe-based prediction of CSC fate is a powerful prediction tool for ultrasensitive prognosis of malignancy in a complex environment. Such CSC-based cancer prognosis has never been proposed before. This prediction technique has potential to provide insights for cancer diagnosis and prognosis as well as for obtaining information instrumental in designing of meaningful CSC-based cancer therapeutics.
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Affiliation(s)
- Rupa Haldavnekar
- Institute for Biomedical Engineering, Science and Technology (iBEST), Li Ka-Shing Knowledge Institute, 209 Victoria Street, Toronto, ON, Canada M5B 1T8
- Ultrashort Laser Nanomanufacturing Research Facility, Department of Mechanical and Industrial Engineering, Ryerson University, 350 Victoria Street, Toronto, ON, Canada M5B 2K3
- BioNanoInterface Facility, Department of Mechanical and Industrial Engineering, Ryerson University, 350 Victoria Street, Toronto, ON, Canada M5B 2K3
- Nanocharacterization Laboratory, Department of Aerospace Engineering, Ryerson University, 350 Victoria Street, Toronto, ON, Canada M5B 2K3
- Department of Biomedical Engineering, Ryerson University, 350 Victoria Street, Toronto, ON, Canada M5B 2K3
| | - Sivaprasad Chinnakkannu Vijayakumar
- Institute for Biomedical Engineering, Science and Technology (iBEST), Li Ka-Shing Knowledge Institute, 209 Victoria Street, Toronto, ON, Canada M5B 1T8
- Ultrashort Laser Nanomanufacturing Research Facility, Department of Mechanical and Industrial Engineering, Ryerson University, 350 Victoria Street, Toronto, ON, Canada M5B 2K3
- BioNanoInterface Facility, Department of Mechanical and Industrial Engineering, Ryerson University, 350 Victoria Street, Toronto, ON, Canada M5B 2K3
- Nanocharacterization Laboratory, Department of Aerospace Engineering, Ryerson University, 350 Victoria Street, Toronto, ON, Canada M5B 2K3
| | - Krishnan Venkatakrishnan
- Keenan Research Center for Biomedical Science, St. Michael's Hospital, 30 Bond Street, Toronto, ON, Canada M5B 1W8
- Ultrashort Laser Nanomanufacturing Research Facility, Department of Mechanical and Industrial Engineering, Ryerson University, 350 Victoria Street, Toronto, ON, Canada M5B 2K3
- BioNanoInterface Facility, Department of Mechanical and Industrial Engineering, Ryerson University, 350 Victoria Street, Toronto, ON, Canada M5B 2K3
- Nanocharacterization Laboratory, Department of Aerospace Engineering, Ryerson University, 350 Victoria Street, Toronto, ON, Canada M5B 2K3
| | - Bo Tan
- Keenan Research Center for Biomedical Science, St. Michael's Hospital, 30 Bond Street, Toronto, ON, Canada M5B 1W8
- Nanocharacterization Laboratory, Department of Aerospace Engineering, Ryerson University, 350 Victoria Street, Toronto, ON, Canada M5B 2K3
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Ragheb I, Braïk M, Lau-Truong S, Belkhir A, Rumyantseva A, Kostcheev S, Adam PM, Chevillot-Biraud A, Lévi G, Aubard J, Boubekeur-Lecaque L, Félidj N. Surface Enhanced Raman Scattering on Regular Arrays of Gold Nanostructures: Impact of Long-Range Interactions and the Surrounding Medium. Nanomaterials (Basel) 2020; 10:E2201. [PMID: 33158228 DOI: 10.3390/nano10112201] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 10/27/2020] [Accepted: 10/30/2020] [Indexed: 12/31/2022]
Abstract
Long-range interaction in regular metallic nanostructure arrays can provide the possibility to manipulate their optical properties, governed by the excitation of localized surface plasmon (LSP) resonances. When assembling the nanoparticles in an array, interactions between nanoparticles can result in a strong electromagnetic coupling for specific grating constants. Such a grating effect leads to narrow LSP peaks due to the emergence of new radiative orders in the plane of the substrate, and thus, an important improvement of the intensity of the local electric field. In this work, we report on the optical study of LSP modes supported by square arrays of gold nanodiscs deposited on an indium tin oxyde (ITO) coated glass substrate, and its impact on the surface enhanced Raman scattering (SERS) of a molecular adsorbate, the mercapto benzoic acid (4-MBA). We estimated the Raman gain of these molecules, by varying the grating constant and the refractive index of the surrounding medium of the superstrate, from an asymmetric medium (air) to a symmetric one (oil). We show that the Raman gain can be improved with one order of magnitude in a symmetric medium compared to SERS experiments in air, by considering the appropriate grating constant. Our experimental results are supported by FDTD calculations, and confirm the importance of the grating effect in the design of SERS substrates.
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Ju J, Hsieh CM, Tian Y, Kang J, Chia R, Chang H, Bai Y, Xu C, Wang X, Liu Q. Surface Enhanced Raman Spectroscopy Based Biosensor with a Microneedle Array for Minimally Invasive In Vivo Glucose Measurements. ACS Sens 2020; 5:1777-1785. [PMID: 32426978 DOI: 10.1021/acssensors.0c00444] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
To monitor blood glucose levels reliably, diabetic patients usually have to undergo frequent fingerstick tests to draw out fresh blood, which is painful and inconvenient with the potential risk of cross contamination especially when the lancet is reused or not properly sterilized. This work reports a novel surface-enhanced Raman spectroscopy (SERS) sensor for the in situ intradermal detection of glucose based on a low-cost poly(methyl methacrylate) microneedle (PMMA MN) array. After incorporating 1-decanethiol (1-DT) onto the silver-coated array surface, the sensor was calibrated in the range of 0-20 mM in skin phantoms then tested for the in vivo quantification of glucose in a mouse model of streptozocin (STZ)-induced type I diabetes. The results showed that the functional poly(methyl methacrylate) microneedle (F-PMMA MN) array was able to directly measure glucose in the interstitial fluid (ISF) in a few minutes and retain its structural integrity without swelling. The Clarke error grid analysis of measured data indicated that 93% of the data points lie in zones A and B. Moreover, the MN array exhibited minimal invasiveness to the skin as the skin recovered well without any noticeable adverse reaction in 10 min after measurements. With further improvement and proper validation, this polymeric MN array-based SERS biosensor has the potential to be used in painless glucose monitoring of diabetic patients in the future.
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Affiliation(s)
- Jian Ju
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore
- Department of Chemistry, Oakland University, Rochester, Michigan 48309, United State
| | - Chao-Mao Hsieh
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore
| | - Yao Tian
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore
- Apple South Asia Pte Ltd., 7 Ang Mo Kio Street 64, Singapore 569086, Singapore
| | - Jian Kang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore
| | - Ruining Chia
- Lee Kong Chian School of Medicine, Nanyang Technological University, 59 Nanyang Drive, Singapore 636921, Singapore
| | - Hao Chang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore
| | - Yanru Bai
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore
| | - Chenjie Xu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore
- Department of Biomedical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR
| | - Xiaomeng Wang
- Lee Kong Chian School of Medicine, Nanyang Technological University, 59 Nanyang Drive, Singapore 636921, Singapore
- Institute of Molecular and Cell Biology, Agency for Science Technology & Research, 61 Biopolis Drive, Proteos, Singapore 138673
- Institute of Ophthalmology, University College London, London EC1V 9EL, United Kingdom
- Singapore Eye Research Institute, The Academia, 20 College Road Discovery Tower Level 6, Singapore 169856
| | - Quan Liu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457, Singapore
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21
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Toyouchi S, Wolf M, Nakao Y, Fujita Y, Inose T, Fortuni B, Hirai K, Hofkens J, De Feyter S, Hutchison J, Uji-I H. Controlled Fabrication of Optical Signal Input/Output Sites on Plasmonic Nanowires. Nano Lett 2020; 20:2460-2467. [PMID: 32155085 DOI: 10.1021/acs.nanolett.9b05199] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Silver nanowires have attracted considerable attention as subdiffraction limited diameter waveguides in a variety of applications including cell endoscopy and photonic integrated circuitry. Optical signal transport occurs by coupling light into propagating surface plasmons, which scatter back into light further along the wire. However, these interconversions only occur efficiently at wire ends, or at defects along the wire, which are not controlled during synthesis. Here, we overcome this limitation, demonstrating the visible laser light-induced fabrication of gold nanostructures at desired positions on silver nanowires, and their utility as efficient in/out coupling points for light. The gold nanostructures grow via plasmon-induced reduction of Au(III) and are shown to be excellent "hotspots" for surface-enhanced Raman scattering.
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Affiliation(s)
- Shuichi Toyouchi
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Mathias Wolf
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Yusuke Nakao
- Research Institute for Electronic Science (RIES), Hokkaido University, N20W10, Kita ward, Sapporo 001-0020, Hokkaido, Japan
- Division of Information Science and Technology, Graduate School of Information Science and Technology, Hokkaido University, N14W9, Kita ward, Sapporo 060-0814, Hokkaido, Japan
| | - Yasuhiko Fujita
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
- Toray Research Center, Inc., Sonoyama 3-3-7, Otsu 520-8567, Shiga, Japan
| | - Tomoko Inose
- Research Institute for Electronic Science (RIES), Hokkaido University, N20W10, Kita ward, Sapporo 001-0020, Hokkaido, Japan
- Division of Information Science and Technology, Graduate School of Information Science and Technology, Hokkaido University, N14W9, Kita ward, Sapporo 060-0814, Hokkaido, Japan
| | - Beatrice Fortuni
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Kenji Hirai
- Research Institute for Electronic Science (RIES), Hokkaido University, N20W10, Kita ward, Sapporo 001-0020, Hokkaido, Japan
- Division of Information Science and Technology, Graduate School of Information Science and Technology, Hokkaido University, N14W9, Kita ward, Sapporo 060-0814, Hokkaido, Japan
| | - Johan Hofkens
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
- Max Plank Institute for Polymer Research, Mainz D-55128, Germany
| | - Steven De Feyter
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - James Hutchison
- School of Chemistry, The University of Melbourne, Parkville 3010 Victoria, Australia
| | - Hiroshi Uji-I
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
- Research Institute for Electronic Science (RIES), Hokkaido University, N20W10, Kita ward, Sapporo 001-0020, Hokkaido, Japan
- Division of Information Science and Technology, Graduate School of Information Science and Technology, Hokkaido University, N14W9, Kita ward, Sapporo 060-0814, Hokkaido, Japan
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Pirzada M, Altintas Z. Recent Progress in Optical Sensors for Biomedical Diagnostics. Micromachines (Basel) 2020; 11:E356. [PMID: 32235546 PMCID: PMC7231100 DOI: 10.3390/mi11040356] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 03/25/2020] [Accepted: 03/28/2020] [Indexed: 12/12/2022]
Abstract
In recent years, several types of optical sensors have been probed for their aptitude in healthcare biosensing, making their applications in biomedical diagnostics a rapidly evolving subject. Optical sensors show versatility amongst different receptor types and even permit the integration of different detection mechanisms. Such conjugated sensing platforms facilitate the exploitation of their neoteric synergistic characteristics for sensor fabrication. This paper covers nearly 250 research articles since 2016 representing the emerging interest in rapid, reproducible and ultrasensitive assays in clinical analysis. Therefore, we present an elaborate review of biomedical diagnostics with the help of optical sensors working on varied principles such as surface plasmon resonance, localised surface plasmon resonance, evanescent wave fluorescence, bioluminescence and several others. These sensors are capable of investigating toxins, proteins, pathogens, disease biomarkers and whole cells in varied sensing media ranging from water to buffer to more complex environments such as serum, blood or urine. Hence, the recent trends discussed in this review hold enormous potential for the widespread use of optical sensors in early-stage disease prediction and point-of-care testing devices.
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Affiliation(s)
| | - Zeynep Altintas
- Institute of Chemistry, Technical University of Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany;
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23
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Mandrile L, Giovannozzi AM, Sacco A, Martra G, Rossi AM. Flexible and Transparent Substrates Based on Gold Nanoparticles and TiO 2 for in Situ Bioanalysis by Surface-Enhanced Raman Spectroscopy. Biosensors (Basel) 2019; 9:E145. [PMID: 31861199 PMCID: PMC6955768 DOI: 10.3390/bios9040145] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 12/06/2019] [Accepted: 12/13/2019] [Indexed: 11/28/2022]
Abstract
Flexible and transparent substrates are emerging as low cost and easy-to-operate support for surface-enhanced Raman spectroscopy (SERS). In particular, in situ SERS detection approach for surface characterization in transmission modality can be efficiently employed for non-invasive analysis of non-planar surfaces. Here we propose a new methodology to fabricate a homogenous, transparent, and flexible SERS membrane by the assistance of a thin TiO2 porous layer deposited on the PDMS surface, which supports the uniform loading of gold nanoparticles over large area. The substrate was first characterized for homogeneity, sensitivity and repeatability using a model molecule for SERS, i.e., 7-mercapto-4-methylcoumarin. Satisfactory intra-substrate uniformity and inter-substrates repeatability was achieved, showing an RSD of 10%, and an analytical sensitivity down to 10 nM was determined with an EF of 3.4 × 105 ± 0.4 × 105. Furthermore, SERS detection of pyrimethanil (PMT), a commonly employed pesticide in crops for human consumption, was performed in situ, exploiting the optical transparency of the device, using both model surfaces and non-flat bio-samples. PMT contamination at the phytochemical concentration levels corresponding to commonly used infield doses was successfully detected on the surface of the yellow Ficus benjiamina leaves, supporting the use of this substrate for food safety in-field application.
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Affiliation(s)
- Luisa Mandrile
- Physical Chemistry and Nanotechnologies Group, National Institute of Metrological Research, Strada delle Cacce 91, 10135 Turin, Italy; (L.M.); (A.M.G.); (A.S.); (G.M.)
| | - Andrea Mario Giovannozzi
- Physical Chemistry and Nanotechnologies Group, National Institute of Metrological Research, Strada delle Cacce 91, 10135 Turin, Italy; (L.M.); (A.M.G.); (A.S.); (G.M.)
| | - Alessio Sacco
- Physical Chemistry and Nanotechnologies Group, National Institute of Metrological Research, Strada delle Cacce 91, 10135 Turin, Italy; (L.M.); (A.M.G.); (A.S.); (G.M.)
| | - Gianmario Martra
- Physical Chemistry and Nanotechnologies Group, National Institute of Metrological Research, Strada delle Cacce 91, 10135 Turin, Italy; (L.M.); (A.M.G.); (A.S.); (G.M.)
- Department of Chemistry and Interdepartmental Centre NIS, University of Turin, Via Giuria 7, 10125 Turin, Italy
| | - Andrea Mario Rossi
- Physical Chemistry and Nanotechnologies Group, National Institute of Metrological Research, Strada delle Cacce 91, 10135 Turin, Italy; (L.M.); (A.M.G.); (A.S.); (G.M.)
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24
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Xie H, Li P, Shao J, Huang H, Chen Y, Jiang Z, Chu PK, Yu XF. Electrostatic Self-Assembly of Ti 3C 2T x MXene and Gold Nanorods as an Efficient Surface-Enhanced Raman Scattering Platform for Reliable and High-Sensitivity Determination of Organic Pollutants. ACS Sens 2019; 4:2303-2310. [PMID: 31385492 DOI: 10.1021/acssensors.9b00778] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A reliable surface-enhanced Raman scattering (SERS) substrate composed of two-dimensional (2D) MXene (Ti3C2Tx) nanosheets and gold nanorods (AuNRs) is designed and fabricated for sensitive detection of organic pollutants. The AuNRs are uniformly distributed on the surface of the 2D MXene nanosheets because of the strong electrostatic interactions, forming abundant SERS hot spots. The MXene/AuNR SERS substrate exhibits high sensitivity and excellent reproducibility in the determination of common organic dyes such as rhodamine 6G, crystal violet, and malachite green. The detection limits are 1 × 10-12, 1 × 10-12, and 1 × 10-10 M, and relative standard deviations determined from 13 areas on each sample are 18.1, 10.1, and 15.6%, respectively. In the determination of more complex organic pesticides and pollutants, the substrate also shows excellent sensitivity and quantitative detection, and the detection limits for thiram and diquat of 1 × 10-10 and 1 × 10-8 M, respectively, are much lower than the contaminant levels stipulated by the US Environmental Protection Agency. The MXene/AuNR composite constitutes an efficient SERS platform for reliable and high-sensitivity environmental analysis and food safety monitoring.
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Affiliation(s)
- Hanhan Xie
- Department of Medical Laboratory, The Second Clinical Medical College (Shenzhen People’s Hospital) of Jinan University, Shenzhen 518020, China
- Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Guangzhou 510632, China
| | - Penghui Li
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Jundong Shao
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Hao Huang
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Yue Chen
- Department of Medical Laboratory, The Second Clinical Medical College (Shenzhen People’s Hospital) of Jinan University, Shenzhen 518020, China
| | - Zhenyou Jiang
- Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Guangzhou 510632, China
| | - Paul K. Chu
- Department of Physics and Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China
| | - Xue-Feng Yu
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
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25
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Kim J, Jang Y, Kim NJ, Kim H, Yi GC, Shin Y, Kim MH, Yoon S. Study of Chemical Enhancement Mechanism in Non-plasmonic Surface Enhanced Raman Spectroscopy (SERS). Front Chem 2019; 7:582. [PMID: 31482089 PMCID: PMC6710363 DOI: 10.3389/fchem.2019.00582] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 08/02/2019] [Indexed: 12/02/2022] Open
Abstract
Surface enhanced Raman spectroscopy (SERS) has been intensively investigated during the past decades for its enormous electromagnetic field enhancement near the nanoscale metallic surfaces. Chemical enhancement of SERS, however, remains rather elusive despite intensive research efforts, mainly due to the relatively complex enhancing factors and inconsistent experimental results. To study details of chemical enhancement mechanism, we prepared various low dimensional semiconductor substrates such as ZnO and GaN that were fabricated via metal organic chemical vapor deposition process. We used three kinds of molecules (4-MPY, 4-MBA, 4-ATP) as analytes to measure SERS spectra under non-plasmonic conditions to understand charge transfer mechanisms between a substrate and analyte molecules leading to chemical enhancement. We observed that there is a preferential route for charge transfer responsible for chemical enhancement, that is, there exists a dominant enhancement process in non-plasmonic SERS. To further confirm our idea of charge transfer mechanism, we used a combination of 2-dimensional transition metal dichalcogenide substrates and analyte molecules. We also observed significant enhancement of Raman signal from molecules adsorbed on 2-dimensional transition metal dichalcogenide surface that is completely consistent with our previous results. We also discuss crucial factors for increasing enhancement factors for chemical enhancement without involving plasmonic resonance.
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Affiliation(s)
- Jayeong Kim
- Department of Physics, Ewha Womans University, Seoul, South Korea
| | - Yujin Jang
- Department of Physics, Ewha Womans University, Seoul, South Korea
| | - Nam-Jung Kim
- Department of Physics and Astronomy, Institute of Applied Physics, Research Institute of Advanced Materials, Seoul National University, Seoul, South Korea
| | - Heehun Kim
- Department of Physics and Astronomy, Institute of Applied Physics, Research Institute of Advanced Materials, Seoul National University, Seoul, South Korea
| | - Gyu-Chul Yi
- Department of Physics and Astronomy, Institute of Applied Physics, Research Institute of Advanced Materials, Seoul National University, Seoul, South Korea
| | - Yukyung Shin
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, South Korea
| | - Myung Hwa Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, South Korea
| | - Seokhyun Yoon
- Department of Physics, Ewha Womans University, Seoul, South Korea
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26
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Zhang P, Wang L, Fang Y, Zheng D, Lin T, Wang H. Label-Free Exosomal Detection and Classification in Rapid Discriminating Different Cancer Types Based on Specific Raman Phenotypes and Multivariate Statistical Analysis. Molecules 2019; 24:molecules24162947. [PMID: 31416240 PMCID: PMC6720265 DOI: 10.3390/molecules24162947] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 08/08/2019] [Accepted: 08/12/2019] [Indexed: 01/04/2023] Open
Abstract
Exosomes contain different functional bimolecular characteristics related to physiological or pathological processes and are now recognized as new biomarkers in different human cancers. Rapid detection and classification of cancer-related exosomes might be helpful in the rapid screening of patients that may have cancer. Here, we report a surface enhanced Raman scattering technology for rapid and label-free exosomal detection (Exo-SERS) to aid in the discrimination of different cancer cells based on specific Raman phenotypes and multivariate statistical analysis. The results demonstrated that exosomes derived from both tumor cells and normal cells exhibit special, unique Raman phenotypes. Using the Exo-SERS method, the cancer cells were accurately discriminated from normal cells, and subtle molecular changes between the different cell types could be detected with high sensitive. This research provides a rapid, label-free and non-destructive manner for detecting and discriminating between cancer types.
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Affiliation(s)
- Ping Zhang
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China.
| | - Limin Wang
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China
| | - Yaping Fang
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China
| | - Dawei Zheng
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China.
| | - Taifeng Lin
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China
| | - Huiqin Wang
- College of Life Science and Bioengineering, Beijing University of Technology, Beijing 100124, China
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27
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Song X, Wang Y, Zhao F, Li Q, Ta HQ, Rümmeli MH, Tully CG, Li Z, Yin WJ, Yang L, Lee KB, Yang J, Bozkurt I, Liu S, Zhang W, Chhowalla M. Plasmon-Free Surface-Enhanced Raman Spectroscopy Using Metallic 2D Materials. ACS Nano 2019; 13:8312-8319. [PMID: 31284713 DOI: 10.1021/acsnano.9b03761] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Two dimensional (2D) materials-based plasmon-free surface-enhanced Raman scattering (SERS) is an emerging field in nondestructive analysis. However, impeded by the low density of state (DOS), an inferior detection sensitivity is frequently encountered due to the low enhancement factor of most 2D materials. Metallic transition-metal dichalcogenides (TMDs) could be ideal plasmon-free SERS substrates because of their abundant DOS near the Fermi level. However, the absence of controllable synthesis of metallic 2D TMDs has hindered their study as SERS substrates. Here, we realize controllable synthesis of ultrathin metallic 2D niobium disulfide (NbS2) (<2.5 nm) with large domain size (>160 μm). We have explored the SERS performance of as-obtained NbS2, which shows a detection limit down to 10-14 mol·L-1. The enhancement mechanism was studied in depth by density functional theory, which suggested a strong correlation between the SERS performance and DOS near the Fermi level. NbS2 features the most abundant DOS and strongest binding energy with probe molecules as compared with other 2D materials such as graphene, 1T-phase MoS2, and 2H-phase MoS2. The large DOS increases the intermolecular charge transfer probability and thus induces prominent Raman enhancement. To extend the results to practical applications, the resulting NbS2-based plasmon-free SERS substrates were applied for distinguishing different types of red wines.
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Affiliation(s)
- Xiuju Song
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education , Shenzhen University , Shenzhen 518060 , P.R. China
- Materials Science and Engineering , Rutgers University , 607 Taylor Road , Piscataway , New Jersey 08854 , United States
| | - Yan Wang
- Materials Science and Engineering , Rutgers University , 607 Taylor Road , Piscataway , New Jersey 08854 , United States
- Materials Science and Metallurgy , University of Cambridge , Cambridge CB3 0FS , U.K
| | - Fang Zhao
- Department of Physics , Princeton University , Jadwin Hall , Princeton , New Jersey 08544 , United States
| | - Qiucheng Li
- Soochow Institute for Energy and Materials InnovationS (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies , Soochow University , Suzhou 215006 , P.R. China
| | - Huy Quang Ta
- IFW Dresden , Helmholtz Strasse 20 , Dresden 01069 , Germany
| | - Mark H Rümmeli
- Soochow Institute for Energy and Materials InnovationS (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies , Soochow University , Suzhou 215006 , P.R. China
- IFW Dresden , Helmholtz Strasse 20 , Dresden 01069 , Germany
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences , M. Curie-Sklodowskiej 34 , Zabrze 41-819 , Poland
| | - Christopher G Tully
- Department of Physics , Princeton University , Jadwin Hall , Princeton , New Jersey 08544 , United States
| | - Zhenzhu Li
- Soochow Institute for Energy and Materials InnovationS (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies , Soochow University , Suzhou 215006 , P.R. China
| | - Wan-Jian Yin
- Soochow Institute for Energy and Materials InnovationS (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies , Soochow University , Suzhou 215006 , P.R. China
| | - Letao Yang
- Department of Chemistry and Chemical Biology , Rutgers, The State University of New Jersey , 123 Bevier Road , Piscataway , New Jersey 08854 , United States
| | - Ki-Bum Lee
- Department of Chemistry and Chemical Biology , Rutgers, The State University of New Jersey , 123 Bevier Road , Piscataway , New Jersey 08854 , United States
| | - Jieun Yang
- Materials Science and Engineering , Rutgers University , 607 Taylor Road , Piscataway , New Jersey 08854 , United States
- Materials Science and Metallurgy , University of Cambridge , Cambridge CB3 0FS , U.K
| | - Ibrahim Bozkurt
- Materials Science and Engineering , Rutgers University , 607 Taylor Road , Piscataway , New Jersey 08854 , United States
| | - Shengwen Liu
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education , Shenzhen University , Shenzhen 518060 , P.R. China
- Materials Science and Engineering , Rutgers University , 607 Taylor Road , Piscataway , New Jersey 08854 , United States
| | - Wenjing Zhang
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education , Shenzhen University , Shenzhen 518060 , P.R. China
| | - Manish Chhowalla
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education , Shenzhen University , Shenzhen 518060 , P.R. China
- Materials Science and Engineering , Rutgers University , 607 Taylor Road , Piscataway , New Jersey 08854 , United States
- Materials Science and Metallurgy , University of Cambridge , Cambridge CB3 0FS , U.K
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28
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Chundayil Madathil G, Iyer S, Thankappan K, Gowd GS, Nair S, Koyakutty M. A Novel Surface Enhanced Raman Catheter for Rapid Detection, Classification, and Grading of Oral Cancer. Adv Healthc Mater 2019; 8:e1801557. [PMID: 31081261 DOI: 10.1002/adhm.201801557] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 04/05/2019] [Indexed: 11/12/2022]
Abstract
Fabrication and testing of a novel nanostructured surface-enhanced Raman catheter device is reported for rapid detection, classification, and grading of normal, premalignant, and malignant tissues with high sensitivity and accuracy. The sensor part of catheter is formed by a surface-enhanced Raman scattering (SERS) substrate made up of leaf-like TiO2 nanostructures decorated with 30 nm sized Ag nanoparticles. The device is tested using a total of 37 patient samples wherein SERS signatures of oral tissues consisting of malignant oral squamous cell carcinoma (OSCC), verrucous carcinoma, premalignant leukoplakia, and disease-free conditions are detected and classified with an accuracy of 97.24% within a short detection-cum-processing time of nearly 25-30 min per patient. Neoplastic grade changes detected using this device correlate strongly with conventional pathological data, enabling correct classification of tumors into three grades with an accuracy of 97.84% in OSCC. Thus, the potential of a SERS catheter device as a point-of-care pathological tool is shown for the rapid and accurate detection, classification, and grading of solid tumors.
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Affiliation(s)
- Girish Chundayil Madathil
- Amrita Centre for Nanosciences & Molecular MedicineAmrita Vishwavidyapeetham University Cochin 682 041 India
| | - Subramania Iyer
- Department of Head and Neck OncologyAmrita Institute of Medical Sciences Cochin 682 041 India
| | - Krishnakumar Thankappan
- Department of Head and Neck OncologyAmrita Institute of Medical Sciences Cochin 682 041 India
| | - G. Siddaramana Gowd
- Amrita Centre for Nanosciences & Molecular MedicineAmrita Vishwavidyapeetham University Cochin 682 041 India
| | - Shantikumar Nair
- Amrita Centre for Nanosciences & Molecular MedicineAmrita Vishwavidyapeetham University Cochin 682 041 India
| | - Manzoor Koyakutty
- Amrita Centre for Nanosciences & Molecular MedicineAmrita Vishwavidyapeetham University Cochin 682 041 India
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29
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Zhang N, Ye S, Wang Z, Li R, Wang M. A Dual-Signal Twinkling Probe for Fluorescence-SERS Dual Spectrum Imaging and Detection of miRNA in Single Living Cell via Absolute Value Coupling of Reciprocal Signals. ACS Sens 2019; 4:924-930. [PMID: 30924337 DOI: 10.1021/acssensors.9b00031] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Imaging and detecting microRNAs (miRNAs) is of central importance in tumor cell analysis. It stays challenging to establish simple, accurate, and sensitive analytical assays for imaging and detection of miRNA in a single living cell, because of intracellular complex environment and miRNA sequence similarity. Herein, we designed a dual-signal twinkling probe (DSTP) with triplex-stem structure which employed a fluorescence-SERS signal reciprocal switch. The spatiotemporal dynamics of the miRNA molecular and intracellular uptake of the probe are monitored by fluorescence-SERS signal switch of the DSTP. Meanwhile, using the surface-enhanced Raman scattering (SERS) signals of DSTP, the measure of absolute value coupling of reciprocal signals is first used to real-time detection of miRNA. Through simultaneous enhancing the target response signal value and reducing blank value, this work deducted the background effect, and showed high sensitivity and reproducibility. Moreover, the probe shows excellent reversibility and specificity in real quantitative detection of intracellular miRNA. miR-203 was successfully monitored in MCF-7, in accord with the results in vitro as well as in cell lysates. We anticipate that this new dual-signal twinkling and dual-spectrum switch method will be generally useful to image and detect various types of biomolecules in single living cell.
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Affiliation(s)
- Na Zhang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; State Key Laboratory Base for Eco-chemical Engineering; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering. Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Sujuan Ye
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; State Key Laboratory Base for Eco-chemical Engineering; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering. Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Zhenxing Wang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; State Key Laboratory Base for Eco-chemical Engineering; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering. Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Ronghua Li
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; State Key Laboratory Base for Eco-chemical Engineering; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering. Qingdao University of Science and Technology, Qingdao 266042, PR China
| | - Menglei Wang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; State Key Laboratory Base for Eco-chemical Engineering; Shandong Key Laboratory of Biochemical Analysis; Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong; College of Chemistry and Molecular Engineering. Qingdao University of Science and Technology, Qingdao 266042, PR China
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30
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Takenaka M, Hashimoto Y, Iwasa T, Taketsugu T, Seniutinas G, Balčytis A, Juodkazis S, Nishijima Y. First Principles Calculations Toward Understanding SERS of 2,2'-Bipyridyl Adsorbed on Au, Ag, and Au-Ag Nanoalloy. J Comput Chem 2019; 40:925-932. [PMID: 30368857 DOI: 10.1002/jcc.25603] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Revised: 08/08/2018] [Accepted: 08/31/2018] [Indexed: 12/17/2022]
Abstract
First principles electrodyanmics and quantum chemical simulations are performed to gain insights into the underlying mechanisms of the surface enhanced Raman spectra of 22BPY adsorbed on pure Au and Ag as well as on Au-Ag alloy nanodiscs. Experimental SERS spectra from Au and Ag nanodiscs show similar peaks, whereas those from Au-Ag alloy reveal new spectral features. The physical enhancement factors due to surface nano-texture were considered by numerical FDTD simulations of light intensity distribution for the nano-textured Au, Ag, and Au-Ag alloy and compared with experimental results. For the chemical insights of the enhancement, the DFT calculations with the dispersion interaction were performed using Au20 , Ag20 , and Au10 Ag10 clusters of a pyramidal structure for SERS modeling. Binding of 22BPY to the clusters was simulated by considering possible arrangements of vertex and planar physical as well as chemical adsorption models. The DFT results indicate that 22BPY prefers a coplanar adsorption on a (111) face with trans-conformation having close energy difference to cis-conformation. Binding to pure Au cluster is stronger than to pure Ag or Au-Ag alloy clusters and adsorption onto the alloy surface can deform the surface. The computed Raman spectra are compared with experimental data and assignments for pure Au and Ag models are well matching, indicating the need of dispersion interaction to reproduce strong Raman signal at around 800 cm-1 . This work provides insight into 3D character of SERS on nanorough surfaces due to different binding energies and bond length of nanoalloys. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Masato Takenaka
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Japan
| | - Yoshikazu Hashimoto
- Department of Electrical and Computer Engineering, Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
| | - Takeshi Iwasa
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Japan.,Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Japan.,Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyoto 615-8245
| | - Tetsuya Taketsugu
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Japan.,Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Japan.,Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyoto 615-8245
| | - Gediminas Seniutinas
- Centre for Micro-Photonics, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, Victoria, 3122, Australia.,Melbourne Centre for Nanofabrication (MCN), Australian National Fabrication Facility, Clayton, Victoria, 3168, Australia
| | - Armandas Balčytis
- Centre for Micro-Photonics, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, Victoria, 3122, Australia.,Melbourne Centre for Nanofabrication (MCN), Australian National Fabrication Facility, Clayton, Victoria, 3168, Australia
| | - Saulius Juodkazis
- Centre for Micro-Photonics, Faculty of Engineering and Industrial Sciences, Swinburne University of Technology, Hawthorn, Victoria, 3122, Australia.,Melbourne Centre for Nanofabrication (MCN), Australian National Fabrication Facility, Clayton, Victoria, 3168, Australia
| | - Yoshiaki Nishijima
- Department of Electrical and Computer Engineering, Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan
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31
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Zavatski S, Khinevich N, Girel K, Redko S, Kovalchuk N, Komissarov I, Lukashevich V, Semak I, Mamatkulov K, Vorobyeva M, Arzumanyan G, Bandarenka H. Surface Enhanced Raman Spectroscopy of Lactoferrin Adsorbed on Silvered Porous Silicon Covered with Graphene. Biosensors (Basel) 2019; 9:E34. [PMID: 30823455 PMCID: PMC6468514 DOI: 10.3390/bios9010034] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/17/2019] [Accepted: 02/20/2019] [Indexed: 12/16/2022]
Abstract
We registered surface enhanced Raman scattering (SERS) spectra of the human lactoferrin molecules adsorbed on a silvered porous silicon (por-Si) from 10-6⁻10-18 M solutions. It was found that the por-Si template causes a negative surface potential of silver particles and their chemical resistivity to oxidation. These properties provided to attract positively charged lactoferrin molecules and prevent their interaction with metallic particles upon 473 nm laser excitation. The SERS spectra of lactoferrin adsorbed from 10-6 M solution were rather weak but a decrease of the concentration to 10-10 M led to an enormous growth of the SERS signal. This effect took place as oligomers of lactoferrin were broken down to monomeric units while its concentration was reduced. Oligomers are too large for a uniform overlap with electromagnetic field from silver particles. They cannot provide an intensive SERS signal from the top part of the molecules in contrast to monomers that can be completely covered by the electromagnetic field. The SERS spectra of lactoferrin at the 10-14 and 10-16 M concentrations were less intensive and started to change due to increasing contribution from the laser burned molecules. To prevent overheating the analyte molecules on the silvered por-Si were protected with graphene, which allowed the detection of lactoferrin adsorbed from the 10-18 M solution.
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Affiliation(s)
- Sergey Zavatski
- Laboratory of Applied Plasmonics, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, Belarus.
| | - Nadia Khinevich
- Laboratory of Applied Plasmonics, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, Belarus.
| | - Kseniya Girel
- Laboratory of Applied Plasmonics, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, Belarus.
| | - Sergey Redko
- Laboratory of Materials and Structures of Nanoelectronics, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, Belarus.
| | - Nikolai Kovalchuk
- Laboratory of Integrated Micro- and Nanosystems, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, Belarus.
| | - Ivan Komissarov
- Laboratory of Integrated Micro- and Nanosystems, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, Belarus.
| | - Vladimir Lukashevich
- Laboratory of Nutrition and Sports Physiology, Institute of Physiology of the National Academy of Sciences of Belarus, 220072 Minsk, Belarus.
| | - Igor Semak
- Department of Biochemistry, Belarusian State University, 220030 Minsk, Belarus.
| | - Kahramon Mamatkulov
- Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia.
| | - Maria Vorobyeva
- Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia.
| | - Grigory Arzumanyan
- Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia.
- Dubna State University, 141982 Dubna, Russia.
| | - Hanna Bandarenka
- Laboratory of Applied Plasmonics, Belarusian State University of Informatics and Radioelectronics, 220013 Minsk, Belarus.
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Caro C, Quaresma P, Pereira E, Franco J, Pernia Leal M, García-Martín ML, Royo JL, Oliva-Montero JM, Merkling PJ, Zaderenko AP, Pozo D, Franco R. Synthesis and Characterization of Elongated-Shaped Silver Nanoparticles as a Biocompatible Anisotropic SERS Probe for Intracellular Imaging: Theoretical Modeling and Experimental Verification. Nanomaterials (Basel) 2019; 9:nano9020256. [PMID: 30781838 PMCID: PMC6409692 DOI: 10.3390/nano9020256] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 02/01/2019] [Accepted: 02/09/2019] [Indexed: 01/07/2023]
Abstract
Progress in the field of biocompatible SERS nanoparticles has promising prospects for biomedical applications. In this work, we have developed a biocompatible Raman probe by combining anisotropic silver nanoparticles with the dye rhodamine 6G followed by subsequent coating with bovine serum albumin. This nanosystem presents strong SERS capabilities in the near infrared (NIR) with a very high (2.7 × 107) analytical enhancement factor. Theoretical calculations reveal the effects of the electromagnetic and chemical mechanisms in the observed SERS effect for this nanosystem. Finite element method (FEM) calculations showed a considerable near field enhancement in NIR. Using density functional quantum chemical calculations, the chemical enhancement mechanism of rhodamine 6G by interaction with the nanoparticles was probed, allowing us to calculate spectra that closely reproduce the experimental results. The nanosystem was tested in cell culture experiments, showing cell internalization and also proving to be completely biocompatible, as no cell death was observed. Using a NIR laser, SERS signals could be detected even from inside cells, proving the applicability of this nanosystem as a biocompatible SERS probe.
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Affiliation(s)
- Carlos Caro
- Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, Carretera de Utrera Km 1, 41013 Seville, Spain.
- Departamento de Química, UCIBIO, REQUIMTE, Faculdade de Ciências, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal.
- CABIMER, Andalusian Center for Molecular Biology and Regenerative Medicine, Av. Americo Vespucio, 24, 41092 Sevilla, Spain.
- BIONAND, Andalusian Centre for Nanomedicine and Biotechnology, Junta de Andalucía, Universidad de Málaga, 29590 Málaga, Spain.
| | - Pedro Quaresma
- Departamento de Química e Bioquímica, LAQV-REQUIMTE, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal.
| | - Eulália Pereira
- Departamento de Química e Bioquímica, LAQV-REQUIMTE, Faculdade de Ciências, Universidade do Porto, 4169-007 Porto, Portugal.
| | - Jaime Franco
- CABIMER, Andalusian Center for Molecular Biology and Regenerative Medicine, Av. Americo Vespucio, 24, 41092 Sevilla, Spain.
- Department of Medical Biochemistry, Molecular Biology and Immunology, Universidad de Sevilla, Av. Sanchez Pizjuan, 4, 41009 Sevilla, Spain.
| | - Manuel Pernia Leal
- BIONAND, Andalusian Centre for Nanomedicine and Biotechnology, Junta de Andalucía, Universidad de Málaga, 29590 Málaga, Spain.
- Department of Organic and Pharmaceutical Chemistry, Universidad de Sevilla, 41012 Seville, Spain.
| | - Maria Luisa García-Martín
- BIONAND, Andalusian Centre for Nanomedicine and Biotechnology, Junta de Andalucía, Universidad de Málaga, 29590 Málaga, Spain.
| | - Jose Luis Royo
- Department of Biochemistry, Molecular Biology and Immunology, Universidad de Málaga, 29071 Málaga, Spain.
| | - Jose Maria Oliva-Montero
- Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, Carretera de Utrera Km 1, 41013 Seville, Spain.
| | - Patrick Jacques Merkling
- Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, Carretera de Utrera Km 1, 41013 Seville, Spain.
| | - Ana Paula Zaderenko
- Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, Carretera de Utrera Km 1, 41013 Seville, Spain.
| | - David Pozo
- CABIMER, Andalusian Center for Molecular Biology and Regenerative Medicine, Av. Americo Vespucio, 24, 41092 Sevilla, Spain.
- Department of Medical Biochemistry, Molecular Biology and Immunology, Universidad de Sevilla, Av. Sanchez Pizjuan, 4, 41009 Sevilla, Spain.
| | - Ricardo Franco
- Departamento de Química, UCIBIO, REQUIMTE, Faculdade de Ciências, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal.
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Feng E, Zheng T, Tian Y. Dual-Mode Au Nanoprobe Based on Surface Enhancement Raman Scattering and Colorimetry for Sensitive Determination of Telomerase Activity Both in Cell Extracts and in the Urine of Patients. ACS Sens 2019; 4:211-217. [PMID: 30489069 DOI: 10.1021/acssensors.8b01244] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Telomerase is a valuable biomarker, which is highly correlated to cancer diseases. However, the single-mode probe for telomerase detection cannot satisfy the challenge of detection of telomerase activity rapidly, simply with high selectivity, sensitivity, and accuracy both in preliminary diagnosis and in point of care (POC) testing. Therefore, there is an urgent need to develop a robust approach with controllable assembly and high accuracy to consider both the simplification of preliminary diagnosis and POC testing and the quantification requirement for early clinical diagnosis and treatment. Herein, a novel dual-mode Au NPs probe was developed for determination of telomerase activity with controllable assembly and aggregation statement based on surface enhancement Raman scattering (SERS) and colorimetry. In this strategy, an Au dimer-based probe with high uniformity was assembled successfully, telomerase activity was reflected according to the color variations of solution and the Raman intensity of Raman reporter. Taking advantage of the uniformity of Au dimers and the combination of colorimetry and SERS techniques, our strategy determined the telomerase activity with high accuracy, sensitivity, and wide range. The established probe possessed of high selectivity, sensitivity, and accuracy, which was approved as a reliable, intuitional, and convenient approach for detecting telomerase activity.
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Affiliation(s)
- Enduo Feng
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Dongchuan Road 500, Shanghai 200241, P. R. China
| | - Tingting Zheng
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Dongchuan Road 500, Shanghai 200241, P. R. China
| | - Yang Tian
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Dongchuan Road 500, Shanghai 200241, P. R. China
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Wu H, Luo Y, Huang Y, Dong Q, Hou C, Huo D, Zhao J, Lei Y. A Simple SERS-Based Trace Sensing Platform Enabled by AuNPs-Analyte/AuNPs Double-Decker Structure on Wax-Coated Hydrophobic Surface. Front Chem 2018; 6:482. [PMID: 30460223 PMCID: PMC6232669 DOI: 10.3389/fchem.2018.00482] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 09/21/2018] [Indexed: 11/24/2022] Open
Abstract
In this work, a simple and versatile SERS sensing platform enabled by AuNPs-analyte/AuNPs double-decker structure on wax-coated hydrophobic surface was developed using a portable Raman spectrometer. Wax-coated silicon wafer served as a hydrophobic surface to induce both aggregation and concentration of aqueous phase AuNPs mixed with analyte of interest. After drying, another layer of AuNPs was drop-cast onto the layer of AuNPs-analyte on the substrate to form double-decker structure, thus introducing more “hot spots” to further enhance the Raman signal. To validate the sensing platform, methyl parathion (pesticide), and melamine (a nitrogen-enrich compound illegally added to food products to increase their apparent protein content) were employed as two model compounds for trace sensing demonstration. The as-fabricated sensor showed high reproducibility and sensitivity toward both methyl parathion and melamine detection with the limit of detection at the nanomolar and sub-nanomolar concentration level, respectively. In addition, remarkable recoveries for methyl parathion spiked into lake water samples were obtained, while reasonably good recoveries for melamine spiked into milk samples were achieved. These results demonstrate that the as-developed SERS sensing platform holds great promise in detecting trace amount of hazardous chemicals for food safety and environment protection.
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Affiliation(s)
- Huixiang Wu
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, China.,Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT, United States
| | - Yi Luo
- Department of Chemistry, University of Connecticut, Storrs, CT, United States
| | - Yikun Huang
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, United States
| | - Qiuchen Dong
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, United States
| | - Changjun Hou
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, China
| | - Danqun Huo
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, China
| | - Jing Zhao
- Department of Chemistry, University of Connecticut, Storrs, CT, United States
| | - Yu Lei
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT, United States.,Department of Biomedical Engineering, University of Connecticut, Storrs, CT, United States
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Lv W, Gu C, Zeng S, Han J, Jiang T, Zhou J. One-Pot Synthesis of Multi-Branch Gold Nanoparticles and Investigation of Their SERS Performance. Biosensors (Basel) 2018; 8:E113. [PMID: 30463357 DOI: 10.3390/bios8040113] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 11/14/2018] [Accepted: 11/16/2018] [Indexed: 01/11/2023]
Abstract
Gold nanoparticles with multiple branches have attracted intensive studies for their application in sensing of low trace molecules. A large number of the merits found on the gold nanoparticles for the above applications are attributed to the strong localized surface plasmon resonance excited by the incident radiation. However, a facile and flexible way of synthesizing the multi-branch gold nanoparticles with tunable localized surface plasmon resonance frequency is still a challenge for the plasmonic research field. Herein, we report an efficient one-pot synthesis of multi-branch gold nanoparticles method that resembles a seed-medicated approach while using no further chemicals except chloroauric acid, ascorbic acid and 4-(2-Hydroxyethyl)-1-piperazinyl]-ethanesulfonic acid. By controlling the amounts of ascorbic acid volumes in the reaction mixture, the morphology and the localized surface plasmon resonance frequency of the synthesized multi-branch gold nanoparticles can be manipulated conveniently. Moreover, using the 4-Mercaptobenzoic acid as the Raman reporter, the multi-branch gold nanoparticles show superior surface-enhanced Raman spectroscopy characteristics that can be potentially used in chemical and biological sensing.
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Wu H, Sun X, Hou C, Hou J, Lei Y. Preparation of Quasi-Three-Dimensional Porous Ag and Ag-NiO Nanofibrous Mats for SERS Application. Sensors (Basel) 2018; 18:E2862. [PMID: 30200221 DOI: 10.3390/s18092862] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 08/22/2018] [Accepted: 08/26/2018] [Indexed: 12/02/2022]
Abstract
In this study, two new quasi-three-dimensional Surface Enhanced Raman Scattering (SERS) substrates, namely porous Ag and Ag-NiO nanofibrous mats, were prepared using a simple, electrospinning-calcination, two-step synthetic process. AgNO3/polyvinyl pyrrolidone (PVP) and AgNO3/Ni(NO3)2/PVP composites serving as precursors were electrospun to form corresponding precursory nanofibers. Porous Ag and Ag-NiO nanofibers were successfully obtained after a 3-h calcination at 500 °C under air atmosphere, and analyzed using various material characterization techniques. Synthesized, quasi-three-dimensional porous Ag and Ag-NiO nanofibrous mats were applied as SERS substrates, to measure the model compound Rhodamine 6G (R6G), and investigate the corresponding signal enhancement. Furthermore, porous Ag and Ag-NiO nanofibrous mats were employed as SERS substrates for melamine and methyl parathion respectively. Sensitive detection of melamine and methyl parathion was achieved, indicating their feasibility as an active SERS sensing platform, and potential for food safety and environmental monitoring. All the results suggest that the electrospinning-calcination, two-step method offers a new, low cost, high performance solution in the preparation of SERS substrates.
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Zhang Y, Liu Z, Thackray BD, Bao Z, Yin X, Shi F, Wu J, Ye J, Di W. Intraoperative Raman-Guided Chemo-Photothermal Synergistic Therapy of Advanced Disseminated Ovarian Cancers. Small 2018; 14:e1801022. [PMID: 29974621 DOI: 10.1002/smll.201801022] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 05/08/2018] [Indexed: 05/24/2023]
Abstract
Abdominal miliary spread and metastasis is one of the most aggressive features in advanced ovarian cancer patients. The current standard treatment of advanced ovarian cancer is cytoreductive surgery (CRS) combined with hyperthermic intraperitoneal chemotherapy (HIPEC). However, most patients cannot receive optimal CRS outcomes due to the extreme difficulty of completely excising all microtumors during operation. Though HIPEC can improve prognosis, treatment is untargeted and may damage healthy organs and cause complications. New strategies for precise detection and complete elimination of disseminated microtumors without side effects are therefore highly desirable. Here, cisplatin-loaded gap-enhanced Raman tags (C-GERTs) are designed specifically for the intraoperative detection and elimination of unresectable disseminated advanced ovarian tumors. With unique and strong Raman signals, good biocompatibility, decent plasmonic photothermal conversion, and good drug loading capacity, C-GERTs enable detection and specific elimination of microtumors with a minimum diameter of 1 mm via chemo-photothermal synergistic therapy, causing minimal side effects and significantly prolonging survival in mice. The results demonstrate that C-GERTs-based chemo-photothermal synergistic therapy can effectively control the spread of disseminated tumors in mice and has potential as a safe and powerful method for treatment of advanced ovarian cancers, to improve survival and life quality of patients.
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Affiliation(s)
- Yuqing Zhang
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
| | - Zhiyang Liu
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
- Shanghai Key Laboratory of Gynecologic Oncology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
| | - Benjamin D Thackray
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
| | - Zhouzhou Bao
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
- Shanghai Key Laboratory of Gynecologic Oncology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
| | - Xia Yin
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
- Shanghai Key Laboratory of Gynecologic Oncology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
| | - Fenglei Shi
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Jianbo Wu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Jian Ye
- School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, P. R. China
- Shanghai Key Laboratory of Gynecologic Oncology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
| | - Wen Di
- Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
- Shanghai Key Laboratory of Gynecologic Oncology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, P. R. China
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Kwizera EA, O'Connor R, Vinduska V, Williams M, Butch ER, Snyder SE, Chen X, Huang X. Molecular Detection and Analysis of Exosomes Using Surface-Enhanced Raman Scattering Gold Nanorods and a Miniaturized Device. Theranostics 2018; 8:2722-2738. [PMID: 29774071 PMCID: PMC5957005 DOI: 10.7150/thno.21358] [Citation(s) in RCA: 140] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 01/09/2018] [Indexed: 12/24/2022] Open
Abstract
Exosomes are a potential source of cancer biomarkers. Probing tumor-derived exosomes can offer a potential non-invasive way to diagnose cancer, assess cancer progression, and monitor treatment responses. Novel molecular methods would facilitate exosome analysis and accelerate basic and clinical exosome research. Methods: A standard gold-coated glass microscopy slide was used to develop a miniaturized affinity-based device to capture exosomes in a target-specific manner with the assistance of low-cost 3-D printing technology. Gold nanorods coated with QSY21 Raman reporters were used as the label agent to quantitatively detect the target proteins based on surface enhanced Raman scattering spectroscopy. The expressions of several surface protein markers on exosomes from conditioned culture media of breast cancer cells and from HER2-positive breast cancer patients were quantitatively measured. The data was statistically analyzed and compared with healthy controls. Results: A miniaturized 17 × 5 Au array device with 2-mm well size was fabricated to capture exosomes in a target-specific manner and detect the target proteins on exosomes with surface enhanced Raman scattering gold nanorods. This assay can specifically detect exosomes with a limit of detection of 2×106 exosomes/mL and analyze over 80 purified samples on a single device within 2 h. Using the assay, we have showed that exosomes derived from MDA-MB-231, MDA-MB-468, and SKBR3 breast cancer cells give distinct protein profiles compared to exosomes derived from MCF12A normal breast cells. We have also showed that exosomes in the plasma from HER2-positive breast cancer patients exhibit significantly (P ≤ 0.01) higher level of HER2 and EpCAM than those from healthy donors. Conclusion: We have developed a simple, inexpensive, highly efficient, and portable Raman exosome assay for detection and protein profiling of exosomes. Using the assay and model exosomes from breast cancer cells, we have showed that exosomes exhibit diagnostic surface protein markers, reflecting the protein profile of their donor cells. Through proof-of-concept studies, we have identified HER2 and EpCAM biomarkers on exosomes in plasma from HER2-positive breast cancer patients, suggesting the diagnostic potential of these markers for breast cancer diagnostics. This assay would accelerate exosome research and pave a way to the development of novel cancer liquid biopsy for cancer detection and monitoring.
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Affiliation(s)
| | - Ryan O'Connor
- Department of Chemistry, The University of Memphis, Memphis, TN 38152
| | - Vojtech Vinduska
- Department of Chemistry, The University of Memphis, Memphis, TN 38152
| | - Melody Williams
- Department of Chemistry, The University of Memphis, Memphis, TN 38152
| | - Elizabeth R. Butch
- Diagnostics Imaging Department, St Jude Children's Research Hospital, Memphis, TN 38105
| | - Scott E. Snyder
- Diagnostics Imaging Department, St Jude Children's Research Hospital, Memphis, TN 38105
| | - Xiang Chen
- Department of Computational Biology, St Jude Children's Research Hospital, Memphis, TN 38105
| | - Xiaohua Huang
- Department of Chemistry, The University of Memphis, Memphis, TN 38152
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Li X, Yang T, Li CS, Song Y, Lou H, Guan D, Jin L. Surface Enhanced Raman Spectroscopy (SERS) for the Multiplex Detection of Braf, Kras, and Pik3ca Mutations in Plasma of Colorectal Cancer Patients. Am J Cancer Res 2018; 8:1678-1689. [PMID: 29556349 PMCID: PMC5858175 DOI: 10.7150/thno.22502] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 11/24/2017] [Indexed: 12/18/2022] Open
Abstract
In this paper, we discuss the use of a procedure based on polymerase chain reaction (PCR) and surface enhanced Raman spectroscopy (SERS) (PCR-SERS) to detect DNA mutations. Methods: This method was implemented by first amplifying DNA-containing target mutations, then by annealing probes, and finally by applying SERS detection. The obtained SERS spectra were from a mixture of fluorescence tags labeled to complementary sequences on the mutant DNA. Then, the SERS spectra of multiple tags were decomposed to component tag spectra by multiple linear regression (MLR). Results: The detection limit was 10-11 M with a coefficient of determination (R2) of 0.88. To demonstrate the applicability of this process on real samples, the PCR-SERS method was applied on blood plasma taken from 49 colorectal cancer patients to detect six mutations located at the BRAF, KRAS, and PIK3CA genes. The mutation rates obtained by the PCR-SERS method were in concordance with previous research. Fisher's exact test showed that only two detected mutations at BRAF (V600E) and PIK3CA (E542K) were significantly positively correlated with right-sided colon cancer. No other clinical feature such as gender, age, cancer stage, or differentiation was correlated with mutation (V600E at BRAF, G12C, G12D, G12V, G13D at KRAS, and E542K at PIK3CA). Visually, a dendrogram drawn through hierarchical clustering analysis (HCA) supported the results of Fisher's exact test. The clusters drawn by all six mutations did not conform to the distributions of cancer stages, differentiation or cancer positions. However, the cluster drawn by the two mutations of V600E and E542K showed that all samples with those mutations belonged to the right-sided colon cancer group. Conclusion: The suggested PCR-SERS method is multiplexed, flexible in probe design, easy to incorporate into existing PCR conditions, and was sensitive enough to detect mutations in blood plasma.
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Lu P, Lang J, Weng Z, Rahimi-Iman A, Wu H. Hybrid Structure of 2D Layered GaTe with Au Nanoparticles for Ultrasensitive Detection of Aromatic Molecules. ACS Appl Mater Interfaces 2018; 10:1356-1362. [PMID: 29220168 DOI: 10.1021/acsami.7b14121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Owing to a complex monocline structure and high-density of defects in monocrystalline GaTe, the performance of GaTe-based electronic devices is considerably compromised. Yet, the defects' nature in GaTe could be a merit rather than a shortcoming in other realms. In our work, the density of defects in GaTe films is utilized for a facile decoration of Au nanoparticles (NPs), which allowed us to extend its application potential to the domain of surface enhanced Raman scattering (SERS) for the first time. Two-dimensional (2D) GaTe layered structures are prepared by mechanical exfoliation, and high-density Au NPs are synthesized by immersion of 2D GaTe in HAuCl4 aqueous solution. By varying the immersion time, the sizes and coverage rate of Au NPs on GaTe can be elaborately tuned. Thanks to the defect nature of GaTe, the maximum coverage amounts to 98%. The hereby achieved Au-NPs-2D-GaTe hybrid structure demonstrates outstanding properties as a superior SERS substrate for ultrasensitive detection of R6G aromatic molecules. Remarkably, the enhancement factor reaches up to 1.6 × 104, and the minimum detectable concentration is 10-11 M, undercutting that of recently reported Au-NPs-MoS2 SERS and Au-NPs-graphene SERS substrates which have a similar structure. With superior detection capability and facile preparation, Au-NPs-GaTe SERS substrates can become a perfect choice for the detection of aromatic molecules.
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Affiliation(s)
- Pengqi Lu
- Department of Physics and State Key Laboratory of Silicon Materials, Zhejiang University , Hangzhou 310027, P.R. China
| | - Jiawei Lang
- Department of Physics and State Key Laboratory of Silicon Materials, Zhejiang University , Hangzhou 310027, P.R. China
| | - Zeping Weng
- Department of Physics and State Key Laboratory of Silicon Materials, Zhejiang University , Hangzhou 310027, P.R. China
| | - Arash Rahimi-Iman
- Faculty of Physics and Materials Sciences Center, Philipps-Universität Marburg , 35032 Marburg, Germany
| | - Huizhen Wu
- Department of Physics and State Key Laboratory of Silicon Materials, Zhejiang University , Hangzhou 310027, P.R. China
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Ujihara M, Dang NM, Imae T. Surface-Enhanced Resonance Raman Scattering of Rhodamine 6G in Dispersions and on Films of Confeito-Like Au Nanoparticles. Sensors (Basel) 2017; 17:s17112563. [PMID: 29112163 PMCID: PMC5712894 DOI: 10.3390/s17112563] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 11/01/2017] [Accepted: 11/05/2017] [Indexed: 01/20/2023]
Abstract
Surface-enhanced resonance Raman scattering (SERRS) of rhodamine 6G was measured on confeito-like Au nanoparticles (CAuNPs). The large CAuNPs (100 nm in diameter) in aqueous dispersion systems showed stronger enhancing effect (analytical enhancement factor: over 105) of SERRS than the small CAuNPs (50 nm in diameter), while the spherical Au nanoparticles (20 nm in diameter) displayed rather weak intensities. Especially, minor bands in 1400–1600 cm−1 were uniquely enhanced by the resonance effect of CAuNPs. The enhancement factors revealed a concentration dependence of the enhancing effect at low concentration of rhodamine 6G. This dependency was due to a large capacity of hot-spots on CAuNPs, which were formed without agglomeration. The surface-enhancing behaviour in the film systems was similar to that in the dispersions, although the large CAuNPs had lower enhancing effect in the films, and the small CAuNPs and the spherical Au nanoparticles were more effective in their films. These results suggest that the CAuNPs have an advantage in ultrasensitive devices both in dispersions and films, compared to the agglomerate of spherical Au nanoparticles.
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Affiliation(s)
- Masaki Ujihara
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 10607, Taiwan.
| | - Nhut Minh Dang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 10607, Taiwan.
| | - Toyoko Imae
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 10607, Taiwan.
- Department of Chemical Engineering, National Taiwan University of Science and Technology, 43 Keelung Road, Section 4, Taipei 10607, Taiwan.
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Rippa M, Castagna R, Pannico M, Musto P, Borriello G, Paradiso R, Galiero G, Bolletti Censi S, Zhou J, Zyss J, Petti L. Octupolar Metastructures for a Highly Sensitive, Rapid, and Reproducible Phage-Based Detection of Bacterial Pathogens by Surface-Enhanced Raman Scattering. ACS Sens 2017; 2:947-954. [PMID: 28750539 DOI: 10.1021/acssensors.7b00195] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The development of fast and ultrasensitive methods to detect bacterial pathogens at low concentrations is of high relevance for human and animal health care and diagnostics. In this context, surface-enhanced Raman scattering (SERS) offers the promise of a simplified, rapid, and high-sensitive detection of biomolecular interactions with several advantages over previous assay methodologies. In this work, we have conceived reproducible SERS nanosensors based on tailored multilayer octupolar nanostructures which can combine high enhancement factor and remarkable molecular selectivity. We show that coating novel multilayer octupolar metastructures with proper self-assembled monolayer (SAM) and immobilized phages can provide label-free analysis of pathogenic bacteria via SERS leading to a giant increase in SERS enhancement. The strong relative intensity changes of about 2100% at the maximum scattered SERS wavelength, induced by the Brucella bacterium captured, demonstrate the performance advantages of the bacteriophage sensing scheme. We performed measurements at the single-cell level thus allowing fast identification in less than an hour without any demanding sample preparation process. Our results based on designing well-controlled octupolar coupling platforms open up new opportunities toward the use of bacteriophages as recognition elements for the creation of SERS-based multifunctional biochips for rapid culture and label-free detection of bacteria.
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Affiliation(s)
- Massimo Rippa
- Institute of Applied Sciences and Intelligent Systems “E. Caianiello” of CNR, 80072 Pozzuoli, Italy
| | - Riccardo Castagna
- Institute of Applied Sciences and Intelligent Systems “E. Caianiello” of CNR, 80072 Pozzuoli, Italy
| | - Marianna Pannico
- Institute for Polymers, Composites, and Biomaterials of CNR, 80072 Pozzuoli, Italy
| | - Pellegrino Musto
- Institute for Polymers, Composites, and Biomaterials of CNR, 80072 Pozzuoli, Italy
| | - Giorgia Borriello
- Institute of Applied Sciences and Intelligent Systems “E. Caianiello” of CNR, 80072 Pozzuoli, Italy
- Zooprofilattico Institute of the South, 80055 Portici, Italy
| | - Rubina Paradiso
- Zooprofilattico Institute of the South, 80055 Portici, Italy
| | - Giorgio Galiero
- Zooprofilattico Institute of the South, 80055 Portici, Italy
| | | | - Jun Zhou
- Institute of Applied Sciences and Intelligent Systems “E. Caianiello” of CNR, 80072 Pozzuoli, Italy
- Institute
of Photonics, Faculty of Science, Ningbo University, Ningbo 315211, China
| | - Joseph Zyss
- Institute of Applied Sciences and Intelligent Systems “E. Caianiello” of CNR, 80072 Pozzuoli, Italy
- Laboratoire
de Photonique Quantique et Moléculaire, CNRS and Ecole Normale Paris-Saclay, 94230 Cachan, France
| | - Lucia Petti
- Institute of Applied Sciences and Intelligent Systems “E. Caianiello” of CNR, 80072 Pozzuoli, Italy
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Pham XH, Hahm E, Kim TH, Kim HM, Lee SH, Lee YS, Jeong DH, Jun BH. Adenosine Triphosphate-Encapsulated Liposomes with Plasmonic Nanoparticles for Surface Enhanced Raman Scattering-Based Immunoassays. Sensors (Basel) 2017; 17:E1480. [PMID: 28644380 DOI: 10.3390/s17071480] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
In this study, we prepared adenosine triphosphate (ATP) encapsulated liposomes, and assessed their applicability for the surface enhanced Raman scattering (SERS)-based assays with gold-silver alloy (Au@Ag)-assembled silica nanoparticles (NPs; SiO₂@Au@Ag). The liposomes were prepared by the thin film hydration method from a mixture of l-α-phosphatidylcholine, cholesterol, and PE-PEG2000 in chloroform; evaporating the solvent, followed by hydration of the resulting thin film with ATP in phosphate-buffered saline (PBS). Upon lysis of the liposome, the SERS intensity of the SiO₂@Au@Ag NPs increased with the logarithm of number of ATP-encapsulated liposomes after lysis in the range of 8 × 10⁶ to 8 × 1010. The detection limit of liposome was calculated to be 1.3 × 10-17 mol. The successful application of ATP-encapsulated liposomes to SiO₂@Au@Ag NPs based SERS analysis has opened a new avenue for Raman label chemical (RCL)-encapsulated liposome-enhanced SERS-based immunoassays.
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Fei X, Liu Z, Hou Y, Li Y, Yang G, Su C, Wang Z, Zhong H, Zhuang Z, Guo Z. Synthesis of Au NP@MoS₂ Quantum Dots Core@Shell Nanocomposites for SERS Bio-Analysis and Label-Free Bio-Imaging. Materials (Basel) 2017; 10:E650. [PMID: 28773010 PMCID: PMC5554031 DOI: 10.3390/ma10060650] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 05/11/2017] [Accepted: 05/26/2017] [Indexed: 01/24/2023]
Abstract
In this work, we report a facile method using MoS₂ quantum dots (QDs) as reducers to directly react with HAuCl₄ for the synthesis of Au nanoparticle@MoS₂ quantum dots (Au NP@MoS₂ QDs) core@shell nanocomposites with an ultrathin shell of ca. 1 nm. The prepared Au NP@MoS₂ QDs reveal high surface enhanced Raman scattering (SERS) performance regarding sensitivity as well as the satisfactory SERS reproducibility and stability. The limit of detection of the hybrids for crystal violet can reach 0.5 nM with a reasonable linear response range from 0.5 μM to 0.5 nM (R² ≈ 0.974). Furthermore, the near-infrared SERS detection based on Au NP@MoS₂ QDs in living cells is achieved with distinct Raman signals which are clearly assigned to the various cellular components. Meanwhile, the distinguishable SERS images are acquired from the 4T1 cells with the incubation of Au NP@MoS₂ QDs. Consequently, the straightforward strategy of using Au NP@MoS₂ QDs exhibits great potential as a superior SERS substrate for chemical and biological detection as well as bio-imaging.
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Affiliation(s)
- Xixi Fei
- MOE Key Laboratory of Laser Life Science & SATCM Third Grade Laboratory of Chinese Medicine and Photonics Technology, College of Biophotonics, South China Normal University, Guangzhou 510631, Guangdong, China.
| | - Zhiming Liu
- MOE Key Laboratory of Laser Life Science & SATCM Third Grade Laboratory of Chinese Medicine and Photonics Technology, College of Biophotonics, South China Normal University, Guangzhou 510631, Guangdong, China.
| | - Yuqing Hou
- MOE Key Laboratory of Laser Life Science & SATCM Third Grade Laboratory of Chinese Medicine and Photonics Technology, College of Biophotonics, South China Normal University, Guangzhou 510631, Guangdong, China.
| | - Yi Li
- MOE Key Laboratory of Laser Life Science & SATCM Third Grade Laboratory of Chinese Medicine and Photonics Technology, College of Biophotonics, South China Normal University, Guangzhou 510631, Guangdong, China.
| | - Guangcun Yang
- MOE Key Laboratory of Laser Life Science & SATCM Third Grade Laboratory of Chinese Medicine and Photonics Technology, College of Biophotonics, South China Normal University, Guangzhou 510631, Guangdong, China.
| | - Chengkang Su
- MOE Key Laboratory of Laser Life Science & SATCM Third Grade Laboratory of Chinese Medicine and Photonics Technology, College of Biophotonics, South China Normal University, Guangzhou 510631, Guangdong, China.
| | - Zhen Wang
- MOE Key Laboratory of Laser Life Science & SATCM Third Grade Laboratory of Chinese Medicine and Photonics Technology, College of Biophotonics, South China Normal University, Guangzhou 510631, Guangdong, China.
| | - Huiqing Zhong
- MOE Key Laboratory of Laser Life Science & SATCM Third Grade Laboratory of Chinese Medicine and Photonics Technology, College of Biophotonics, South China Normal University, Guangzhou 510631, Guangdong, China.
| | - Zhengfei Zhuang
- MOE Key Laboratory of Laser Life Science & SATCM Third Grade Laboratory of Chinese Medicine and Photonics Technology, College of Biophotonics, South China Normal University, Guangzhou 510631, Guangdong, China.
| | - Zhouyi Guo
- MOE Key Laboratory of Laser Life Science & SATCM Third Grade Laboratory of Chinese Medicine and Photonics Technology, College of Biophotonics, South China Normal University, Guangzhou 510631, Guangdong, China.
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Yang D, Cho H, Koo S, Vaidyanathan SR, Woo K, Yoon Y, Choo H. Simple, Large-Scale Fabrication of Uniform Raman-Enhancing Substrate with Enhancement Saturation. ACS Appl Mater Interfaces 2017; 9:19092-19101. [PMID: 28452459 DOI: 10.1021/acsami.7b03239] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
It is well-known that gold nanoparticle (AuNP) clusters generate strong surface-enhanced Raman scattering (SERS). In order to produce spatially uniform Raman-enhancing substrates at a large scale, we synthesized vertically perforated three-dimensional (3D) AuNP stacks. The 3D stacks were fabricated by first hydrothermally synthesizing ZnO nanowires perpendicular to silicon wafers followed by repetitively performing liquid-phase deposition of AuNPs on the tops and side surfaces of the nanowires. During the deposition process, the nanowires were shown to gradually dissolve away, leaving hollow vestiges or perforations surrounded by stacks of AuNPs. Simulation studies and experimental measurements reveal these nanoscale perforations serve as light paths that allow the excitation light to excite deeper regions of the 3D stacks for stronger overall Raman emission. Combined with properly sized nanoparticles, this feature maximizes and saturates the Raman enhancement at 1-pM sensitivity across the entire wafer-scale substrate, and the saturation improves the wafer-scale uniformity by a factor of 6 when compared to nanoparticle layers deposited directly on a silicon wafer substrate. Using the 3D-stacked substrates, quantitative sensing of adenine molecules yielded concentrations measurements within 10% of the known value. Understanding the enhancing mechanisms and engineering the 3D stacks have opened a new method of harnessing the intense SERS observed in nanoparticle clusters and realize practical SERS substrates with significantly improved uniformity suitable for quantitative chemical sensing.
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Affiliation(s)
- Daejong Yang
- Department of Medical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Hyunjun Cho
- Department of Electrical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Sukmo Koo
- Department of Medical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Sagar R Vaidyanathan
- Department of Electrical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Kelly Woo
- Department of Electrical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Youngzoon Yoon
- Device Lab, Device & System Research Center, Samsung Advanced Institute of Technology (SAIT) , Suwon 16678, Republic of Korea
| | - Hyuck Choo
- Department of Medical Engineering, California Institute of Technology , Pasadena, California 91125, United States
- Department of Electrical Engineering, California Institute of Technology , Pasadena, California 91125, United States
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Eremina OE, Sidorov AV, Shekhovtsova TN, Goodilin EA, Veselova IA. Novel Multilayer Nanostructured Materials for Recognition of Polycyclic Aromatic Sulfur Pollutants and Express Analysis of Fuel Quality and Environmental Health by Surface Enhanced Raman Spectroscopy. ACS Appl Mater Interfaces 2017; 9:15058-15067. [PMID: 28402098 DOI: 10.1021/acsami.7b02018] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A novel concept of advanced SERS (surface enhanced Raman spectroscopy) planar sensors is suggested for fast analysis of sulfur-containing hazardous oil components and persistent pollutants. The main advantage of the proposed sensors is the utilization of an additional preconcentrating layer of optically transparent chitosan gel, which is chemically modified with appropriate π-acceptor compounds to selectively form charge-transfer complexes (CTCs) at the interface with nanostructured silver coatings. The CTCs shift absorption bands of polycyclic aromatic sulfur heterocycles (PASHs) and other important analytes in a controllable way and thus provide a surplus enhancement of vibration modes due to resonant Raman scattering. This novel indicator system provides multiplex determination of PASHs in different forms in a small volume of oil without any tedious sample pretreatment steps. This approach opens new possibilities of increasing either spectral and concentration sensitivity or specificity of SERS-based sensors, allowing for new developments in the fields of ecology, advanced fuel analysis, and other prospective applications.
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Affiliation(s)
- Olga E Eremina
- Faculty of Chemistry, Moscow State University , Lenin Hills, 1-3, Moscow 119991, Russia
| | - Alexander V Sidorov
- Faculty of Materials Science, Moscow State University , Lenin Hills, 1-73, Moscow 119991, Russia
| | | | - Eugene A Goodilin
- Faculty of Chemistry, Moscow State University , Lenin Hills, 1-3, Moscow 119991, Russia
- Faculty of Materials Science, Moscow State University , Lenin Hills, 1-73, Moscow 119991, Russia
- Institute of General and Inorganic Chemistry , Leninskii prosp., 31, Moscow 119071, Russia
| | - Irina A Veselova
- Faculty of Chemistry, Moscow State University , Lenin Hills, 1-3, Moscow 119991, Russia
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47
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Teng H, Lv M, Liu L, Zhang X, Zhao Y, Wu Z, Xu H. Quantitative Detection of NADH Using a Novel Enzyme-Assisted Method Based on Surface-Enhanced Raman Scattering. Sensors (Basel) 2017; 17:E788. [PMID: 28387704 DOI: 10.3390/s17040788] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 03/30/2017] [Accepted: 03/30/2017] [Indexed: 01/26/2023]
Abstract
An enzymatic method for quantitative detection of the reduced form of nicotinamide-adenine dinucleotide (NADH) using surface-enhanced Raman scattering was developed. Under the action of NADH oxidase and horseradish peroxidase, NADH can generate hydrogen peroxide (H2O2) in a 1:1 molar ratio, and the H2O2 can oxidize a chromogen into pigment with a 1:1 molar ratio. Therefore, the concentration of NADH can be determined by detecting the generated pigment. In our experiments, eight chromogens were studied, and o-tolidine (OT) was selected because of the unique Raman peaks displayed by its corresponding pigment. The optimal OT concentration was 2 × 10−3 M, and this gave the best linear relationship and the widest linear range between the logarithmic H2O2 concentration and the logarithmic integrated SERS intensity of the peak centered at 1448 cm−1. Under this condition, the limit of detection for NADH was as low as 4 × 10−7 M. Two NADH samples with concentrations of 2 × 10−4 and 2 × 10−5 M were used to validate the linear relationship, and the logarithmic deviations were less than 3%.
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48
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Abstract
We demonstrated a flexible transparent and free-standing Si nanowire paper (SiNWP) as a surface enhanced Raman scattering (SERS) platform for in situ chemical sensing on warping surfaces with high sensitivity. The SERS activity has originated from the three-dimension interconnected nanowire network structure and electromagnetic coupling between closely separated nanowires in the SiNWP. In addition, the SERS activity can be highly improved by functionalizing the SiNWP with plasmonic Au nanoparticles. The hybrid substrate not only showed excellent reproducibility and stability of the SERS signal, but also maintained the flexibility and transparency of the pristine SiNWP. To demonstrate its potential application in food inspection, the Au nanoparticles-modified SiNWP was directly wrapped onto the lemon surface for in situ identification and detection of the pesticide residues. The results showed that the excellent SERS activity and transparency of the hybrid substrate enabled the detection of the pesticides down to 72 ng/cm2, which was much lower than the permitted residue dose in food safety.
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Affiliation(s)
- Hao Cui
- State Key Laboratory of Optoelectronic Materials and Technologies, ‡School of Materials Science and Engineering, §The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, ∥Guangdong Province Key Laboratory of Display Material and Technology, and ⊥School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Shuoyu Li
- State Key Laboratory of Optoelectronic Materials and Technologies, ‡School of Materials Science and Engineering, §The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, ∥Guangdong Province Key Laboratory of Display Material and Technology, and ⊥School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Shaozhi Deng
- State Key Laboratory of Optoelectronic Materials and Technologies, ‡School of Materials Science and Engineering, §The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, ∥Guangdong Province Key Laboratory of Display Material and Technology, and ⊥School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Huanjun Chen
- State Key Laboratory of Optoelectronic Materials and Technologies, ‡School of Materials Science and Engineering, §The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, ∥Guangdong Province Key Laboratory of Display Material and Technology, and ⊥School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
| | - Chengxin Wang
- State Key Laboratory of Optoelectronic Materials and Technologies, ‡School of Materials Science and Engineering, §The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, ∥Guangdong Province Key Laboratory of Display Material and Technology, and ⊥School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China
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Tang S, Li Y, Huang H, Li P, Guo Z, Luo Q, Wang Z, Chu PK, Li J, Yu XF. Efficient Enrichment and Self-Assembly of Hybrid Nanoparticles into Removable and Magnetic SERS Substrates for Sensitive Detection of Environmental Pollutants. ACS Appl Mater Interfaces 2017; 9:7472-7480. [PMID: 28181793 DOI: 10.1021/acsami.6b16141] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A structure consisting of a low surface energy substrate and low surface tension liquid is designed and prepared by taking advantage of perfluorinated fluid infusion into the porous Teflon membrane. This slippery platform allows efficient enrichment and self-assembly of hybrid nanoparticles and the assembled structure can be detached from the membrane. A macroscale superlattice array of Au nanorods doped with magnetic Fe3O4 nanoparticles is obtained by suppressing the outward capillary flow and coffee-ring effect during evaporative self-assembly. In SERS (surface enhanced Raman scattering) detection of environmental pollutants including thiram, diquat and polycyclic aromatic hydrocarbons, the removable plasmonic superlattice array with magnetic properties enables rapid separation of analytes from the solution resulting in excellent sensitivity and detection limits down to the nanomolar level. The self-assembly strategy shows great potential in the fabrication of removable 3D plasmonic superlattice arrays for SERS detections.
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Affiliation(s)
- Siying Tang
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, P. R. China
| | - Yong Li
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, P. R. China
| | - Hao Huang
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, P. R. China
| | - Penghui Li
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, P. R. China
- Department of Physics and Materials Science, City University of Hong Kong , Tat Chee Avenue, Kowloon, Hong Kong, P.R. China
| | - Zhinan Guo
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, P. R. China
- SZU-NUS Collaborative Innovation Center for Optoelectronic Science and Technology, and Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University , Shenzhen 518060, P. R. China
| | - Qian Luo
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, P. R. China
| | - Zhe Wang
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, P. R. China
| | - Paul K Chu
- Department of Physics and Materials Science, City University of Hong Kong , Tat Chee Avenue, Kowloon, Hong Kong, P.R. China
| | - Jia Li
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, P. R. China
| | - Xue-Feng Yu
- Institute of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, P. R. China
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Qiu S, Zhao F, Zenasni O, Li J, Shih WC. Nanoporous Gold Disks Functionalized with Stabilized G-Quadruplex Moieties for Sensing Small Molecules. ACS Appl Mater Interfaces 2016; 8:29968-29976. [PMID: 27622472 DOI: 10.1021/acsami.6b09767] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
We report label-free small molecule sensing on nanoporous gold disks functionalized with stabilized Guanine-quadruplex (G4) moieties using surface-enhanced Raman spectroscopy (SERS). By utilizing the unique G4 topological structure, target molecules can be selectively captured onto nanoporous gold (NPG) disk surfaces via π-π stacking and electrostatic attractions. Together with high-density plasmonic "hot spots" of NPG disks, the captured molecules produce a remarkable SERS signal. Our strategy represents the first example of the detection of foreign molecules conjugated to nondouble helical DNA nanostructures using SERS while providing a new technique for studying the formation and evolution of G4 moieties. The molecular specificity of G4 is known to be controlled by its unit sequence. Without losing generality, we have selected d(GGT)7GG sequence for the sensing of malachite green (MG), a known carcinogen frequently abused illegally in aquaculture. The newly developed technique achieved a lowest detectable concentration at an impressive 50 pM, two orders of magnitude lower than the European Union (EU) regulatory requirement, with high specificity against potential interferents. To demonstrate the translational potential of this technology, we achieved a lowest detectable concentration of 5.0 nM, meeting the EU regulatory requirement, using a portable probe based detection system.
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Affiliation(s)
- Suyan Qiu
- Institute for Quality & Safety and Standards of Agricultural Products Research, Jiangxi Academy of Agricultural Sciences , Nanchang, Jiangxi 330200, P. R. China
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