101
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Moore TJ, Sharma B. Direct Surface Enhanced Raman Spectroscopic Detection of Cortisol at Physiological Concentrations. Anal Chem 2020; 92:2052-2057. [PMID: 31874025 DOI: 10.1021/acs.analchem.9b04532] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Cortisol is an important steroid hormone in human physiology. Variations or abnormalities in the physiological cortisol levels control acute and chronic stress response, as well as contribute to diseases and syndromes including Addison's disease and Cushing syndrome. The ability to monitor cortisol levels in the physiological range is key in diagnosis and monitoring of these conditions, where current methodology for determination of cortisol levels relies on instrumentation that requires extensive sample preparation, long run times, and is destructive to the sample. Raman spectroscopy provides rapid sample analysis with relatively simple instrumentation; however, Raman spectroscopy is an inherently weak technique. To provide an enhanced Raman signal, we use surface enhanced Raman spectroscopy (SERS) which utilizes oscillating electric fields of metal nanoparticles, enhancing the overall electric field and therefore resulting in an enhanced signal. We demonstrate SERS-based detection of cortisol in the physiologically relevant range using colloidal silver nanoparticles in ethanolic solutions and bovine serum albumin. The SERS spectra obtained in an ethanol matrix demonstrate a sigmoidal concentration response over the physiologically relevant concentration range, with a limit of detection established at 177 nM. Analysis of cortisol solutions in a complex matrix (bovine serum albumin in phosphate buffered saline) is also demonstrated through the use of principal components analysis, a multivariate technique, which shows the separation of cortisol in a linear fashion with respect to cortisol concentration.
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Affiliation(s)
- T Joshua Moore
- Department of Chemistry , The University of Tennessee Knoxville , 1420 Circle Drive , Knoxville , Tennessee 37996 , United States
| | - Bhavya Sharma
- Department of Chemistry , The University of Tennessee Knoxville , 1420 Circle Drive , Knoxville , Tennessee 37996 , United States
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102
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Michon J, Benzaouia M, Yao W, Miller OD, Johnson SG. Limits to surface-enhanced Raman scattering near arbitrary-shape scatterers. OPTICS EXPRESS 2019; 27:35189-35202. [PMID: 31878692 DOI: 10.1364/oe.27.035189] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 10/22/2019] [Indexed: 06/10/2023]
Abstract
The low efficiency of Raman spectroscopy can be overcome by placing the active molecules in the vicinity of scatterers, typically rough surfaces or nanostructures with various shapes. This surface-enhanced Raman scattering (SERS) leads to substantial enhancement that depends on the scatterer that is used. In this work, we find fundamental upper bounds on the Raman enhancement for arbitrary-shaped scatterers, depending only on its material constants and the separation distance from the molecule. According to our metric, silver is optimal in visible wavelengths while aluminum is better in the near-UV region. Our general analytical bound scales as the volume of the scatterer and the inverse sixth power of the distance to the active molecule. Numerical computations show that simple geometries fall short of the bounds, suggesting further design opportunities for future improvement. For periodic scatterers, we use two formulations to discover different bounds, and the tighter of the two always must apply. Comparing these bounds suggests an optimal period depending on the volume of the scatterer.
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103
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Zhai Y, Zheng Y, Ma Z, Cai Y, Wang F, Guo X, Wen Y, Yang H. Synergistic Enhancement Effect for Boosting Raman Detection Sensitivity of Antibiotics. ACS Sens 2019; 4:2958-2965. [PMID: 31533426 DOI: 10.1021/acssensors.9b01436] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this paper, a two-step method is used to prepare a regenerative three-dimensional (3D) ZnO/Ag@Au substrate for developing a superior sensitive surface enhanced Raman scattering (SERS) method for detecting antibiotics. A great electromagnetic enhancement is observed from the as-prepared composite substrate, which is triggered by tuning the electron distribution of metals and semiconductor metal oxide. The strong interaction between target sample and the huge surface area of ZnO/Ag@Au composite promotes the charge transfer to produce promising chemical enhancement. The synergistic physical and chemical enhancement mechanisms are validated by density functional theory and finite difference time domain simulation. Additionally, the presence of light "echo effect" in the 3D structure of ZnO support could also amplify the efficiency of light excitation for Raman scattering. The above-stated merits benefit to boost the Raman scattering detection sensitivity for real samples. The ZnO/Ag@Au-based SERS substrate could detect rhodamine 6G molecules with an enhancement factor of up to 1.48 × 109 and the lowest detectable concentration of 10-10 M. As a real application, antibiotics sulfapyridine in milk is determined by using the proposed SERS protocol, and the limit of detection at 1 × 10-9 M could be reached. As a prospective, the ZnO/Ag@Au-based SERS method would be extended for food safety and biomedicine analysis.
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Affiliation(s)
- Yan Zhai
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Yunshan Zheng
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Zhiyuan Ma
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Yanzheng Cai
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Feng Wang
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Xiaoyu Guo
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Ying Wen
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Haifeng Yang
- The Education Ministry Key Lab of Resource Chemistry, Department of Chemistry, Shanghai Normal University, Shanghai 200234, P. R. China
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104
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Bontempi N, Cavaliere E, Cappello V, Pingue P, Gavioli L. Ag@TiO 2 nanogranular films by gas phase synthesis as hybrid SERS platforms. Phys Chem Chem Phys 2019; 21:25090-25097. [PMID: 31690913 DOI: 10.1039/c9cp03998h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The synthesis of hybrid metallic-dielectric substrates as reliable SERS platforms relies on core-shell nanoparticles, obtained by wet chemistry, with an outer dielectric shell composed of SiO2 or TiO2. Apart from the shell composition, the nanoparticle density and aggregation type strongly affect the surface-enhanced SERS. Going beyond a single layer by building random aggregates of hybrid NPs would result in a step forward in the production of reliable hybrid SERS platforms. Here we achieve the fabrication of a 3D nanogranular film of Ag metallic cores not fully enclosed in a TiO2 capping layer, defined as a Ag@TiO2 quasi-shell-isolated Raman substrate (Ag@TiO2 QuaSIRS) by an environmentally friendly gas phase synthesis technique (SCBD). The Ag core drives the electromagnetic enhancement with plasmonic hotspots while the TiO2 shell passivates it and leads to different possible surface functionalization. The SERS capabilities of the Ag@TiO2 QuaSIRS peak at a film thickness of 60 nm providing a detection limit of 10-9 M concentration for Methylene Blue at 632.81 nm. The importance of the nanogranular 3D morphology is evidenced by the very good detection of analytes dispersed in aqueous solutions, since the liquid can penetrate the pores hence exploiting most of the plasmonic hotspots present in the film. The versatility of SCBD to deposit such reliable hybrid SERS platforms by a single step at room temperature over different substrates provides an opportunity to design a new generation of hybrid SERS-active substrates based on hybrid nanoparticles.
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Affiliation(s)
- Nicolò Bontempi
- Interdisciplinary Laboratories for Advanced Materials Physics (i-LAMP) and Dipartimento di Matematica e Fisica, Università Cattolica del Sacro Cuore, Via Musei 41, 25121 Brescia, Italy. and Smart Bio-Interfaces, Istituto Italiano di Tecnologia (IIT), Viale Rinaldo Piaggio 34, Pontedera (Pisa) 56025, Italy
| | - Emanuele Cavaliere
- Interdisciplinary Laboratories for Advanced Materials Physics (i-LAMP) and Dipartimento di Matematica e Fisica, Università Cattolica del Sacro Cuore, Via Musei 41, 25121 Brescia, Italy.
| | - Valentina Cappello
- Center for Nanotechnology Innovation@NEST, Istituto Italiano di Tecnologia Piazza San, Silvestro, 12, 56127, Pisa, Italy
| | - Pasqualantonio Pingue
- NEST, Scuola Normale Superiore and CNR Istituto Nanoscienze, Piazza San Silvestro 12, 56127, Pisa (PI), Italy
| | - Luca Gavioli
- Interdisciplinary Laboratories for Advanced Materials Physics (i-LAMP) and Dipartimento di Matematica e Fisica, Università Cattolica del Sacro Cuore, Via Musei 41, 25121 Brescia, Italy.
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105
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106
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Park JE, Yonet-Tanyeri N, Vander Ende E, Henry AI, Perez White BE, Mrksich M, Van Duyne RP. Plasmonic Microneedle Arrays for in Situ Sensing with Surface-Enhanced Raman Spectroscopy (SERS). NANO LETTERS 2019; 19:6862-6868. [PMID: 31545611 PMCID: PMC7398609 DOI: 10.1021/acs.nanolett.9b02070] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Surface-enhanced Raman spectroscopy (SERS) is a sensitive, chemically specific, and short-time response probing method with significant potential in biomedical sensing. This paper reports the integration of SERS with microneedle arrays as a minimally invasive platform for chemical sensing, with a particular view toward sensing in interstitial fluid (ISF). Microneedle arrays were fabricated from a commercial polymeric adhesive and coated with plasmonically active gold nanorods that were functionalized with the pH-sensitive molecule 4-mercaptobenzoic acid. This sensor can quantitate pH over a range of 5 to 9 and can detect pH levels in an agar gel skin phantom and in human skin in situ. The sensor array is stable and mechanically robust in that it exhibits no loss in SERS activity after multiple punches through an agar gel skin phantom and human skin or after a month-long incubation in phosphate-buffered saline. This work is the first to integrate SERS-active nanoparticles with polymeric microneedle arrays and to demonstrate in situ sensing with this platform.
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Affiliation(s)
- Ji Eun Park
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Nihan Yonet-Tanyeri
- Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Emma Vander Ende
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Anne-Isabelle Henry
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Bethany E. Perez White
- Skin Tissue Engineering Core and Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611 United States
| | - Milan Mrksich
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Corresponding Authors:.
| | - Richard P. Van Duyne
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Biomedical Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Corresponding Authors:.
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107
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Zhang Q, Li J, Tang P, Lu X, Tian J, Zhong L. Dynamic Imaging of Transferrin Receptor Molecules on Single Live Cell with Bridge Gaps-Enhanced Raman Tags. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1373. [PMID: 31557852 PMCID: PMC6835696 DOI: 10.3390/nano9101373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 08/28/2019] [Accepted: 09/21/2019] [Indexed: 11/18/2022]
Abstract
A metal nanoparticles-based surface-enhanced Raman scattering (SERS) technique has been developed for biosensing and bioimaging due to its advantages in ultra-narrow line width for multiplexing, ultra-high sensitivity and excellent photostability. However, the "hotspots" effect between nanoparticles usually leads to unstable and nonuniform Raman enhancement, and this will greatly reduce the quality of SERS imaging. In this study, we employ the bridge gaps-enhanced Raman tags (BGERTs) to perform SERS imaging, in which BGERTs can not only reduce the influence of the "hotspots" effect between nanoparticles on Raman signal intensity but provide a great Raman enhancement when the Gold (Au) shell is thick enough. Based on BGERTs and its conjugation with the thiol-terminated polyethylene glycol (PEG) and transferrin, we construct a targeted Transferrin (TF)-PEG-BGERTs SERS nanoprobe and achieve the dynamic imaging of transferrin receptor (TfR) molecules on a single live cell, in which the role of transferrin-conjugated PEG-BGERT is for targeting TfR molecules located in cellular membrane surface. Importantly, this BGERTs-based SERS imaging could potentially provide a useful tool for studying the precise mechanism during the receptor-mediated nanoparticles endocytosis or cell proliferation, apoptosis, and other complicated molecular events.
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Affiliation(s)
- Qinnan Zhang
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Photoelectric Science and Engineering, South China Normal University, Guangzhou 510006, China.
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Jiaosheng Li
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Photoelectric Science and Engineering, South China Normal University, Guangzhou 510006, China.
| | - Ping Tang
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Photoelectric Science and Engineering, South China Normal University, Guangzhou 510006, China.
| | - Xiaoxu Lu
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Photoelectric Science and Engineering, South China Normal University, Guangzhou 510006, China.
| | - Jindong Tian
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Liyun Zhong
- Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Photoelectric Science and Engineering, South China Normal University, Guangzhou 510006, China.
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108
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Qiu J, Xie M, Lyu Z, Gilroy KD, Liu H, Xia Y. General Approach to the Synthesis of Heterodimers of Metal Nanoparticles through Site-Selected Protection and Growth. NANO LETTERS 2019; 19:6703-6708. [PMID: 31449753 DOI: 10.1021/acs.nanolett.9b03167] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Heterodimers of metal nanoparticles are widely sought for applications in photonics, sensing, and catalysis. In this work, we demonstrate a general approach to the fabrication of heterodimers of metal nanoparticles by leveraging the concept of site-selected growth under the protection of an inert material. When styrene is polymerized in the presence of Au nanoparticles, the resultant polystyrene (PS) can be controlled to grow from only one portion of the surface of a nanoparticle. Free of PS, the remaining portion can serve as an active site for the heterogeneous nucleation and growth of the second metal. After dissolving the PS component, we obtain heterodimers of metal nanoparticles with tunable elemental compositions and controllable physical dimensions. The contact area between the two metals can also be maneuvered by adjusting the concentration of divinylbenzene used for copolymerization with styrene. Using this method, we have prepared Au-Ag, Au-Pd, and Au-Pt heterodimers and further investigated their plasmonic properties. The capability of this approach should be extendible to the fabrication of heterodimers with a broader range of compositions and properties.
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Affiliation(s)
- Jichuan Qiu
- The Wallace H. Coulter Department of Biomedical Engineering , Georgia Institute of Technology and Emory University , Atlanta , Georgia 30332 , United States
- State Key Laboratory of Crystal Materials , Shandong University , Jinan , Shandong 250100 , P. R. China
| | - Minghao Xie
- School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Zhiheng Lyu
- School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
| | - Kyle D Gilroy
- The Wallace H. Coulter Department of Biomedical Engineering , Georgia Institute of Technology and Emory University , Atlanta , Georgia 30332 , United States
| | - Hong Liu
- State Key Laboratory of Crystal Materials , Shandong University , Jinan , Shandong 250100 , P. R. China
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering , Georgia Institute of Technology and Emory University , Atlanta , Georgia 30332 , United States
- School of Chemistry and Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States
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109
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Li S, Xu J, Wang S, Xia X, Chen L, Chen Z. Versatile metal graphitic nanocapsules for SERS bioanalysis. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.05.049] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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110
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Bhattacharjee U, West CA, Hosseini Jebeli SA, Goldwyn HJ, Kong XT, Hu Z, Beutler EK, Chang WS, Willets KA, Link S, Masiello DJ. Active Far-Field Control of the Thermal Near-Field via Plasmon Hybridization. ACS NANO 2019; 13:9655-9663. [PMID: 31361953 DOI: 10.1021/acsnano.9b04968] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The ability to control and manipulate temperature at nanoscale dimensions has the potential to impact applications including heat-assisted magnetic recording, photothermal therapies, and temperature-driven reactivity. One challenge with controlling temperature at nanometer dimensions is the need to mitigate heat diffusion, such that the temperature only changes in well-defined nanoscopic regions of the sample. Here we demonstrate the ability to use far-field laser excitation to actively shape the thermal near-field in individual gold nanorod heterodimers by resonantly pumping either the in-phase or out-of-phase hybridized dipole plasmon modes. Using single-particle photothermal heterodyne imaging, we demonstrate localization bias in the photothermal intensity due to preferential heating of one of the nanorods within the pair. Theoretical modeling and numerical simulation make explicit how the resulting photothermal images encode wavelength-dependent temperature biases between each nanorod within a heterodimer, demonstrating the ability to actively manage the thermal near-field by simply tuning the color of incident light.
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Affiliation(s)
- Ujjal Bhattacharjee
- Department of Chemistry , Rice University , Houston , Texas 77005 , United States
| | - Claire A West
- Department of Chemistry , University of Washington , Seattle , Washington 98195 , United States
| | - Seyyed Ali Hosseini Jebeli
- Department of Electrical and Computer Engineering , Rice University , Houston , Texas 77005 , United States
| | - Harrison J Goldwyn
- Department of Chemistry , University of Washington , Seattle , Washington 98195 , United States
| | - Xiang-Tian Kong
- Department of Chemistry , University of Washington , Seattle , Washington 98195 , United States
| | - Zhongwei Hu
- Department of Chemistry , University of Washington , Seattle , Washington 98195 , United States
| | - Elliot K Beutler
- Department of Chemistry , University of Washington , Seattle , Washington 98195 , United States
| | - Wei-Shun Chang
- Department of Chemistry , Rice University , Houston , Texas 77005 , United States
| | - Katherine A Willets
- Department of Chemistry , Temple University , Philadelphia , Pennsylvania 19122 , United States
| | - Stephan Link
- Department of Electrical and Computer Engineering , Rice University , Houston , Texas 77005 , United States
- Department of Chemistry , Rice University , Houston , Texas 77005 , United States
| | - David J Masiello
- Department of Chemistry , University of Washington , Seattle , Washington 98195 , United States
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111
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Guo J, Liu G, Ma Q, Yang S, Li Y, Cai W. Fabrication of Ag-nanosheets-built micro/nanostructured arrays via in situ conversion on Cu 2O-coated Si nanocone platform and their highly structurally-enhanced SERS effect. NANOTECHNOLOGY 2019; 30:345302. [PMID: 31063983 DOI: 10.1088/1361-6528/ab1f98] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A controllable and flexible route is presented for the fabrication of Ag-nanosheets-built micro/nanostructural ordered arrays via in situ conversion on the Cu2O-coated silicon nanocone (SNC) platform in the AgNO3-contained solution. The platform is pre-prepared by the reactive ion etching of the organic colloidal monolayer-covered silicon wafer, Cu sputtering deposition and in situ oxidation. The obtained Ag micro/nanostructured array consists of nearly spherical and micro-sized particles, which are hexagonally arranged on the substrate. The spherical particles are built of the vertically standing and cross-linked nanosheets with about 30 nm in thickness. This Ag-nanosheets-built array shows high number density of the edges and nanogaps as well as the robust and homogeneous structure. Its formation is attributed to the in situ conversion reaction on the Cu2O-coated SNC platform and the preferentially-oriented connection of Ag nanoparticles. Such Ag array has shown significantly higher surface enhanced Raman scattering (SERS) activity than the Ag nanoparticles' film-covered SNC array, with the enhancement factor up to 107 and the detection limitation down to ∼1 ppt level to the test molecules 4-aminothiophenol, as well as the good reproducibility in measurements. This study not only presents a controllable and flexible fabrication route to the plasmonic micro/nanostructured arrays but also provides the highly efficient and the practical chips for the SERS-based devices.
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Affiliation(s)
- Jing Guo
- Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China. University of Science and Technology of China, Hefei 230026, People's Republic of China
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112
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Zhang X, Liu C, Pei Y, Song W, Zhang S. Preparation of a Novel Raman Probe and Its Application in the Detection of Circulating Tumor Cells and Exosomes. ACS APPLIED MATERIALS & INTERFACES 2019; 11:28671-28680. [PMID: 31318195 DOI: 10.1021/acsami.9b09465] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The Raman probe plays an essential role in sensitive surface-enhanced Raman scattering (SERS) assay. Here, a novel Raman probe was developed by assembling gold nanoparticles in triangular pyramid DNA (TP-Au NPs). Such probe with intense electromagnetic hot spots can provide dramatically enhanced Raman scattering. Through assembling recognition DNA on one corner of the TP-DNA, the recognition event is definite and designable. The probe was characterized through TEM, and its SERS superiority was investigated. As models, circulating tumor cells and exosomes were detected with high sensitivity and selectivity by using this probe. Meanwhile, the developed SERS probe can also perform well in real world samples.
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Affiliation(s)
- Xiaoru Zhang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , PR China
| | - Chao Liu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , PR China
| | - Yujiao Pei
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , PR China
| | - Weiling Song
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE; Shandong Key Laboratory of Biochemical Analysis; College of Chemistry and Molecular Engineering , Qingdao University of Science and Technology , Qingdao 266042 , PR China
| | - Shusheng Zhang
- Shandong Province Key Laboratory of Detection Technology for Tumor Makers, College of Chemistry and Chemical Engineering, Collaborative Innovation Center of Tumor Marker Detection Technology, Equipment and Diagnosis-Therapy Integration in Universities of Shandong , Linyi University , Linyi 276000 , P. R. China
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113
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Wu H, Luo Y, Hou C, Huo D, Wang W, Zhao J, Lei Y. Rapid and fingerprinted monitoring of pesticide methyl parathion on the surface of fruits/leaves as well as in surface water enabled by gold nanorods based casting-and-sensing SERS platform. Talanta 2019; 200:84-90. [DOI: 10.1016/j.talanta.2019.03.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 02/26/2019] [Accepted: 03/01/2019] [Indexed: 12/24/2022]
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114
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Li M, Fan X, Gao Y, Qiu T. W 18O 49/Monolayer MoS 2 Heterojunction-Enhanced Raman Scattering. J Phys Chem Lett 2019; 10:4038-4044. [PMID: 31265302 DOI: 10.1021/acs.jpclett.9b00972] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Surface-enhanced Raman spectroscopy (SERS), a sensitive analytical technique that has single molecular sensitivity, has attracted continuous attention for both application and academic research. Semiconductor-based substrates with SERS activity present more practical applications, ranging from surface science to biological detection because of their lower cost and better biocompatibility compared with noble metals. However, the SERS performance of most semiconductor-based substrates is not significant. Herein, we propose the concept of semiconductor heterojunction-enhanced Raman scattering and design a vertical nanothickness heterojunction of W18O49/monolayer MoS2. As a result, the Raman signals of analyte Rhodamine 6G are detectable even with an ultralow concentration of 10-9 M on W18O49/monolayer MoS2 substrates. The enhancement factor is around 3.45 × 107. We confirmed from experiments and theory that the coupling of these two semiconductor materials could lead to dramatic enhancement of photoinduced charge-transfer processes, which enables giant heterojunction-enhanced Raman scattering.
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Affiliation(s)
- Mingze Li
- School of Physics , Southeast University , Nanjing 211189 , P.R. China
| | - Xingce Fan
- School of Physics , Southeast University , Nanjing 211189 , P.R. China
| | - Yimeng Gao
- School of Physics , Southeast University , Nanjing 211189 , P.R. China
| | - Teng Qiu
- School of Physics , Southeast University , Nanjing 211189 , P.R. China
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115
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Yin G, Bai S, Tu X, Li Z, Zhang Y, Wang W, Lu J, He D. Highly Sensitive and Stable SERS Substrate Fabricated by Co-sputtering and Atomic Layer Deposition. NANOSCALE RESEARCH LETTERS 2019; 14:168. [PMID: 31104182 PMCID: PMC6525682 DOI: 10.1186/s11671-019-2997-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 04/29/2019] [Indexed: 05/31/2023]
Abstract
In this study, we develop a facile method to fabricate highly sensitive and stable surface-enhanced Raman scattering (SERS) substrate, which is realized by combining co-sputtering with atomic layer deposition technology. To accomplish the SERS substrate preparation, we firstly utilized co-sputtering silver and aluminum on glass slides to form uniform discontinuous Ag film by removing Al later, which acted as SERS active moiety and presented high sensitivity in glycerin detection. After coating an ultrathin TiO2 layer via atomic layer deposition (ALD), the samples could further enhance the Raman signal due to the chemical effect as well as the long-range effect of the enhanced electromagnetic field generated by the encapsulated Ag nanoparticles (NPs). Besides, the coated sample could maintain the significant enhancement in air condition for more than 30 days. The high stability is induced by TiO2 layer, which efficiently prevents Ag NPs from surface oxidation. This highly sensitive and stable SERS substrate might highlight the application of interface state investigation for exploring novel liquid lubricating materials.
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Affiliation(s)
- Guilin Yin
- School of Material Science and Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai, 200240 People’s Republic of China
- National Engineering Research Center for Nanotechnology, No. 28 East Jiangchuan Road, Shanghai, 200241 People’s Republic of China
| | - Shiheng Bai
- School of Material Science and Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai, 200240 People’s Republic of China
- National Engineering Research Center for Nanotechnology, No. 28 East Jiangchuan Road, Shanghai, 200241 People’s Republic of China
| | - Xinglong Tu
- School of Material Science and Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai, 200240 People’s Republic of China
| | - Zheng Li
- School of Material Science and Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai, 200240 People’s Republic of China
- National Engineering Research Center for Nanotechnology, No. 28 East Jiangchuan Road, Shanghai, 200241 People’s Republic of China
| | - Yanpeng Zhang
- School of Material Science and Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai, 200240 People’s Republic of China
- National Engineering Research Center for Nanotechnology, No. 28 East Jiangchuan Road, Shanghai, 200241 People’s Republic of China
| | - Weiming Wang
- School of Mechanical Engineering, Shanghai Jiao Tong University, No.800 Dongchuan Road, Shanghai, 200240 People’s Republic of China
| | - Jing Lu
- National Engineering Research Center for Nanotechnology, No. 28 East Jiangchuan Road, Shanghai, 200241 People’s Republic of China
| | - Dannong He
- School of Material Science and Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Road, Shanghai, 200240 People’s Republic of China
- National Engineering Research Center for Nanotechnology, No. 28 East Jiangchuan Road, Shanghai, 200241 People’s Republic of China
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116
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Luo Z, Ahn J, Qin D. Fabrication of Ag-Pd concave nanocrystals through facet-selective oxidation of Ag atoms. NANOSCALE 2019; 11:6710-6718. [PMID: 30900699 DOI: 10.1039/c9nr01250h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We report the fabrication of Ag-Pd concave nanocrystals by introducing the Pd(ii) precursor into an aqueous suspension of Ag nanocubes in the presence of cetyltrimethylammonium chloride (CTAC) under ambient conditions. Different from the previously reported work that involved the oxidation of Ag and deposition of Pd at random sites on the surface for the generation of Ag-Pd hollow nanocrystals, we demonstrate that the Cl- ions from CTAC can confine the oxidation of Ag atoms to the side faces of a nanocube while the resultant Pd atoms are deposited on the edges in an orthogonal manner. By controlling the amount of the Pd(ii) precursor involved in a synthesis, we can transform Ag nanocubes into Ag-Pd nanocrystals with different degrees of concaveness for the side faces and controllable Pd contents. We characterize the outermost layer of concave surfaces for the as-obtained Ag-Pd nanocrystals by surface-enhanced Raman scattering (SERS) through the use of an isocyanide probe. This facile approach would enable the fabrication of Ag-based concave nanocrystals for applications in plasmonics and catalysis.
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Affiliation(s)
- Zheyu Luo
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
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117
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Hanske C, Hill EH, Vila-Liarte D, González-Rubio G, Matricardi C, Mihi A, Liz-Marzán LM. Solvent-Assisted Self-Assembly of Gold Nanorods into Hierarchically Organized Plasmonic Mesostructures. ACS APPLIED MATERIALS & INTERFACES 2019; 11:11763-11771. [PMID: 30844239 PMCID: PMC6439440 DOI: 10.1021/acsami.9b00334] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 03/07/2019] [Indexed: 05/18/2023]
Abstract
Plasmonic supercrystals and periodically structured arrays comprise a class of materials with unique optical properties that result from the interplay of plasmon resonances, as well as near- and far-field coupling. Controlled synthesis of such hierarchical structures remains a fundamental challenge, as it demands strict control over the assembly morphology, array size, lateral spacing, and macroscale homogeneity. Current fabrication approaches involve complicated multistep procedures lacking scalability and reproducibility, which has hindered the practical application of plasmonic supercrystal arrays. Herein, these challenges are addressed by adding an organic solvent to achieve kinetic control over the template-assisted colloidal assembly of nanoparticles from aqueous dispersion. This method yields highly regular periodic arrays, with feature sizes ranging from less than 200 nm up to tens of microns. A combined experimental/computational approach reveals that the underlying mechanism is a combination of the removal of interfacial surfactant micelles from the particle interface and altered capillary flows. Assessing the efficacy of such square arrays for surface-enhanced Raman scattering spectroscopy, we find that a decrease of the lattice periodicity from 750 nm down to 400 nm boosts the signal by more than an order of magnitude, thereby enabling sensitive detection of analytes, such as the bacterial quorum sensing molecule pyocyanin, even in complex biological media.
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Affiliation(s)
- Christoph Hanske
- CIC biomaGUNE and
Ciber-BBN, Paseo de Miramón
182, 20014 Donostia−San
Sebastián, Spain
- E-mail: (C.H.)
| | - Eric H. Hill
- CIC biomaGUNE and
Ciber-BBN, Paseo de Miramón
182, 20014 Donostia−San
Sebastián, Spain
| | - David Vila-Liarte
- CIC biomaGUNE and
Ciber-BBN, Paseo de Miramón
182, 20014 Donostia−San
Sebastián, Spain
| | | | - Cristiano Matricardi
- Institut de Ciència
de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, 08193 Bellaterra, Catalonia, Spain
| | - Agustín Mihi
- Institut de Ciència
de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, 08193 Bellaterra, Catalonia, Spain
| | - Luis M. Liz-Marzán
- CIC biomaGUNE and
Ciber-BBN, Paseo de Miramón
182, 20014 Donostia−San
Sebastián, Spain
- Ikerbasque, Basque Foundation of Science, 48013 Bilbao, Spain
- E-mail: (L.M.L.-M.)
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118
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Lee SH, Jun BH. Silver Nanoparticles: Synthesis and Application for Nanomedicine. Int J Mol Sci 2019; 20:ijms20040865. [PMID: 30781560 PMCID: PMC6412188 DOI: 10.3390/ijms20040865] [Citation(s) in RCA: 528] [Impact Index Per Article: 105.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 02/10/2019] [Accepted: 02/15/2019] [Indexed: 02/07/2023] Open
Abstract
Over the past few decades, metal nanoparticles less than 100 nm in diameter have made a substantial impact across diverse biomedical applications, such as diagnostic and medical devices, for personalized healthcare practice. In particular, silver nanoparticles (AgNPs) have great potential in a broad range of applications as antimicrobial agents, biomedical device coatings, drug-delivery carriers, imaging probes, and diagnostic and optoelectronic platforms, since they have discrete physical and optical properties and biochemical functionality tailored by diverse size- and shape-controlled AgNPs. In this review, we aimed to present major routes of synthesis of AgNPs, including physical, chemical, and biological synthesis processes, along with discrete physiochemical characteristics of AgNPs. We also discuss the underlying intricate molecular mechanisms behind their plasmonic properties on mono/bimetallic structures, potential cellular/microbial cytotoxicity, and optoelectronic property. Lastly, we conclude this review with a summary of current applications of AgNPs in nanoscience and nanomedicine and discuss their future perspectives in these areas.
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Affiliation(s)
- Sang Hun Lee
- Department of Bioengineering, University of California Berkeley, Berkeley, CA 94720, USA.
| | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology, Konkuk University, 1 Hwayang-dong, Gwanjin-gu, Seoul 143-701, Korea.
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119
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Henry AI, Ueltschi TW, McAnally MO, Van Duyne RP. Spiers Memorial Lecture. Surface-enhanced Raman spectroscopy: from single particle/molecule spectroscopy to ångstrom-scale spatial resolution and femtosecond time resolution. Faraday Discuss 2019; 205:9-30. [PMID: 28906524 DOI: 10.1039/c7fd00181a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Four decades on, surface-enhanced Raman spectroscopy (SERS) continues to be a vibrant field of research that is growing (approximately) exponentially in scope and applicability while pushing at the ultimate limits of sensitivity, spatial resolution, and time resolution. This introductory paper discusses some aspects related to all four of the themes for this Faraday Discussion. First, the wavelength-scanned SERS excitation spectroscopy (WS-SERES) of single nanosphere oligomers (viz., dimers, trimers, etc.), the distance dependence of SERS, the magnitude of the chemical enhancement mechanism, and the progress toward developing surface-enhanced femtosecond stimulated Raman spectroscopy (SE-FSRS) are discussed. Second, our efforts to develop a continuous, minimally invasive, in vivo glucose sensor based on SERS are highlighted. Third, some aspects of our recent work in single molecule SERS and the translation of that effort to ångstrom-scale spatial resolution in ultrahigh vacuum tip-enhanced Raman spectroscopy (UHV-TERS) and single molecule electrochemistry using electrochemical (EC)-TERS will be presented. Finally, we provide an overview of analytical SERS with our viewpoints on SERS substrates, approaches to address the analyte generality problem (i.e. target molecules that do not spontaneously adsorb and/or have Raman cross sections <10-29 cm2 sr-1), SERS for catalysis, and deep UV-SERS.
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Affiliation(s)
- Anne-Isabelle Henry
- Departments of Chemistry, Biomedical Engineering, and Applied Physics, Northwestern University, Evanston, IL 60208-3113, USA.
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120
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Barbara A, Dubois F, Quémerais P. In Situ Identification of Spherical Ag Monomers and Dimers at Zeptomole Adsorbate Concentrations by Surface-Enhanced Raman Scattering Correlation Spectroscopy. ACS OMEGA 2019; 4:2283-2290. [PMID: 31459471 PMCID: PMC6648566 DOI: 10.1021/acsomega.8b03512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 01/17/2019] [Indexed: 06/10/2023]
Abstract
We have developed a bright optical setup, especially optimized for surface-enhanced Raman scattering (SERS) correlation spectroscopy. We show that the brightness of the experiment combined with the correlation approach permits in situ access to the size and shape of the SERS-active aggregates in solution despite a very weak SERS signal of the adsorbed molecules. As a result, we demonstrate that dimers and larger SERS-active aggregates can be identified through the temporal fluctuations of the SERS signal of only a few hundred of adsorbed molecules, that is, at zeptomole adsorbate concentrations. Monomers covered by a monolayer of MBA were also identified. These results open a way for single nanoparticle sensing, for single-molecule SERS-active aggregate characterization, or for quantitative monitoring of functionalization processes on metallic objects.
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121
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Rong Z, Xiao R, Xing S, Xiong G, Yu Z, Wang L, Jia X, Wang K, Cong Y, Wang S. SERS-based lateral flow assay for quantitative detection of C-reactive protein as an early bio-indicator of a radiation-induced inflammatory response in nonhuman primates. Analyst 2019; 143:2115-2121. [PMID: 29648566 DOI: 10.1039/c8an00160j] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In accidental irradiation situations, rapid in-field evaluation of acute radiation syndrome is critical for effective triage and timely medical treatment of irradiated individuals. A surface-enhanced Raman scattering (SERS)-based lateral flow assay was developed for the quantitative detection of C-reactive protein (CRP) as an early bio-indicator of a radiation-induced inflammatory response in nonhuman primates. Raman reporter-embedded gold-core silver-shell nanoparticles with built-in hot spots were synthesized and conjugated with a CRP detection antibody to serve as SERS tags in the lateral flow assay. The proposed SERS-based lateral flow assay can rapidly detect CRP with a limit of detection of 0.01 ng mL-1 and quantitative analysis ability. Furthermore, the assay was applied to evaluate the CRP levels in plasma samples of irradiated nonhuman primates at 0 to 80 h after exposure to sublethal (4 Gy) and lethal (8 Gy) doses of total body irradiation (n = 3 animals per group). The plasma CRP levels increase rapidly within few hours after irradiation. The CRP level peaks are observed at 12 or 24 h after irradiation, with a concentration of 201.30, 386.06 and 475.18 μg mL-1 for the 4 Gy irradiated animals and 197.14, 69.52 and 358.03 μg mL-1 for the 8 Gy irradiated animals. The results indicate the potential application of the proposed SERS-based lateral flow assay to serve as a rapid and accurate point-of-care biodosimetry assay for the quantitative detection of bio-indicators to triage irradiated individuals in the field of a radiation accident.
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Affiliation(s)
- Zhen Rong
- Beijing Institute of Radiation Medicine, Beijing 100850, P. R. China.
| | - Rui Xiao
- Beijing Institute of Radiation Medicine, Beijing 100850, P. R. China.
| | - Shuang Xing
- Beijing Institute of Radiation Medicine, Beijing 100850, P. R. China.
| | - Guolin Xiong
- Beijing Institute of Radiation Medicine, Beijing 100850, P. R. China.
| | - Zuyin Yu
- Beijing Institute of Radiation Medicine, Beijing 100850, P. R. China.
| | - Limei Wang
- Beijing Institute of Radiation Medicine, Beijing 100850, P. R. China.
| | - Xiaofei Jia
- Beijing Institute of Radiation Medicine, Beijing 100850, P. R. China. and College of Life Sciences & Bio-Engineering, Beijing University of Technology, Beijing 100124, P. R. China
| | - Keli Wang
- Beijing Institute of Radiation Medicine, Beijing 100850, P. R. China. and Anhui Medical University, Hefei, Anhui 230032, P. R. China
| | - Yuwen Cong
- Beijing Institute of Radiation Medicine, Beijing 100850, P. R. China.
| | - Shengqi Wang
- Beijing Institute of Radiation Medicine, Beijing 100850, P. R. China.
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122
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Volochanskyi O, Švecová M, Prokopec V. Detection and identification of medically important alkaloids using the surface-enhanced Raman scattering spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 207:143-149. [PMID: 30223248 DOI: 10.1016/j.saa.2018.09.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 09/06/2018] [Accepted: 09/08/2018] [Indexed: 06/08/2023]
Abstract
Currently, trace detection of drugs, medicinal products, psychoactive substances, poisons and other natural or synthetic compounds in the human body has become one of the most important areas of interest in medicine, toxicology and forensic research. Due to the rapid development of nanotechnology, applications in forensic and biological sciences, food industry and art preservation there is an increasing interest in surface-enhanced Raman scattering (SERS) spectroscopy as a technique capable of low detection limits in the analysis of small amounts of studied analytes. In this study, different excitation wavelengths (785 nm and 1064 nm) were used to find the appropriate experimental conditions for the detection and identification of medically significant alkaloids - atropine and pergolide - by means of surface-enhanced Raman scattering spectroscopy. SERS spectra of selected alkaloids were measured in the concentration range 10-3-10-9 mol∙L-1 using large-scaled platinum substrates coated with electrochemically prepared gold or silver SERS-active layers. Identification was based on the assignment of surface-enhanced characteristic vibrational bands using theoretical (DFT) calculations and comparing them with normal (non-enhanced) Raman spectra of pure compounds. All sets of spectral data were subjected to multivariate statistical approach (partial least squares regression) aiming at prediction of alkaloids concentration in developed models and its comparison with experimental results.
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Affiliation(s)
- Oleksandr Volochanskyi
- Department of Analytical Chemistry, Faculty of Chemical Engineering, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Marie Švecová
- Department of Analytical Chemistry, Faculty of Chemical Engineering, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic; Department of Physical Chemistry, Faculty of Chemical Engineering, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic.
| | - Vadym Prokopec
- Department of Analytical Chemistry, Faculty of Chemical Engineering, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
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123
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Niciński K, Witkowska E, Korsak D, Noworyta K, Trzcińska-Danielewicz J, Girstun A, Kamińska A. Photovoltaic cells as a highly efficient system for biomedical and electrochemical surface-enhanced Raman spectroscopy analysis. RSC Adv 2019; 9:576-591. [PMID: 35517626 PMCID: PMC9059484 DOI: 10.1039/c8ra08319c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 12/13/2018] [Indexed: 12/13/2022] Open
Abstract
Surface-enhanced Raman scattering (SERS) has been intensively used recently as a highly sensitive, non-destructive, chemical specific, and label-free technique for a variety of studies. Here, we present a novel SERS substrate for: (i) the standard ultra-trace analysis, (ii) detection of whole microorganisms, and (iii) spectroelectrochemical measurements. The integration of electrochemistry and SERS spectroscopy is a powerful approach for in situ investigation of the structural changes of adsorbed molecules, their redox properties, and for studying the intermediates of the reactions. We have developed a conductive SERS platform based on photovoltaic materials (PV) covered with a thin layer of silver, especially useful in electrochemical SERS analysis. These substrates named Ag/PV presented in this study combine crucial spectroscopic features such as high sensitivity, reproducibility, specificity, and chemical/physical stability. The designed substrates permit the label-free identification and differentiation of cancer cells (renal carcinoma) and pathogens (Escherichia coli and Bacillus subtilis). In addition, the developed SERS platform was adopted as the working electrode in an electrochemical SERS approach for p-aminothiophenol (p-ATP) studies. The capability to monitor in real-time the electrochemical changes spectro-electro-chemically has great potential for broadening the application of SERS.
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Affiliation(s)
- K Niciński
- Institute of Physical Chemistry, Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - E Witkowska
- Institute of Physical Chemistry, Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - D Korsak
- Department of Applied Microbiology, Institute of Microbiology, Faculty of Biology, University of Warsaw Miecznikowa 1 02-096 Warsaw Poland
| | - K Noworyta
- Institute of Physical Chemistry, Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - J Trzcińska-Danielewicz
- Department of Molecular Biology, Institute of Biochemistry, Faculty of Biology, University of Warsaw Miecznikowa 1 02-096 Warsaw Poland
| | - A Girstun
- Department of Molecular Biology, Institute of Biochemistry, Faculty of Biology, University of Warsaw Miecznikowa 1 02-096 Warsaw Poland
| | - A Kamińska
- Institute of Physical Chemistry, Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
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124
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Ren H, Ren X, Huang Z, Wu X. Synergetic light trapping effects in organic solar cells with a patterned semi-transparent electrode. Phys Chem Chem Phys 2019; 21:11306-11312. [DOI: 10.1039/c9cp00581a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have established new dual light trapping structures that improve the electrical and optical properties of OSCs.
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Affiliation(s)
- Hao Ren
- Institute of Physical Science and Information Technology
- Anhui University
- China
- Key Laboratory of Intelligent Computing & Signal Processing
- Ministry of Education
| | - Xingang Ren
- Institute of Physical Science and Information Technology
- Anhui University
- China
- Key Laboratory of Intelligent Computing & Signal Processing
- Ministry of Education
| | - Zhixiang Huang
- Institute of Physical Science and Information Technology
- Anhui University
- China
- Key Laboratory of Intelligent Computing & Signal Processing
- Ministry of Education
| | - Xianliang Wu
- Institute of Physical Science and Information Technology
- Anhui University
- China
- Key Laboratory of Intelligent Computing & Signal Processing
- Ministry of Education
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125
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Mao P, Liu C, Favraud G, Chen Q, Han M, Fratalocchi A, Zhang S. Broadband single molecule SERS detection designed by warped optical spaces. Nat Commun 2018; 9:5428. [PMID: 30575738 PMCID: PMC6303368 DOI: 10.1038/s41467-018-07869-5] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 11/30/2018] [Indexed: 11/20/2022] Open
Abstract
Engineering hotspots is of crucial importance in many applications including energy harvesting, nano-lasers, subwavelength imaging, and biomedical sensing. Surface-enhanced Raman scattering spectroscopy is a key technique to identify analytes that would otherwise be difficult to diagnose. In standard systems, hotspots are realised with nanostructures made by acute tips or narrow gaps. Owing to the low probability for molecules to reach such tiny active regions, high sensitivity is always accompanied by a large preparation time for analyte accumulation which hinders the time response. Inspired by transformation optics, we introduce an approach based on warped spaces to manipulate hotspots, resulting in broadband enhancements in both the magnitude and volume. Experiments for single molecule detection with a fast soaking time are realised in conjunction with broadband response and uniformity. Such engineering could provide a new design platform for a rich manifold of devices, which can benefit from broadband and huge field enhancements. In standard SERS the probability for the molecules to reach tiny hotpot regions is low. Here, the authors introduce an approach based on warped spaces that offers a strategy to manipulate hotspots of metallic nanostructures, resulting in large broadband enhancements in both the magnitude and the volume size.
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Affiliation(s)
- Peng Mao
- School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, United Kingdom.,College of Electronic and Optical Engineering & College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing, 210023, China
| | - Changxu Liu
- School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, United Kingdom
| | - Gael Favraud
- PRIMALIGHT, Faculty of Electrical Engineering, Applied Mathematics and Computational Science, KAUST, Thuwal, 23955-6900, Saudi Arabia
| | - Qiang Chen
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences and Collaborative Innovation Centre of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
| | - Min Han
- National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences and Collaborative Innovation Centre of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Andrea Fratalocchi
- PRIMALIGHT, Faculty of Electrical Engineering, Applied Mathematics and Computational Science, KAUST, Thuwal, 23955-6900, Saudi Arabia.
| | - Shuang Zhang
- School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, United Kingdom.
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126
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Trujillo MJ, Strausser SL, Becca JC, DeJesus JF, Jensen L, Jenkins DM, Camden JP. Using SERS To Understand the Binding of N-Heterocyclic Carbenes to Gold Surfaces. J Phys Chem Lett 2018; 9:6779-6785. [PMID: 30350991 DOI: 10.1021/acs.jpclett.8b02764] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Surface functionalization is an essential component of most applications of noble-metal surfaces. Thiols and amines are traditionally employed to attach molecules to noble-metal surfaces, but they have limitations. A growing body of research, however, suggests that N-heterocyclic carbenes (NHCs) can be readily employed for surface functionalization with superior chemical stability compared with thiols. We demonstrate the power of surface-enhanced Raman scattering combined with theory to present a comprehensive picture of NHC binding to gold surfaces. In particular, we synthesize a library of NHC isotopologues and use surface-enhanced Raman scattering to record the vibrational spectra of these NHCs while bound to gold surfaces. Our experimental data are compared with first-principles theory, yielding numerous new insights into the binding of NHCs to gold surfaces. In addition to these insights, we expect our approach to be a general method for probing the local surface properties of NHC-functionalized surfaces for their expanding use in sensing applications.
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Affiliation(s)
- Michael J Trujillo
- Department of Chemistry and Biochemistry , University of Notre Dame , Notre Dame , Indiana 46556 , United States
| | - Shelby L Strausser
- Department of Chemistry , University of Tennessee , Knoxville , Tennessee 37996 , United States
| | - Jeffrey C Becca
- Department of Chemistry , The Pennsylvania State University , 104 Chemistry Building , University Park , Pennsylvania 16802-4615 , United States
| | - Joseph F DeJesus
- Department of Chemistry , University of Tennessee , Knoxville , Tennessee 37996 , United States
| | - Lasse Jensen
- Department of Chemistry , The Pennsylvania State University , 104 Chemistry Building , University Park , Pennsylvania 16802-4615 , United States
| | - David M Jenkins
- Department of Chemistry , University of Tennessee , Knoxville , Tennessee 37996 , United States
| | - Jon P Camden
- Department of Chemistry and Biochemistry , University of Notre Dame , Notre Dame , Indiana 46556 , United States
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127
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Ansari Z, Saha A, Singha SS, Sen K. Phytomediated generation of Ag, CuO and Ag-Cu nanoparticles for dimethoate sensing. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.08.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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128
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DNA-Assisted Assembly of Gold Nanostructures and Their Induced Optical Properties. NANOMATERIALS 2018; 8:nano8120994. [PMID: 30513752 PMCID: PMC6315397 DOI: 10.3390/nano8120994] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 11/22/2018] [Accepted: 11/22/2018] [Indexed: 12/17/2022]
Abstract
Gold nanocrystals have attracted considerable attention due to their excellent physical and chemical properties and their extensive applications in plasmonics, spectroscopy, biological detection, and nanoelectronics. Gold nanoparticles are able to be readily modified and arranged with DNA materials and protein molecules, as well as viruses. Particularly DNA materials with the advantages endowed by programmability, stability, specificity, and the capability to adapt to functionalization, have become the most promising candidates that are widely utilized for building plenty of discrete gold nanoarchitectures. This review highlights recent advances on the DNA-based assembly of gold nanostructures and especially emphasizes their resulted superior optical properties and principles, including plasmonic extinction, plasmonic chirality, surface enhanced fluorescence (SEF), and surface-enhanced Raman scattering (SERS).
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129
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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] [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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130
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Wang Y, Kang Y, Wang WY, Ding Q, Zhou J, Yang S. Circumventing silver oxidation induced performance degradation of silver surface-enhanced Raman scattering substrates. NANOTECHNOLOGY 2018; 29:414001. [PMID: 30052528 DOI: 10.1088/1361-6528/aad678] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Surface-enhanced Raman scattering (SERS) has been recognized as a promising sensing technique in biomedical/biosensing applications and analytical chemistry. Silver (Ag) nanostructures have the strongest SERS enhancement, but suffer from severe enhancement degradation induced by oxidation. Here, we introduce electrochemical reduction of silver oxide to produce Ag SERS substrates on request to partially circumvent the SERS enhancement degradation problem of Ag SERS substrates. Silver oxide nanostructures were first prepared in pure silver citrate aqueous solutions with controllable morphologies depending on the electrodeposition parameters. The transition process from silver oxide to Ag was investigated by density functional theory calculations. Based on the understanding of the transition mechanism, heating treatment, applying reducing agent, and electrochemical reduction were adopted to transform silver oxide to Ag. Notably, no organic agents were introduced neither in the electrodeposition of silver oxide nor electrochemical transformation of silver oxide to Ag. The electrochemical reduction strategy could produce Ag SERS substrates with a 'clean' surface with outstanding SERS performance in a simple as well as cost and time effective manner. Ag SERS substrates can be used in biomedical/biosensing fields. The approach through electrochemical reduction of silver oxide to generate Ag SERS substrate may push forward practical application process of Ag SERS substrates.
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Affiliation(s)
- Yanling Wang
- Institute for Composites Science Innovation, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
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131
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Silver nanoparticles/activated carbon composite as a facile SERS substrate for highly sensitive detection of endogenous formaldehyde in human urine by catalytic reaction. Talanta 2018; 188:630-636. [DOI: 10.1016/j.talanta.2018.06.040] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 05/22/2018] [Accepted: 06/11/2018] [Indexed: 11/20/2022]
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132
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Chen W, Zhang S, Kang M, Liu W, Ou Z, Li Y, Zhang Y, Guan Z, Xu H. Probing the limits of plasmonic enhancement using a two-dimensional atomic crystal probe. LIGHT, SCIENCE & APPLICATIONS 2018; 7:56. [PMID: 30839623 PMCID: PMC6113320 DOI: 10.1038/s41377-018-0056-3] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 07/10/2018] [Accepted: 07/12/2018] [Indexed: 05/24/2023]
Abstract
Achieving larger electromagnetic enhancement using a nanogap between neighboring metallic nanostructures has been long pursued for boosting light-matter interactions. However, the quantitative probing of this enhancement is hindered by the lack of a reliable experimental method for measuring the local fields within a subnanometer gap. Here, we use layered MoS2 as a two-dimensional atomic crystal probe in nanoparticle-on-mirror nanoantennas to measure the plasmonic enhancement in the gap by quantitative surface-enhanced Raman scattering. Our designs ensure that the probe filled in the gap has a well-defined lattice orientation and thickness, enabling independent extraction of the anisotropic field enhancements. We find that the field enhancement can be safely described by pure classical electromagnetic theory when the gap distance is no <1.24 nm. For a 0.62 nm gap, the probable emergence of quantum mechanical effects renders an average electric field enhancement of 114-fold, 38.4% lower than classical predictions.
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Affiliation(s)
- Wen Chen
- School of Physics and Technology, Center for Nanoscience and Nanotechnology, and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan, 430072 China
| | - Shunping Zhang
- School of Physics and Technology, Center for Nanoscience and Nanotechnology, and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan, 430072 China
| | - Meng Kang
- School of Physics and Technology, Center for Nanoscience and Nanotechnology, and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan, 430072 China
| | - Weikang Liu
- School of Physics and Technology, Center for Nanoscience and Nanotechnology, and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan, 430072 China
| | - Zhenwei Ou
- School of Physics and Technology, Center for Nanoscience and Nanotechnology, and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan, 430072 China
| | - Yang Li
- School of Physics and Technology, Center for Nanoscience and Nanotechnology, and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan, 430072 China
| | - Yexin Zhang
- School of Physics and Technology, Center for Nanoscience and Nanotechnology, and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan, 430072 China
| | - Zhiqiang Guan
- School of Physics and Technology, Center for Nanoscience and Nanotechnology, and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan, 430072 China
| | - Hongxing Xu
- School of Physics and Technology, Center for Nanoscience and Nanotechnology, and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan, 430072 China
- The Institute for Advanced Studies, Wuhan University, Wuhan, 430072 China
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133
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Szymborski T, Witkowska E, Niciński K, Majka Z, Krehlik T, Deskur T, Winkler K, Kamińska A. Steel Wire Mesh as a Thermally Resistant SERS Substrate. NANOMATERIALS 2018; 8:nano8090663. [PMID: 30149680 PMCID: PMC6163328 DOI: 10.3390/nano8090663] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 08/03/2018] [Accepted: 08/23/2018] [Indexed: 01/20/2023]
Abstract
In this paper, we present novel type of Surface-enhanced Raman spectroscopy (SERS) platform, based on stainless steel wire mesh (SSWM) covered with thin silver layer. The stainless steel wire mesh, typically used in chemical engineering industry, is a cheap and versatile substrate for SERS platforms. SSWM consists of multiple steel wires with diameter of tens of micrometers, which gives periodical structure and high stiffness. Moreover, stainless steel provides great resistance towards organic and inorganic solvents and provides excellent heat dissipation. It is worth mentioning that continuous irradiation of the laser beam over the SERS substrate can be a source of significant increase in the local temperature of metallic nanostructures, which can lead to thermal degradation or fragmentation of the adsorbed analyte. Decomposition or fragmentation of the analysed sample usually causea a significant decrease in the intensity of recorded SERS bands, which either leads to false SERS responses or enables the analysis of spectral data. To our knowledge, we have developed for the first time the thermally resistant SERS platform. This type of SERS substrate, termed Ag/SSWM, exhibit high sensitivity (Enhancement Factor (EF) = 106) and reproducibility (Relative Standard Deviation (RSD) of 6.4%) towards detection of p-mercaptobenzoic acid (p-MBA). Besides, Ag/SSWM allows the specific detection and differentiation between Gram-positive and Gram-negative bacterial species: Escherichia coli and Bacillus subtilis in label-free and reproducible manner. The unique properties of designed substrate overcome the limitations associated with photo- and thermal degradation of sensitive bacterial samples. Thus, a distinctive SERS analysis of all kinds of chemical and biological samples at high sensitivity and selectivity can be performed on the developed SERS-active substrate.
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Affiliation(s)
- Tomasz Szymborski
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland.
- Soft Materials Laboratory, Institute of Materials, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.
| | - Evelin Witkowska
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland.
| | - Krzysztof Niciński
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland.
| | - Zuzanna Majka
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland.
| | - Tomasz Krehlik
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland.
| | - Tomiła Deskur
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland.
| | - Katarzyna Winkler
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland.
| | - Agnieszka Kamińska
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, Warsaw 01-224, Poland.
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134
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Lin L, Zhang Q, Li X, Qiu M, Jiang X, Jin W, Gu H, Lei DY, Ye J. Electron Transport Across Plasmonic Molecular Nanogaps Interrogated with Surface-Enhanced Raman Scattering. ACS NANO 2018; 12:6492-6503. [PMID: 29924592 DOI: 10.1021/acsnano.7b08224] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Charge transport plays an important role in defining both far-field and near-field optical response of a plasmonic nanostructure with an ultrasmall built-in nanogap. As the gap size of a gold core-shell nanomatryoshka approaches the sub-nanometer length scale, charge transport may occur and strongly alter the near-field enhancement within the molecule-filled nanogap. In this work, we utilize ultrasensitive surface-enhanced Raman spectroscopy (SERS) to investigate the plasmonic near-field variation induced by the molecular junction conductance-assisted electron transport in gold nanomatryoshkas, termed gap-enhanced Raman tags (GERTs). The GERTs, with interior gaps from 0.7 to 2 nm, are prepared with a wet chemistry method. Our experimental and theoretical studies suggest that the electron transport through the molecular junction influences both far-field and near-field optical properties of the GERTs. In the far-field extinction response, the low-energy gap mode predicted by a classical electromagnetic model (CEM) is strongly quenched and hence unobservable in the experiment, which can be well explained by a quantum-corrected model (QCM). In the near-field SERS response, the optimal gap size for maximum Raman enhancement at the excitation wavelength of 785 nm (633 nm) is about 1.35 nm (1.8 nm). Similarly, these near-field results do not tally with the CEM calculations but agree well with the QCM results where the molecular junction conductance in the nanogap is fully considered. Our study may improve understanding of charge-transport phenomena in ultrasmall plasmonic molecular nanogaps and promote the further development of molecular electronics-based plasmonic nanodevices.
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Affiliation(s)
- Li Lin
- State Key Laboratory of Oncogenes and Related Genes, School of Biomedical Engineering , Shanghai Jiao Tong University , Shanghai 200030 , China
| | - Qiang Zhang
- School of Materials Science and Engineering, Shenzhen Graduate School , Harbin Institute of Technology , Shenzhen 518055 , China
- Department of Applied Physics , The Hong Kong Polytechnic University , 999077 , Hong Kong, China
| | - Xiyao Li
- State Key Laboratory of Oncogenes and Related Genes, School of Biomedical Engineering , Shanghai Jiao Tong University , Shanghai 200030 , China
| | - Meng Qiu
- Department of Electrical Engineering , The Hong Kong Polytechnic University , 999077 , Hong Kong, China
| | - Xin Jiang
- State Key Laboratory of Oncogenes and Related Genes, School of Biomedical Engineering , Shanghai Jiao Tong University , Shanghai 200030 , China
| | - Wei Jin
- Department of Electrical Engineering , The Hong Kong Polytechnic University , 999077 , Hong Kong, China
| | - Hongchen Gu
- State Key Laboratory of Oncogenes and Related Genes, School of Biomedical Engineering , Shanghai Jiao Tong University , Shanghai 200030 , China
| | - Dang Yuan Lei
- Department of Applied Physics , The Hong Kong Polytechnic University , 999077 , Hong Kong, China
- Shenzhen Research Institute , The Hong Kong Polytechnic University , Shenzhen 518057 , China
| | - Jian Ye
- State Key Laboratory of Oncogenes and Related Genes, School of Biomedical Engineering , Shanghai Jiao Tong University , Shanghai 200030 , China
- Shanghai Key Laboratory of Gynecologic Oncology, Ren Ji Hospital, School of Medicine , Shanghai Jiao Tong University , Shanghai 200030 , China
- Shanghai Med-X Engineering Research Center, School of Biomedical Engineering , Shanghai Jiao Tong University , Shanghai 200030 , China
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135
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Hanske C, Sanz-Ortiz MN, Liz-Marzán LM. Silica-Coated Plasmonic Metal Nanoparticles in Action. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1707003. [PMID: 29736945 DOI: 10.1002/adma.201707003] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 01/17/2018] [Indexed: 05/22/2023]
Abstract
Hybrid colloids consisting of noble metal cores and metal oxide shells have been under intense investigation for over two decades and have driven progress in diverse research lines including sensing, medicine, catalysis, and photovoltaics. Consequently, plasmonic core-shell particles have come to play a vital role in a plethora of applications. Here, an overview is provided of recent developments in the design and utilization of the most successful class of such hybrid materials, silica-coated plasmonic metal nanoparticles. Besides summarizing common simple approaches to silica shell growth, special emphasis is put on advanced synthesis routes that either overcome typical limitations of classical methods, such as stability issues and undefined silica porosity, or grant access to particularly sophisticated nanostructures. Hereby, a description is given, how different types of silica can be used to provide noble metal particles with specific functionalities. Finally, applications of such nanocomposites in ultrasensitive analyte detection, theranostics, catalysts, and thin-film solar cells are reviewed.
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Affiliation(s)
- Christoph Hanske
- CIC biomaGUNE and CIBER-BBN, Paseo de Miramón 182, ,20014, Donostia-San Sebastián, Spain
| | - Marta N Sanz-Ortiz
- Centre for Nanostructured Media, School of Mathematics and Physics, Queen's University Belfast, Belfast, BT7 1NN, UK
| | - Luis M Liz-Marzán
- CIC biomaGUNE and CIBER-BBN, Paseo de Miramón 182, ,20014, Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013, Bilbao, Spain
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136
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Wei Y, Pei H, Li L, Zhu Y. The effect of nonlocal dielectric response on the surface-enhanced Raman and fluorescence spectra of molecular systems. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2018; 30:245302. [PMID: 29726841 DOI: 10.1088/1361-648x/aac28d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We present a theoretical study on the influence of the nonlocal dielectric response on surface-enhanced resonant Raman scattering (SERRS) and fluorescence (SEF) spectra of a model molecule confined in the center of a Ag nanoparticle (NP) dimer. In the simulations, the nonlocal dielectric response caused by the electron-hole pair generation in Ag NPs was computed with the d-parameter theory, and the scattering spectra of a model molecule representing the commonly used fluorescent dye rhodamine 6G (R6G) were obtained by density-matrix calculations. The influence of the separation between Ag NP dimers on the damping rate and scattering spectra with and without the nonlocal response were systematically analyzed. The results show that the nonlocal dielectric response is very sensitive to the gap distance of the NP dimers, and it undergoes much faster decay with the increase of the separation than the radiative and energy transfer rates. The Raman and fluorescence peaks as simulated with the nonlocal dielectric response are relative weaker than that without the nonlocal effect for smaller NP separations because the extra decay rates of the nonlocal effect could reduce both the population of the excited state and the interband coherence between the ground and excited states. Our result also indicates that the nonlocal effect is more prominent on the SEF process than the SERRS process.
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Affiliation(s)
- Yong Wei
- 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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137
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Xu X, Ma X, Wang H, Wang Z. Aptamer based SERS detection of Salmonella typhimurium using DNA-assembled gold nanodimers. Mikrochim Acta 2018; 185:325. [PMID: 29896641 DOI: 10.1007/s00604-018-2852-0] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2018] [Accepted: 05/25/2018] [Indexed: 11/26/2022]
Abstract
The authors describe a surface-enhanced Raman scattering (SERS) based aptasensor for Salmonella typhimurium (S. typhimurium). Gold nanoparticles (AuNPs; 35 nm i.d.) were functionalized with the aptamer (ssDNA 1) and used as the capture probe, while smaller (15 nm) AuNPs were modified with a Cy3-labeled complementary sequence (ssDNA 2) and used as the signalling probe. The asymmetric gold nanodimers (AuNDs) were assemblied with the Raman signal probe and the capture probe via hybridization of the complementary ssDNAs. The gap between two nanoparticles is a "hot spot" in which the Raman reporter Cy3 is localized. It experiences a strong enhancement of the electromagnetic field around the particle. After addition of S. typhimurium, it will be bound by the aptamer which therefore is partially dehybridized from its complementary sequence. Hence, Raman intensity drops. Under the optimal experimental conditions, the SERS signal at 1203 cm-1 increases linearly with the logarithm of the number of colonies in the 102 to 107 cfu·mL-1 concentration range, and the limit of detection is 35 cfu·mL-1. The method can be performed within 1 h and was successfully applied to the analysis of spiked milk samples and performed very well and with high specificity. Graphical abstract DNA-assembled asymmetric gold nanodimers (AuNDs) were synthesized and appllied in a SERS-based aptasensor for S. typhimurium. Capture probe was preferentially combined with S. typhimurium and the structure of the AuNDs was destroyed. The "hot spot" vanished partly, this resulting in the decreased Raman intensity of Cy3.
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Affiliation(s)
- Xumin Xu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Xiaoyuan Ma
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, China.
| | - Haitao Wang
- School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian, 116000, China
| | - Zhouping Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
- School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, 214122, China.
- School of Food Science and Technology, National Engineering Research Center of Seafood, Dalian Polytechnic University, Dalian, 116000, China.
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138
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Gu X, Trujillo MJ, Olson JE, Camden JP. SERS Sensors: Recent Developments and a Generalized Classification Scheme Based on the Signal Origin. ANNUAL REVIEW OF ANALYTICAL CHEMISTRY (PALO ALTO, CALIF.) 2018; 11:147-169. [PMID: 29547340 DOI: 10.1146/annurev-anchem-061417-125724] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Owing to its extreme sensitivity and easy execution, surface-enhanced Raman spectroscopy (SERS) now finds application for a wide variety of problems requiring sensitive and targeted analyte detection. This widespread application has prompted a proliferation of different SERS-based sensors, suggesting the need for a framework to classify existing methods and guide the development of new techniques. After a brief discussion of the general SERS modalities, we classify SERS-based sensors according the origin of the signal. Three major categories emerge from this analysis: surface-affinity strategy, SERS-tag strategy, and probe-mediated strategy. For each case, we describe the mechanism of action, give selected examples, and point out general misconceptions to aid the construction of new devices. We hope this review serves as a useful tutorial guide and helps readers to better classify and design practical and effective SERS-based sensors.
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Affiliation(s)
- Xin Gu
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA;
| | - Michael J Trujillo
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA;
| | - Jacob E Olson
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA;
| | - Jon P Camden
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA;
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139
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Šubr M, Procházka M. Polarization- and Angular-Resolved Optical Response of Molecules on Anisotropic Plasmonic Nanostructures. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E418. [PMID: 29890758 PMCID: PMC6027211 DOI: 10.3390/nano8060418] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 05/28/2018] [Accepted: 06/07/2018] [Indexed: 11/17/2022]
Abstract
A sometimes overlooked degree of freedom in the design of many spectroscopic (mainly Raman) experiments involve the choice of experimental geometry and polarization arrangement used. Although these aspects usually play a rather minor role, their neglect may result in a misinterpretation of the experimental results. It is well known that polarization- and/or angular- resolved spectroscopic experiments allow one to classify the symmetry of the vibrations involved or the molecular orientation with respect to a smooth surface. However, very low detection limits in surface-enhancing spectroscopic techniques are often accompanied by a complete or partial loss of this detailed information. In this review, we will try to elucidate the extent to which this approach can be generalized for molecules adsorbed on plasmonic nanostructures. We will provide a detailed summary of the state-of-the-art experimental findings for a range of plasmonic platforms used in the last ~ 15 years. Possible implications on the design of plasmon-based molecular sensors for maximum signal enhancement will also be discussed.
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Affiliation(s)
- Martin Šubr
- Faculty of Mathematics and Physics, Institute of Physics, Charles University, 121 16 Prague 2, Czech Republic.
| | - Marek Procházka
- Faculty of Mathematics and Physics, Institute of Physics, Charles University, 121 16 Prague 2, Czech Republic.
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140
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Pinheiro PC, Daniel-da-Silva AL, Nogueira HIS, Trindade T. Functionalized Inorganic Nanoparticles for Magnetic Separation and SERS Detection of Water Pollutants. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800132] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Paula C. Pinheiro
- Department of Chemistry-CICECO; University of Aveiro; 3810-193 Aveiro Portugal
| | | | | | - Tito Trindade
- Department of Chemistry-CICECO; University of Aveiro; 3810-193 Aveiro Portugal
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141
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Shang Y, Shi J, Liu H, Liu X, Wang ZG, Ding B. A bumpy gold nanostructure exhibiting DNA-engineered stimuli-responsive SERS signals. NANOSCALE 2018; 10:9455-9459. [PMID: 29749418 DOI: 10.1039/c8nr00986d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We present a SERS-active gold nanostructure with built-in electromagnetic hotspots formed by densely packed gold nanoparticles on a gold nanorod. Cy3 labeled stimuli-responsive DNA motifs were introduced to the SERS-active nanostructure. The SERS signals can be switched ON and OFF reversibly in response to external stimuli (pH, metal ions or organic molecules).
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Affiliation(s)
- Yingxu Shang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P.R.China.
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142
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Lu YW, Li LY, Liu JF. Influence of Surface Roughness on Strong Light-Matter Interaction of a Quantum Emitter-Metallic Nanoparticle System. Sci Rep 2018; 8:7115. [PMID: 29740123 PMCID: PMC5940830 DOI: 10.1038/s41598-018-25584-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 04/24/2018] [Indexed: 11/22/2022] Open
Abstract
We investigate the quantum optical properties of strong light-matter interaction between a quantum emitter and a metallic nanoparticle beyond idealized structures with a smooth surface. Based on the local coupling strength and macroscopic Green’s function, we derived an exact quantum optics approach to obtain the field enhancement and light-emission spectrum of a quantum emitter. Numerical simulations show that the surface roughness has a greater effect on the near-field than on the far-field, and slightly increases the vacuum Rabi splitting on average. Further, we verified that the near-field enhancement is mainly determined by the surface features of hot-spot area.
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Affiliation(s)
- Yu-Wei Lu
- College of Electronic Engineering, South China Agricultural University, Guangzhou, 510642, China.,School of Physics, Sun Yat-sen University, Guangzhou, 510275, China
| | - Ling-Yan Li
- College of Electronic Engineering, South China Agricultural University, Guangzhou, 510642, China
| | - Jing-Feng Liu
- College of Electronic Engineering, South China Agricultural University, Guangzhou, 510642, China.
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143
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Li Y, Wei Q, Ma F, Li X, Liu F, Zhou M. Surface-enhanced Raman nanoparticles for tumor theranostics applications. Acta Pharm Sin B 2018; 8:349-359. [PMID: 29881674 PMCID: PMC5989827 DOI: 10.1016/j.apsb.2018.03.007] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 03/07/2018] [Accepted: 03/14/2018] [Indexed: 02/07/2023] Open
Abstract
Raman spectroscopy, amplified by surface-enhanced Raman scattering (SERS) nanoparticles, can provide an in vivo imaging modality due to its high molecular specificity, high sensitivity, and negligible autofluorescence. The basis, composition, and methodologies developed for SERS nanoparticles are herein described. The research hotspots that are the focus in this paper are tumor imaging-guided theranostics and biosensing. The next breakthrough may be the development of biocompatible SERS nanoparticles and spectroscopic devices for clinical applications.
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Affiliation(s)
- Yangyang Li
- Department of Nuclear Medicine & Key Laboratory of Cancer Prevention and Intervention, National Ministry of Education, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
- Institute of Translational Medicine, Zhejiang University, Hangzhou 310009, China
| | - Qiaolin Wei
- Department of Nuclear Medicine & Key Laboratory of Cancer Prevention and Intervention, National Ministry of Education, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
- Institute of Translational Medicine, Zhejiang University, Hangzhou 310009, China
| | - Fei Ma
- Department of Nuclear Medicine & Key Laboratory of Cancer Prevention and Intervention, National Ministry of Education, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
- Institute of Translational Medicine, Zhejiang University, Hangzhou 310009, China
| | - Xin Li
- Department of Interventional Radiology, Chinese PLA General Hospital, Beijing 100853, China
| | - Fengyong Liu
- Department of Interventional Radiology, Chinese PLA General Hospital, Beijing 100853, China
| | - Min Zhou
- Department of Nuclear Medicine & Key Laboratory of Cancer Prevention and Intervention, National Ministry of Education, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
- Institute of Translational Medicine, Zhejiang University, Hangzhou 310009, China
- State Key Laboratory of Modern Optical Instrumentations, Zhejiang University, Hangzhou 310058, China
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144
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Li M, Qiu Y, Fan C, Cui K, Zhang Y, Xiao Z. Design of SERS nanoprobes for Raman imaging: materials, critical factors and architectures. Acta Pharm Sin B 2018; 8:381-389. [PMID: 29881677 PMCID: PMC5989826 DOI: 10.1016/j.apsb.2018.01.010] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 12/26/2017] [Accepted: 01/18/2018] [Indexed: 02/06/2023] Open
Abstract
Raman imaging yields high specificity and sensitivity when compared to other imaging modalities, mainly due to its fingerprint signature. However, intrinsic Raman signals are weak, thus limiting medical applications of Raman imaging. By adsorbing Raman molecules onto specific nanostructures such as noble metals, Raman signals can be significantly enhanced, termed surface-enhanced Raman scattering (SERS). Recent years have witnessed great interest in the development of SERS nanoprobes for Raman imaging. Rationally designed SERS nanoprobes have greatly enhanced Raman signals by several orders of magnitude, thus showing great potential for biomedical applications. In this review we elaborate on recent progress in design strategies with emphasis on material properties, modifying factors, and structural parameters.
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Affiliation(s)
- Mingwang Li
- Department of Pharmacology and Chemical Biology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
- Translational Medicine Collaborative Innovation Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Yuanyuan Qiu
- Department of Pharmacology and Chemical Biology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
- Translational Medicine Collaborative Innovation Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Chenchen Fan
- Department of Pharmacology and Chemical Biology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
- Translational Medicine Collaborative Innovation Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Kai Cui
- Department of Pharmacology and Chemical Biology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
- Translational Medicine Collaborative Innovation Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Yongming Zhang
- Department of Pharmacology and Chemical Biology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
- Translational Medicine Collaborative Innovation Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Zeyu Xiao
- Department of Pharmacology and Chemical Biology, Institute of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
- Translational Medicine Collaborative Innovation Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
- Collaborative Innovation Center of Systems Biomedicine, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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145
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Tang F, Boutami S, Adam PM. Effect of Metallic Nanoparticles on Improving the Detection Capacity of a Micro-SERS Sensor Created by the Hybrid Waveguide of Metallic Slots and Dielectric Strips. ACS OMEGA 2018; 3:4017-4026. [PMID: 31458638 PMCID: PMC6641387 DOI: 10.1021/acsomega.7b02020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 02/19/2018] [Indexed: 05/27/2023]
Abstract
The enhancement factor (EF) of surface-enhanced Raman scattering (SERS) mainly depends on the electrical field intensity of surface plasmons in the place of Raman-active molecules. Because of this dependence, the Raman detection sensitivity is much higher with molecules in a small metallic gap than near a single metallic surface because of the intense local electric field resulting from the interaction between metallic objects. In this study, we investigate the SERS detection capacity improved by metallic nanoparticles in a micro-SERS sensor made of a metallic slot and a dielectric strip using the three-dimensional finite-difference time domain method. We calculated the field and charge distributions in the metallic sphere-slot junction to discuss the electromagnetic interaction between the in-sphere localized surface plasmon and the in-slot surface plasmon polariton. After that, the EF dependence of the sensor on the in-slot particle's position, size, shape, and number is demonstrated and discussed to show the strategy of optimizing the SERS detection capacity. It follows the rule that a strong enhancement always appears in a small metallic gap due to the strong field confinement. We show that the averaging SERS enhancement factor around the particle can be increased by 105 times, compared to the averaging EF in the slot without metallic nanoparticles that is reported in our previous work, reaching 106 (all factors in this study are obtained by the fourth power of the division of the local plasmonic field E Loc to the maximum electric value of the incident light E Inc(max)) and at some single points, we have a factor as high as 1010, which is enough to detect a single molecule. With metallic nanoparticles, the micro-SERS sensor can be developed into a highly sensitive tool for the portable and stable Raman detection of molecules or markers in pharmacology, biology, etc.
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Affiliation(s)
- Feng Tang
- Département
de Physique, Mécanique, Matériaux et Nanotechnologies
(P2MN), Université de Technologie
de Troyes, 12 rue Marie Curie, 10004 Troyes, France
| | - Salim Boutami
- Université
Grenoble Alpes, CEA, LETI, 17 rue des martyrs, 38054 Grenoble, France
| | - Pierre-Michel Adam
- Département
de Physique, Mécanique, Matériaux et Nanotechnologies
(P2MN), Université de Technologie
de Troyes, 12 rue Marie Curie, 10004 Troyes, France
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146
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Zong C, Xu M, Xu LJ, Wei T, Ma X, Zheng XS, Hu R, Ren B. Surface-Enhanced Raman Spectroscopy for Bioanalysis: Reliability and Challenges. Chem Rev 2018; 118:4946-4980. [PMID: 29638112 DOI: 10.1021/acs.chemrev.7b00668] [Citation(s) in RCA: 869] [Impact Index Per Article: 144.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Surface-enhanced Raman spectroscopy (SERS) inherits the rich chemical fingerprint information on Raman spectroscopy and gains sensitivity by plasmon-enhanced excitation and scattering. In particular, most Raman peaks have a narrow width suitable for multiplex analysis, and the measurements can be conveniently made under ambient and aqueous conditions. These merits make SERS a very promising technique for studying complex biological systems, and SERS has attracted increasing interest in biorelated analysis. However, there are still great challenges that need to be addressed until it can be widely accepted by the biorelated communities, answer interesting biological questions, and solve fatal clinical problems. SERS applications in bioanalysis involve the complex interactions of plasmonic nanomaterials with biological systems and their environments. The reliability becomes the key issue of bioanalytical SERS in order to extract meaningful information from SERS data. This review provides a comprehensive overview of bioanalytical SERS with the main focus on the reliability issue. We first introduce the mechanism of SERS to guide the design of reliable SERS experiments with high detection sensitivity. We then introduce the current understanding of the interaction of nanomaterials with biological systems, mainly living cells, to guide the design of functionalized SERS nanoparticles for target detection. We further introduce the current status of label-free (direct) and labeled (indirect) SERS detections, for systems from biomolecules, to pathogens, to living cells, and we discuss the potential interferences from experimental design, measurement conditions, and data analysis. In the end, we give an outlook of the key challenges in bioanalytical SERS, including reproducibility, sensitivity, and spatial and time resolution.
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Affiliation(s)
- Cheng Zong
- State Key Laboratory of Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China
| | - Mengxi Xu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China
| | - Li-Jia Xu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China
| | - Ting Wei
- State Key Laboratory of Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China
| | - Xin Ma
- State Key Laboratory of Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China
| | - Xiao-Shan Zheng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China
| | - Ren Hu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China
| | - Bin Ren
- State Key Laboratory of Physical Chemistry of Solid Surfaces, MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , China
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147
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Morzan UN, Alonso de Armiño DJ, Foglia NO, Ramírez F, González Lebrero MC, Scherlis DA, Estrin DA. Spectroscopy in Complex Environments from QM–MM Simulations. Chem Rev 2018; 118:4071-4113. [DOI: 10.1021/acs.chemrev.8b00026] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Uriel N. Morzan
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
| | - Diego J. Alonso de Armiño
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
| | - Nicolás O. Foglia
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
| | - Francisco Ramírez
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
| | - Mariano C. González Lebrero
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
| | - Damián A. Scherlis
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
| | - Darío A. Estrin
- Departamento de Química Inorgánica, Analítica y Química Física/INQUIMAE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
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148
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Lu H, Zhu L, Zhang C, Chen K, Cui Y. Mixing Assisted “Hot Spots” Occupying SERS Strategy for Highly Sensitive In Situ Study. Anal Chem 2018. [DOI: 10.1021/acs.analchem.7b04929] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Hui Lu
- Advanced Photonics Center, Southeast University, Nanjing, Jiangsu 210096, China
| | - Li Zhu
- Advanced Photonics Center, Southeast University, Nanjing, Jiangsu 210096, China
| | - Chuanlong Zhang
- Advanced Photonics Center, Southeast University, Nanjing, Jiangsu 210096, China
| | - Kexiang Chen
- Advanced Photonics Center, Southeast University, Nanjing, Jiangsu 210096, China
| | - Yiping Cui
- Advanced Photonics Center, Southeast University, Nanjing, Jiangsu 210096, China
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149
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Zhang G, Chen L, Fu X, Wang H. Cellulose Microfiber-Supported TiO2@Ag Nanocomposites: A Dual-Functional Platform for Photocatalysis and in Situ Reaction Monitoring. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b00006] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guolin Zhang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Long Chen
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Xiaoqi Fu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
| | - Hui Wang
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
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150
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Witkowska E, Jagielski T, Kamińska A. Genus- and species-level identification of dermatophyte fungi by surface-enhanced Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 192:285-290. [PMID: 29156315 DOI: 10.1016/j.saa.2017.11.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 10/16/2017] [Accepted: 11/02/2017] [Indexed: 06/07/2023]
Abstract
This paper demonstrates that surface-enhanced Raman spectroscopy (SERS) coupled with principal component analysis (PCA) can serve as a fast and reliable technique for detection and identification of dermatophyte fungi at both genus and species level. Dermatophyte infections are the most common mycotic diseases worldwide, affecting a quarter of the human population. Currently, there is no optimal method for detection and identification of fungal diseases, as each has certain limitations. Here, for the first time, we have achieved with a high accuracy, differentiation of dermatophytes representing three major genera, i.e. Trichophyton, Microsporum, and Epidermophyton. Two first principal components (PC), namely PC-1 and PC-2, gave together 97% of total variance. Additionally, species-level identification within the Trichophyton genus has been performed. PC-1 and PC-2, which are the most diagnostically significant, explain 98% of the variance in the data obtained from spectra of: Trichophyton rubrum, Trichophyton menatgrophytes, Trichophyton interdigitale and Trichophyton tonsurans. This study offers a new diagnostic approach for the identification of dermatophytes. Being fast, reliable and cost-effective, it has the potential to be incorporated in the clinical practice to improve diagnostics of medically important fungi.
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Affiliation(s)
- Evelin Witkowska
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Tomasz Jagielski
- University of Warsaw, Faculty of Biology, Institute of Microbiology, Department of Applied Microbiology, I. Miecznikowa 1, 02-096 Warsaw, Poland
| | - Agnieszka Kamińska
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
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