1
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Tan M, Wang Y, Ji Y, Mei R, Zhao X, Song J, You J, Chen L, Wang X. Inflammatory bowel disease alters in vivo distribution of orally administrated nanoparticles: Revealing via SERS tag labeling technique. Talanta 2024; 275:126172. [PMID: 38692050 DOI: 10.1016/j.talanta.2024.126172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2024] [Revised: 04/18/2024] [Accepted: 04/25/2024] [Indexed: 05/03/2024]
Abstract
Nanoparticles (NPs) could be uptake orally and exposed to digestive tract through various sources such as particulate pollutant, nanomedicine and food additive. Inflammatory bowel disease (IBD), as a global disease, induced disruption of the intestinal mucosal barrier and thus altered in vivo distribution of NPs as a possible consequence. However, related information was relatively scarce. Herein, in vivo distribution of typical silica (SiO2) and titania (TiO2) NPs was investigated in healthy and IBD models at cell and animal levels via a surface-enhanced Raman scattering (SERS) tag labeling technique. The labeled NPs were composed of gold SERS tag core and SiO2 (or TiO2) shell, demonstrating sensitive and characteristic SERS signals ideal to trace the NPs in vivo. Cell SERS mapping revealed that protein corona from IBD intestinal fluid decreased uptake of NPs by lipopolysaccharide-induced RAW264.7 cells compared with normal intestinal fluid protein corona. SERS signal detection combined with inductively coupled plasma mass spectrometry (ICP-MS) analysis of mouse tissues (heart, liver, spleen, lung and kidney) indicated that both NPs tended to accumulate in lung specifically after oral administration for IBD mouse (6 out of 20 mice for SiO2 and 4 out of 16 mice for TiO2 were detected in lung). Comparatively, no NP signals were detected in all tissues from healthy mice. These findings suggested that there might be a greater risk associated with the oral uptake of NPs in IBD patients due to altered in vivo distribution of NPs.
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Affiliation(s)
- Mingyue Tan
- School of Pharmacy, Binzhou Medical University, Yantai, 264003, China
| | - Yunqing Wang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China.
| | - Yunxia Ji
- School of Pharmacy, Binzhou Medical University, Yantai, 264003, China
| | - Rongchao Mei
- School of Pharmacy, Binzhou Medical University, Yantai, 264003, China
| | - Xizhen Zhao
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jie Song
- School of Pharmacy, Binzhou Medical University, Yantai, 264003, China
| | - Jinmao You
- College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, 312000, China
| | - Lingxin Chen
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; Laboratory for Marine Biology and Biotechnology, Qingdao Marine Science and Technology Center, Qingdao, 266237, China; College of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, 312000, China.
| | - Xiaoyan Wang
- School of Pharmacy, Binzhou Medical University, Yantai, 264003, China.
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Xu X, Yue S, Tu K, Yuan B, Bi S, Yu J, Qiu H, Zhang H, Zhang L, Wu HF, Chen XJ, Zhao S, Zhang W, Zhang JN, Jiang LP, Zhang JR, Zhu JJ. Multi-Shell Nanourchin-Integrated Dual Mode Lateral Flow Immunoassay for Sensitive and Rapid Detection of Clinical Cardiac Myosin-Binding Protein C. Anal Chem 2024. [PMID: 38989993 DOI: 10.1021/acs.analchem.4c01514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2024]
Abstract
Cardiac myosin-binding protein C (cMyBP-C) is a novel cardiac marker of acute myocardial infarction (AMI) and acute cardiac injuries (ACI). Construction of point-of-care testing techniques capable of sensing cMyBP-C with high sensitivity and precision is urgently needed. Herein, we synthesized an Au@NGQDs@Au/Ag multi-shell nanoUrchins (MSNUs), and then applied it in a colorimetric/SERS dual-mode immunoassay for detection of cMyBP-C. The MSNUs displayed superior stability, colorimetric brightness, and SERS enhancement ability with an enhanced factor of 5.4 × 109, which were beneficial to improve the detection capability of test strips. The developed MSNU-based test strips can achieve an ultrasensitive immunochromatographic assay of cMyBP-C in both colorimetric and SERS modes with the limits of detection as low as 19.3 and 0.77 pg/mL, respectively. Strikingly, this strip was successfully applied to analyze actual plasma samples with significantly better sensitivity, negative predictive value, and accuracy than commercially available gold test strips. Notably, this method possessed a wide range of application scenarios via combining with a color recognizer application named Color Grab on the smartphone, which can meet various needs of different users. Overall, our MSNU-based test strip as a mobile health monitoring tool shows excellent sensitivity, reproducibility, and rapid detection of the cMyBP-C, which holds great potential for the early clinic diagnosis of AMI and ACI.
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Affiliation(s)
- Xuan Xu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Shuzhen Yue
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Keke Tu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Baozhen Yuan
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Sai Bi
- College of Chemistry and Chemical Engineering, Key Laboratory of Shandong Provincial Universities for Functional Molecules and Materials, Qingdao University, Qingdao 266071, P. R. China
| | - Jinjin Yu
- Nanjing Bottests Biotech CO., LTD, Nanjing 211112, P. R. China
| | - Hui Qiu
- Nanjing Bottests Biotech CO., LTD, Nanjing 211112, P. R. China
| | - Haotian Zhang
- Nanjing Bottests Biotech CO., LTD, Nanjing 211112, P. R. China
| | - Lei Zhang
- Nanjing Bottests Biotech CO., LTD, Nanjing 211112, P. R. China
| | - Heng-Fang Wu
- Institute of Cardiovascular Disease, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, P. R. China
| | - Xiang-Jian Chen
- Institute of Cardiovascular Disease, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, P. R. China
| | - Sheng Zhao
- Institute of Cardiovascular Disease, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, P. R. China
| | - Wei Zhang
- Institute of Cardiovascular Disease, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, P. R. China
| | - Ji-Nan Zhang
- Institute of Cardiovascular Disease, First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, P. R. China
| | - Li-Ping Jiang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Jian-Rong Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
| | - Jun-Jie Zhu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
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Hajfathalian M, Mossburg KJ, Radaic A, Woo KE, Jonnalagadda P, Kapila Y, Bollyky PL, Cormode DP. A review of recent advances in the use of complex metal nanostructures for biomedical applications from diagnosis to treatment. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2024; 16:e1959. [PMID: 38711134 PMCID: PMC11114100 DOI: 10.1002/wnan.1959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 03/31/2024] [Accepted: 04/01/2024] [Indexed: 05/08/2024]
Abstract
Complex metal nanostructures represent an exceptional category of materials characterized by distinct morphologies and physicochemical properties. Nanostructures with shape anisotropies, such as nanorods, nanostars, nanocages, and nanoprisms, are particularly appealing due to their tunable surface plasmon resonances, controllable surface chemistries, and effective targeting capabilities. These complex nanostructures can absorb light in the near-infrared, enabling noteworthy applications in nanomedicine, molecular imaging, and biology. The engineering of targeting abilities through surface modifications involving ligands, antibodies, peptides, and other agents potentiates their effects. Recent years have witnessed the development of innovative structures with diverse compositions, expanding their applications in biomedicine. These applications encompass targeted imaging, surface-enhanced Raman spectroscopy, near-infrared II imaging, catalytic therapy, photothermal therapy, and cancer treatment. This review seeks to provide the nanomedicine community with a thorough and informative overview of the evolving landscape of complex metal nanoparticle research, with a specific emphasis on their roles in imaging, cancer therapy, infectious diseases, and biofilm treatment. This article is categorized under: Diagnostic Tools > In Vivo Nanodiagnostics and Imaging Therapeutic Approaches and Drug Discovery > Nanomedicine for Infectious Disease Diagnostic Tools > Diagnostic Nanodevices.
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Affiliation(s)
- Maryam Hajfathalian
- Department of Biomedical Engineering, New Jersey Institute of Technology, University Heights, Newark, NJ 07102
- Division of Infectious Diseases, School of Medicine, Stanford University, Stanford, CA 94305
| | - Katherine J. Mossburg
- Department of Radiology, University of Pennsylvania, 3400 Spruce Street, 1 Silverstein, Philadelphia, Pennsylvania 19104, United States
| | - Allan Radaic
- School of Dentistry, University of California Los Angeles
| | - Katherine E. Woo
- Division of Infectious Diseases, School of Medicine, Stanford University, Stanford, CA 94305
| | - Pallavi Jonnalagadda
- Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Yvonne Kapila
- School of Dentistry, University of California Los Angeles
| | - Paul L. Bollyky
- Division of Infectious Diseases, Department of Medicine, Stanford University
| | - David P. Cormode
- Department of Radiology, Department of Bioengineering, University of Pennsylvania
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Hao R, Deng Y, Fang J, Zhao D. Three-Dimensionally Nanometallic Superstructure Synthesized via a Single-Particle Soft-Enveloping Strategy. NANO LETTERS 2024; 24:4554-4561. [PMID: 38573122 DOI: 10.1021/acs.nanolett.4c00608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
Three-dimensionally (3D) integrated metallic nanomaterials composed of two or more different types of nanostructures make up a class of advanced materials due to the multidimensional and synergistic effects between different components. However, designing and synthesizing intricate, well-defined metallic 3D nanomaterials remain great challenges. Here, a novel single-particle soft-enveloping strategy using a core-shell Au NP@mSiO2 particle as a template was proposed to synthesize 3D nanomaterials, namely, a Au nanoparticle@center-radial nanorod-Au-Pt nanoparticle (Au NP@NR-NP-Pt NP) superstructure. Taking advantage of the excellent plasmonic properties of Au NP@NR-NP by the synergistic plasmonic coupling of the outer Au NPs and inner Au nanorods, we can enhance the catalytic performance for 4-nitrophenol hydrogenation using Au NP@NR-NP-Pt NP as a photocatalyst with plasmon-excited hot electrons from Au NP@NR-NP under light irradiation, which is 2.76 times higher than in the dark. This process opens a door for the design of a new generation of 3D metallic nanomaterials for different fields.
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Affiliation(s)
- Rui Hao
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P. R. China
| | - Yonghui Deng
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China
| | - Jixiang Fang
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P. R. China
| | - Dongyuan Zhao
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China
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Li J, Guan R, Wuethrich A, Yan M, Cheng J, Liu G, Zhan J, Trau M, Sun Y. High Accuracy of Clinical Verification of Electrohydrodynamic-Driven Nanobox-on-Mirror Platform for Molecular Identification of Respiratory Viruses. Anal Chem 2024; 96:4495-4504. [PMID: 38445954 DOI: 10.1021/acs.analchem.3c05120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
The molecular detection of multiple respiratory viruses provides evidence for the rational use of drugs and effective health management. Herein, we developed and tested the clinical performance of an electrohydrodynamic-driven nanobox-on-mirror platform (E-NoM) for the parallel, accurate, and sensitive detection of four respiratory viral antigens. The E-NoM platform uses gold-silver alloy nanoboxes as the core material with the deposition of a silver layer as a shell on the core surfaces to amplify and enable a reproducible Raman signal readout that facilitates accurate detection. Additionally, the E-NoM platform employs gold microelectrode arrays as the mirror with electrohydrodynamics to manipulate the fluid flow and enhance molecular interactions for an improved biosensing response. The presence of viral antigens binds the nanobox-based core-shell nanostructure on the gold microelectrode and creates the nanocavity with extremely strong "hot spots" to benefit sensitive analysis. Significantly, in a large clinical cohort with 227 patients, the designed E-NoM platform demonstrates the capability of screening respiratory infection with achieved clinical specificity, sensitivity, and accuracy of 100.0, 96.48, and 96.91%, respectively. It is anticipated that the E-NoM platform can find a position in clinical usage for respiratory disease diagnosis.
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Affiliation(s)
- Junrong Li
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Rui Guan
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Alain Wuethrich
- Centre for Personalized Nanomedicine, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Mingzhe Yan
- Wuhan Jinyintan Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430023, P. R. China
| | - Jing Cheng
- School of Public Health, Wuhan University of Science and Technology, Wuhan 430072, P. R. China
| | - Guorong Liu
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Jianbo Zhan
- Institute of Health Inspection and Testing Hubei Provincial Center for Disease Control and Prevention, Wuhan 430072, P. R. China
| | - Matt Trau
- Centre for Personalized Nanomedicine, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Yao Sun
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
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Zeng MH, Yao QH, Chen LM, Zhang C, Jin JW, Ye TX, Chen XM, Guo ZY, Chen X. Anti-galvanic reaction induced interfacial engineering to reconstruct ternary colloid satellite platform for exceptionally high-performance redox-responsive sensor. Anal Chim Acta 2024; 1288:342093. [PMID: 38220267 DOI: 10.1016/j.aca.2023.342093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/30/2023] [Accepted: 11/29/2023] [Indexed: 01/16/2024]
Abstract
The anti-galvanic reaction (AGR), which is a classic galvanic reaction (GR) with an opposite effect, is a unique phenomenon associated with the quantum size effect. This reaction involves the interaction between metal ions and nanoclusters, offering opportunities to create well-defined nanomaterials and diverse reductive behavior. In hence, in our work, we utilize the AGR to generate gold (Au), silver (Ag), and copper (Cu) satellite nanoclusters which have superior electromagnetic properties for Surface-enhanced Raman spectroscopy (SERS) sensor. As the AGR process, weak oxidant Cu2+ is selected to etched matrix Au@Ag NPs, reduced to Cu(0) or Cu(1) and generated the ultrasmall metal nanoparticles (Ag). To facilitate the AGR, we introduce the nucleophilic thiol 4-mercaptopyridine (4-Mpy) to bridge the metal ions or ultrasmall metal nanoparticles to reconstruct the satellite nanoclusters. These experimental displays that the AGR based biosensors has highly sensitivity for reductive molecule glucose. The liner ranges from 1 mmol/L to 1 nmol/L and alongs with a correlation coefficient and detection limit (LOD) of 0.999 and 0.14 nmol/L. Moreover, the AGR based biosensors exhibits remarkable stability and high repeatability with RSD 1.3 %. The food samples are tested to further investigate the accuracy and reliability of the method, which provides a novel and effective SERS method for the reduction molecules detection.
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Affiliation(s)
- Mei-Huang Zeng
- Institute of Analytical Technology and Smart Instruments and Colleague of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, 361024, China; College of Ocean Food and Biological Engineering, Jimei University, Xiamen, 361021, China
| | - Qiu-Hong Yao
- Institute of Analytical Technology and Smart Instruments and Colleague of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, 361024, China; Xiamen Environmental Monitoring Engineering Technology Research Center, China
| | - Lin-Min Chen
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, 361021, China
| | - Chen Zhang
- Institute of Analytical Technology and Smart Instruments and Colleague of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, 361024, China; Xiamen Environmental Monitoring Engineering Technology Research Center, China
| | - Jing-Wen Jin
- Institute of Analytical Technology and Smart Instruments and Colleague of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, 361024, China; Xiamen Environmental Monitoring Engineering Technology Research Center, China
| | - Ting-Xiu Ye
- College of Pharmacy, Xiamen Medicine College, Xiamen, 361005, China
| | - Xiao-Mei Chen
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, 361021, China
| | - Zhi-Yong Guo
- Institute of Analytical Technology and Smart Instruments and Colleague of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, 361024, China; Xiamen Environmental Monitoring Engineering Technology Research Center, China.
| | - Xi Chen
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361005, China.
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Qin F, Liu R, Wu Q, Wang S, Liu F, Wei Q, Xu J, Luo Z. Fabrication of Ag-CaCO 3 Nanocomposites for SERS Detection of Forchlorfenuron. Molecules 2023; 28:6194. [PMID: 37687023 PMCID: PMC10489000 DOI: 10.3390/molecules28176194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/23/2023] [Accepted: 08/14/2023] [Indexed: 09/10/2023] Open
Abstract
In this study, Ag-CaCO3 nanocomposites were synthesized using silver nitrate as the precursor solution based on calcium carbonate nanoparticles (CaCO3 NPs). The synthesis involved the reaction of calcium lignosulphonate and sodium bicarbonate. The properties of Ag-CaCO3 nanocomposites were studied by various technologies, including an ultraviolet-visible spectrophotometer, a transmission electron microscope, and a Raman spectrometer. The results showed that Ag-CaCO3 nanocomposites exhibited a maximum UV absorption peak at 430 nm, the surface-enhanced Raman spectroscopy (SERS) activity of Ag-CaCO3 nanocomposites was evaluated using mercaptobenzoic acid (MBA) as the marker molecule, resulting in an enhancement factor of 6.5 × 104. Additionally, Ag-CaCO3 nanocomposites were utilized for the detection of forchlorfenuron. The results demonstrated a linear relationship in the concentration range of 0.01 mg/mL to 2 mg/mL, described by the equation y = 290.02x + 1598.8. The correlation coefficient was calculated to be 0.9772, and the limit of detection (LOD) was determined to be 0.001 mg/mL. These findings highlight the relatively high SERS activity of Ag-CaCO3 nanocomposites, making them suitable for analyzing pesticide residues and detecting toxic and harmful molecules, thereby contributing to environmental protection.
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Affiliation(s)
- Fangyi Qin
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530001, China
| | - Rongjun Liu
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Guangxi Colleges and Universities Key Laboratory for Efficient Use of Featured Resources in the Southeast of Guangxi, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, China
| | - Qiong Wu
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Guangxi Colleges and Universities Key Laboratory for Efficient Use of Featured Resources in the Southeast of Guangxi, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, China
| | - Shulong Wang
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Guangxi Colleges and Universities Key Laboratory for Efficient Use of Featured Resources in the Southeast of Guangxi, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, China
| | - Fa Liu
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Guangxi Colleges and Universities Key Laboratory for Efficient Use of Featured Resources in the Southeast of Guangxi, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, China
| | - Qingmin Wei
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Guangxi Colleges and Universities Key Laboratory for Efficient Use of Featured Resources in the Southeast of Guangxi, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, China
| | - Jiayao Xu
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Guangxi Colleges and Universities Key Laboratory for Efficient Use of Featured Resources in the Southeast of Guangxi, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, China
| | - Zhihui Luo
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, Guangxi Colleges and Universities Key Laboratory for Efficient Use of Featured Resources in the Southeast of Guangxi, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, China
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Ellis M, Pant U, Lou-Franco J, Logan N, Cao C. Directed Assembly of Au Nanostar@Ag Satellite Nanostructures for SERS-Based Sensing of Hg 2+ Ions. ACS APPLIED NANO MATERIALS 2023; 6:10431-10440. [PMID: 37384129 PMCID: PMC10294701 DOI: 10.1021/acsanm.3c01382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 05/19/2023] [Indexed: 06/30/2023]
Abstract
Embedding Raman reporters within nanosized gaps of metallic nanoparticles is an attractive route for surface-enhanced Raman spectroscopy (SERS) applications, although often this involves complex synthesis procedures that limit their practical use. Herein, we present the tip-selective direct growth of silver satellites surrounding gold nanostars (AuNSt@AgSAT), mediated by a dithiol Raman reporter 1,4-benzenedithiol (BDT). We propose that BDT is embedded within nanogaps which form between the AuNSt tips and the satellites, and plays a key role in mediating the satellite growth. Not only proposing a rationale for the mechanistic growth of the AuNSt@AgSAT, we also demonstrate an example for its use for the detection of Hg2+ ions in water. The presence of Hg2+ resulted in amalgamation of the AuNSt@AgSAT, which altered both its structural morphology and Raman enhancement properties. This provides a basis for the detection where the Raman intensity of BDT is inversely proportional to the Hg2+ concentrations. As a result, Hg2+ could be detected at concentrations as low as 0.1 ppb. This paper not only provides important mechanistic insight into the tip-selective direct growth of the anisotropic nanostructure but also proposes its excellent Raman enhancement capability for bioimaging as well as biological and chemical sensing applications.
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Atta S, Vo-Dinh T. A hybrid plasmonic nanoprobe using polyvinylpyrrolidone-capped bimetallic silver-gold nanostars for highly sensitive and reproducible solution-based SERS sensing. Analyst 2023; 148:1786-1796. [PMID: 36920068 PMCID: PMC11000622 DOI: 10.1039/d2an01876d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Practical solution-based assays using surface-enhanced Raman spectroscopy (SERS) with portable instrumentation are currently of particular interest for rapid, efficient, and low-cost detection of analytes. However, current assays still have limited applicability due to their poor sensitivity and reproducibility. Herein, we demonstrate highly stable polyvinylpyrrolidone (PVP)-capped bimetallic silver-coated gold nanostars (BGNS-Ag-PVP) as a solution-based SERS nanoprobe that is capable of producing a strong, uniform, and reproducible SERS signal using a portable Raman instrument. The developed hybrid BGNS-Ag-PVP nanostructure shows tunable optical properties with improved SERS sensitivity and reproducibility as compared to gold nanostars. We have synthesized bimetallic nanoprobes BGNS-Ag-PVP having three different silvers, referred to as BGNS-Ag-PVP-1, BGNS-Ag-PVP-2, and BGNS-Ag-PVP-3. The SERS performance of BGNS-Ag-PVP was studied using methylene blue (Meb) as a probe molecule, and we achieved a detection limit of up to 10 nM indicating the high sensitivity of the solution-based SERS platform. The application of such bimetallic nanoparticles is demonstrated via the sensitive detection of the antithyroid drug methimazole (Mz) used as a model analyte system. We have achieved a detection limit of 1 nM for Mz spiked with human urine indicating three orders of magnitude lower than previously reported solution-based SERS detection methods. Furthermore, the SERS performance was reproducible over 3 months indicating excellent stability and repeatability. The result illustrates the potential of this solution-based SERS detection platform as a promising sensing tool for analytes such as illicit drugs, and biomarkers that have affinity to bind on nanoprobes.
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Affiliation(s)
- Supriya Atta
- Fitzpatrick Institute for Photonics, Duke University, Durham, NC 27708, USA.
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
| | - Tuan Vo-Dinh
- Fitzpatrick Institute for Photonics, Duke University, Durham, NC 27708, USA.
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
- Department of Chemistry, Duke University, Durham, NC 27708, USA
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Chakraborty A, Stanley MM, Mondal B, Bodiuzzaman M, Chakraborty P, Kannan MP, Pradeep T. Tunable reactivity of silver nanoclusters: a facile route to synthesize a range of bimetallic nanostructures. NANOSCALE 2023; 15:2690-2699. [PMID: 36651628 DOI: 10.1039/d2nr06350f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Quantized energy levels and unique optoelectronic properties of atomically precise noble metal nanoclusters (NCs) have made them important in materials science, catalysis, sensors, and biomedicine. Recent studies on the profound chemical interactions of such NCs within themselves and with ultrasmall plasmonic nanoparticles (NPs) indicate that depending on the size, shape, and composition of the second reactant, NCs can either take part in colloidal assembly without any chemical modifications or lead to products with atoms exchanged. Anisotropic NPs are a unique class of plasmonic nanomaterials as their sharp edges and protrusions show higher chemical reactivity compared to flat surfaces, often leading to site-specific growth of foreign metals and metal oxide shells. Here, using chemical interactions between gold nanotriangles (AuNTs) and Ag NCs of different compositions, we show for the first time that metal atom etching, alloying/atom exchange, and colloidal assembly can all happen at a particular length scale. Specifically, Ag25(DMBT)18 NCs (denoted as 1), upon reacting with AuNTs of ∼57 nm edge length, etch gold atoms from their sharp tips and edges. Simultaneously, the two nanosystems exchange metal atoms, resulting in Ag-doped AuNTs and AuxAg24-x(DMBT)18 (x = 1, 2). However, another Ag NC with the same metallic core, but a different ligand shell, namely, Ag25H22(DPPE)8 (denoted as 2), creates dendritic shells made of Ag, surrounding these AuNTs under the same reaction conditions. Furthermore, we show that in the case of a more reactive thiol-protected Ag NC, namely, Ag44(pMBA)30 (denoted as 3), gold etching is faster from the edges and tips, which drastically alters the identities of both the reactants. Interestingly, when the AuNTs are protected by pMBA, 3 systematically assembles on AuNTs through H-bonding, resulting in an AuNT core-Ag NC shell nanocomposite. Thus, while shedding light on various factors affecting the reactivity of Ag NCs towards AuNTs, the present study proposes a single strategy to obtain a number of bimetallic nanosystems of targeted morphology and functionality.
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Affiliation(s)
- Amrita Chakraborty
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Indian Institute of Technology Madras, Chennai 600 036, India.
| | - Megha Maria Stanley
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Indian Institute of Technology Madras, Chennai 600 036, India.
| | - Biswajit Mondal
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Indian Institute of Technology Madras, Chennai 600 036, India.
| | - Mohammad Bodiuzzaman
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Indian Institute of Technology Madras, Chennai 600 036, India.
| | - Papri Chakraborty
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Indian Institute of Technology Madras, Chennai 600 036, India.
| | - M P Kannan
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Indian Institute of Technology Madras, Chennai 600 036, India.
| | - Thalappil Pradeep
- Department of Chemistry, DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE), Indian Institute of Technology Madras, Chennai 600 036, India.
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11
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Core-satellite nanostructures and their biomedical applications. Mikrochim Acta 2022; 189:470. [DOI: 10.1007/s00604-022-05559-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 10/26/2022] [Indexed: 11/27/2022]
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12
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Rahman M, Niu J, Cui X, Zhou C, Tang N, Jin H, Cui D. Electrochemical Biosensor Based on l-Arginine and rGO-AuNSs Deposited on the Electrode Combined with DNA Probes for Ultrasensitive Detection of the Gastric Cancer-Related PIK3CA Gene of ctDNA. ACS APPLIED BIO MATERIALS 2022; 5:5094-5103. [PMID: 36315410 DOI: 10.1021/acsabm.2c00393] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Gene biomarkers of circulating tumor DNA (ctDNA) in liquid biopsies have been explored for use in the precise diagnosis of tumors. There is a great clinical need to realize the ultrasensitive detection of gene biomarkers in ctDNA. Here we reported that an ultrasensitive label-free biosensor was developed for the detection of the gastric cancer-related PIK3CA gene of ctDNA in peripheral blood. The polymeric l-arginine and graphene oxide-wrapped gold nanostars (rGO-AuNSs) were prepared and deposited on the glass electrode. The capturing DNA probes for the PIK3CA gene were prepared and successfully immobilized on the rGO-AuNS-modified electrode surface via π-π interaction among the rGO-AuNS composites and DNA probes. The resultant electrochemical sensor was effectively applied to detect the PIK3CA gene of ctDNA via the hybridization between the capturing DNA probe and ctDNA, the result of which showed that the biosensor exhibited desirable sensitivity, stability, and a wider dynamic response in a ctDNA concentration range from 1.0 × 10-20 to 1.0 × 10-10 M (R2 = 0.997). Moreover, the low limit of detection of 1.0 × 10-20 M (S/N = 3) indicates the biosensor owns satisfactory detection sensitivity. Fourteen PIK3CA genes and two PIK3CA gene mutations were detected in 60 clinical ctDNA samples of gastric cancer patients by using the developed biosensor. In conclusion, this ultrasensitive label-free electrochemical biosensor possesses a significant application prospect in the detection of the PIK3CA gene in ctDNA and in early screening for gastric cancer in the near future.
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Affiliation(s)
- Mahbubur Rahman
- Institute of Nano Biomedicine and Engineering, School of Sensing Science and Engineering, Shanghai Jiao Tong University, Shanghai200240, PR China.,Department of General Educational Development, Faculty of Science and Information Technology (FSIT), Daffodil International University, Daffodil Smart City, Ashulia, Savar, Dhaka1341, Bangladesh
| | - Jiaqi Niu
- Institute of Nano Biomedicine and Engineering, School of Sensing Science and Engineering, Shanghai Jiao Tong University, Shanghai200240, PR China
| | - Xinyuan Cui
- Medical Imaging Department of Tong Ji Hospital Affiliated to Tongji University, Shanghai200065, PR China
| | - Cheng Zhou
- Institute of Nano Biomedicine and Engineering, School of Sensing Science and Engineering, Shanghai Jiao Tong University, Shanghai200240, PR China.,National Engineering Center for Nanotechnology, Shanghai200241, PR China
| | - Ning Tang
- Institute of Nano Biomedicine and Engineering, School of Sensing Science and Engineering, Shanghai Jiao Tong University, Shanghai200240, PR China
| | - Han Jin
- Institute of Nano Biomedicine and Engineering, School of Sensing Science and Engineering, Shanghai Jiao Tong University, Shanghai200240, PR China.,National Engineering Center for Nanotechnology, Shanghai200241, PR China
| | - Daxiang Cui
- Institute of Nano Biomedicine and Engineering, School of Sensing Science and Engineering, Shanghai Jiao Tong University, Shanghai200240, PR China.,National Engineering Center for Nanotechnology, Shanghai200241, PR China
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13
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Boroujerdi R, Paul R, Abdelkader A. Rapid Detection of Amitriptyline in Dried Blood and Dried Saliva Samples with Surface-Enhanced Raman Spectroscopy. SENSORS (BASEL, SWITZERLAND) 2022; 22:8257. [PMID: 36365956 PMCID: PMC9657543 DOI: 10.3390/s22218257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/20/2022] [Accepted: 10/25/2022] [Indexed: 06/16/2023]
Abstract
There is growing demand for rapid, nondestructive detection of trace-level bioactive molecules including medicines, toxins, biomolecules, and single cells, in a variety of disciplines. In recent years, surface-enhanced Raman scattering has been increasingly applied for such purposes, and this area of research is rapidly growing. Of particular interest is the detection of such compounds in dried saliva spots (DSS) and dried blood spots (DBS), often in medical scenarios, such as therapeutic drug monitoring (TDM) and disease diagnosis. Such samples are usually analyzed using hyphenated chromatography techniques, which are costly and time consuming. Here we present for the first time a surface-enhanced Raman spectroscopy protocol for the detection of the common antidepressant amitriptyline (AMT) on DBS and DSS using a test substrate modified with silver nanoparticles. The validated protocol is rapid and non-destructive, with a detection limit of 95 ppb, and linear range between 100 ppb and 1.75 ppm on the SERS substrate, which covers the therapeutic window of AMT in biological fluids.
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14
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Lee SJ, Jang H, Lee DN. Inorganic Nanoflowers—Synthetic Strategies and Physicochemical Properties for Biomedical Applications: A Review. Pharmaceutics 2022; 14:pharmaceutics14091887. [PMID: 36145635 PMCID: PMC9505446 DOI: 10.3390/pharmaceutics14091887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/30/2022] [Accepted: 09/02/2022] [Indexed: 11/29/2022] Open
Abstract
Nanoflowers, which are flower-shaped nanomaterials, have attracted significant attention from scientists due to their unique morphologies, facile synthetic methods, and physicochemical properties such as a high surface-to-volume ratio, enhanced charge transfer and carrier immobility, and an increased surface reaction efficiency. Nanoflowers can be synthesized using inorganic or organic materials, or a combination of both (called a hybrid), and are mainly used for biomedical applications. Thus far, researchers have focused on hybrid nanoflowers and only a few studies on inorganic nanoflowers have been reported. For the first time in the literature, we have consolidated all the reports on the biomedical applications of inorganic nanoflowers in this review. Herein, we review some important inorganic nanoflowers, which have applications in antibacterial treatment, wound healing, combinatorial cancer therapy, drug delivery, and biosensors to detect diseased conditions such as diabetes, amyloidosis, and hydrogen peroxide poisoning. In addition, we discuss the recent advances in their biomedical applications and preparation methods. Finally, we provide a perspective on the current trends and potential future directions in nanoflower research. The development of inorganic nanoflowers for biomedical applications has been limited to date. Therefore, a diverse range of nanoflowers comprising inorganic elements and materials with composite structures must be synthesized using ecofriendly synthetic strategies.
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Affiliation(s)
- Su Jung Lee
- Ingenium College of Liberal Arts (Chemistry), Kwangwoon University, Seoul 01897, Korea
| | - Hongje Jang
- Department of Chemistry, Kwangwoon University, Seoul 01897, Korea
- Correspondence: (H.J.); (D.N.L.)
| | - Do Nam Lee
- Ingenium College of Liberal Arts (Chemistry), Kwangwoon University, Seoul 01897, Korea
- Correspondence: (H.J.); (D.N.L.)
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15
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Contemporary nanocellulose-composites: A new paradigm for sensing applications. Carbohydr Polym 2022; 298:120052. [DOI: 10.1016/j.carbpol.2022.120052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 08/24/2022] [Accepted: 08/25/2022] [Indexed: 01/21/2023]
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16
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Twinned-Au-tip-induced growth of plasmonic Au-Cu Janus nanojellyfish in upconversion luminescence enhancement. J Colloid Interface Sci 2022; 624:196-203. [PMID: 35660888 DOI: 10.1016/j.jcis.2022.05.143] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 05/15/2022] [Accepted: 05/24/2022] [Indexed: 11/21/2022]
Abstract
The metallic Janus nanoparticle is an emerging plasmonic nanostructure that has attracted attention in the fields of materials science and nanophotonics. The instability of the Cu nanostructure leads to very complex nucleation and growth kinetics, and synthesis of Cu Janus nanoparticle has challenges. Here, we report a new method for synthesis of Au-Cu Janus nanojellyfish (JNF) by using twinned tips of Au nanoflower (NF) as seeds. The twinned nanotip of the Au NF and the large lattice mismatch between Au and Cu can induce formation of twin defects during the growth process, resulting in asymmetric deposition of Cu atoms. The symmetry-breaking using different sizes of Au NF and Cu nanodomains within the Au-Cu JNF can controllably change the localized surface plasmon resonance (LSPR) modes. The asymmetric Au-Cu JNF can induce plasmon coupling between dipolar and multipolar modes, which leads to clear electric-field enhancement in the near-infrared region. An Au-Cu JNF with multiple LSPR modes was chosen to simultaneously match the excitation and emission bands of the lanthanide-doped upconversion nanoparticles (UCNPs). A 5000-fold enhancement of the upconversion luminescence was achieved by using single plasmonic Au-Cu JNF. The Au-Cu JNF can also provide a guide for new metallic Janus nanoparticles in the fields of plasmonic, photothermal conversion, and nanomotors.
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17
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Andreiuk B, Nicolson F, Clark LM, Panikkanvalappil SR, Kenry, Rashidian M, Harmsen S, Kircher MF. Design and synthesis of gold nanostars-based SERS nanotags for bioimaging applications. Nanotheranostics 2022; 6:10-30. [PMID: 34976578 PMCID: PMC8671966 DOI: 10.7150/ntno.61244] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Accepted: 05/10/2021] [Indexed: 12/17/2022] Open
Abstract
Surface-enhanced Raman spectroscopy (SERS) nanotags hold a unique place among bioimaging contrast agents due to their fingerprint-like spectra, which provide one of the highest degrees of detection specificity. However, in order to achieve a sufficiently high signal intensity, targeting capabilities, and biocompatibility, all components of nanotags must be rationally designed and tailored to a specific application. Design parameters include fine-tuning the properties of the plasmonic core as well as optimizing the choice of Raman reporter molecule, surface coating, and targeting moieties for the intended application. This review introduces readers to the principles of SERS nanotag design and discusses both established and emerging protocols of their synthesis, with a specific focus on the construction of SERS nanotags in the context of bioimaging and theranostics.
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Affiliation(s)
- Bohdan Andreiuk
- Department of Imaging, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
| | - Fay Nicolson
- Department of Imaging, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
| | - Louise M. Clark
- Department of Imaging, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
| | | | - Kenry
- Department of Imaging, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Mohammad Rashidian
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
| | - Stefan Harmsen
- Department of Radiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Moritz F. Kircher
- Department of Imaging, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA
- Department of Radiology, Brigham & Women's Hospital and Harvard Medical School, Boston, MA 022115, USA
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18
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Nieto-Argüello A, Torres-Castro A, Villaurrutia-Arenas R, Martínez-Sanmiguel JJ, González MU, García-Martín JM, Cholula-Díaz JL. Green synthesis and characterization of gold-based anisotropic nanostructures using bimetallic nanoparticles as seeds. Dalton Trans 2021; 50:16923-16928. [PMID: 34668500 DOI: 10.1039/d1dt02804a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Nanostructured noble metals are of great interest because of their tunable optical and electronic properties. However, the green synthesis of anisotropic nanostructures with a defined geometry by the systematic nanoassembly of particles into specific shape, size, and crystallographic facets still faces major challenges. The present work aimed to establish an environmentally friendly methodology for synthesizing gold-based anisotropic nanostructures using starch-capped bimetallic silver/gold nanoparticles as seeds and hydrogen peroxide as a reducing agent.
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Affiliation(s)
- Alfonso Nieto-Argüello
- School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, N.L., Mexico.
| | - Alejandro Torres-Castro
- Faculty School of Mechanical and Electrical Engineering (FIME), Universidad Autónoma de Nuevo Leon (UANL), San Nicolás de los Garza 66451, N.L., Mexico
| | | | - Juan J Martínez-Sanmiguel
- School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, N.L., Mexico.
| | - María Ujué González
- Instituto de Micro y Nanotecnología, IMN-CNM, CSIC (CEI UAM+CSIC), Isaac Newton 8, Tres Cantos 28760, Spain
| | - José Miguel García-Martín
- Instituto de Micro y Nanotecnología, IMN-CNM, CSIC (CEI UAM+CSIC), Isaac Newton 8, Tres Cantos 28760, Spain
| | - Jorge L Cholula-Díaz
- School of Engineering and Sciences, Tecnologico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, Monterrey 64849, N.L., Mexico.
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19
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Chen H, Cheng Z, Zhou X, Wang R, Yu F. Emergence of Surface-Enhanced Raman Scattering Probes in Near-Infrared Windows for Biosensing and Bioimaging. Anal Chem 2021; 94:143-164. [PMID: 34812039 DOI: 10.1021/acs.analchem.1c03646] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Hui Chen
- Key Laboratory of Hainan Trauma and Disaster Rescue, Laboratory of Neurology, The First Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou 571199, China.,Key Laboratory of Emergency and Trauma, Ministry of Education, Key Laboratory of Hainan Functional Materials and Molecular Imaging, College of Pharmacy, College of Emergency and Trauma, Hainan Medical University, Haikou 571199, China
| | - Ziyi Cheng
- Key Laboratory of Hainan Trauma and Disaster Rescue, Laboratory of Neurology, The First Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou 571199, China.,Key Laboratory of Emergency and Trauma, Ministry of Education, Key Laboratory of Hainan Functional Materials and Molecular Imaging, College of Pharmacy, College of Emergency and Trauma, Hainan Medical University, Haikou 571199, China
| | - Xuejun Zhou
- Key Laboratory of Hainan Trauma and Disaster Rescue, Laboratory of Neurology, The First Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou 571199, China.,Key Laboratory of Emergency and Trauma, Ministry of Education, Key Laboratory of Hainan Functional Materials and Molecular Imaging, College of Pharmacy, College of Emergency and Trauma, Hainan Medical University, Haikou 571199, China
| | - Rui Wang
- Key Laboratory of Hainan Trauma and Disaster Rescue, Laboratory of Neurology, The First Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou 571199, China.,Key Laboratory of Emergency and Trauma, Ministry of Education, Key Laboratory of Hainan Functional Materials and Molecular Imaging, College of Pharmacy, College of Emergency and Trauma, Hainan Medical University, Haikou 571199, China
| | - Fabiao Yu
- Key Laboratory of Hainan Trauma and Disaster Rescue, Laboratory of Neurology, The First Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou 571199, China.,Key Laboratory of Emergency and Trauma, Ministry of Education, Key Laboratory of Hainan Functional Materials and Molecular Imaging, College of Pharmacy, College of Emergency and Trauma, Hainan Medical University, Haikou 571199, China
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20
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Sharma RK, Yadav S, Dutta S, Kale HB, Warkad IR, Zbořil R, Varma RS, Gawande MB. Silver nanomaterials: synthesis and (electro/photo) catalytic applications. Chem Soc Rev 2021; 50:11293-11380. [PMID: 34661205 DOI: 10.1039/d0cs00912a] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In view of their unique characteristics and properties, silver nanomaterials (Ag NMs) have been used not only in the field of nanomedicine but also for diverse advanced catalytic technologies. In this comprehensive review, light is shed on general synthetic approaches encompassing chemical reduction, sonochemical, microwave, and thermal treatment among the preparative methods for the syntheses of Ag-based NMs and their catalytic applications. Additionally, some of the latest innovative approaches such as continuous flow integrated with MW and other benign approaches have been emphasized that ultimately pave the way for sustainability. Moreover, the potential applications of emerging Ag NMs, including sub nanomaterials and single atoms, in the field of liquid-phase catalysis, photocatalysis, and electrocatalysis as well as a positive role of Ag NMs in catalytic reactions are meticulously summarized. The scientific interest in the synthesis and applications of Ag NMs lies in the integrated benefits of their catalytic activity, selectivity, stability, and recovery. Therefore, the rise and journey of Ag NM-based catalysts will inspire a new generation of chemists to tailor and design robust catalysts that can effectively tackle major environmental challenges and help to replace noble metals in advanced catalytic applications. This overview concludes by providing future perspectives on the research into Ag NMs in the arena of electrocatalysis and photocatalysis.
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Affiliation(s)
- Rakesh Kumar Sharma
- Green Chemistry Network Centre, University of Delhi, New Delhi-110007, India.
| | - Sneha Yadav
- Green Chemistry Network Centre, University of Delhi, New Delhi-110007, India.
| | - Sriparna Dutta
- Green Chemistry Network Centre, University of Delhi, New Delhi-110007, India.
| | - Hanumant B Kale
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Mumbai-Marathwada Campus, Jalna-431213, Maharashtra, India.
| | - Indrajeet R Warkad
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Mumbai-Marathwada Campus, Jalna-431213, Maharashtra, India.
| | - Radek Zbořil
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Šlechtitelů 27, 779 00 Olomouc, Czech Republic.,Nanotechnology Centre, CEET, VŠB-Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
| | - Rajender S Varma
- Regional Centre of Advanced Technologies and Materials, Czech Advanced Technology and Research Institute, Palacký University, Šlechtitelů 27, 779 00 Olomouc, Czech Republic.,U. S. Environmental Protection Agency, ORD, Center for Environmental Solutions and Emergency Response Water Infrastructure Division/Chemical Methods and Treatment Branch, 26 West Martin Luther King Drive, MS 483 Cincinnati, Ohio 45268, USA.
| | - Manoj B Gawande
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Mumbai-Marathwada Campus, Jalna-431213, Maharashtra, India.
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21
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Karunakaran V, Saritha VN, Ramya AN, Murali VP, Raghu KG, Sujathan K, Maiti KK. Elucidating Raman Image-Guided Differential Recognition of Clinically Confirmed Grades of Cervical Exfoliated Cells by Dual Biomarker-Appended SERS-Tag. Anal Chem 2021; 93:11140-11150. [PMID: 34348462 DOI: 10.1021/acs.analchem.1c01607] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ultrasensitive detection of cancer biomarkers via single-cell analysis through Raman imaging is an impending approach that modulates the possibility of early diagnosis. Cervical cancer is one such type that can be monitored for a sufficiently long period toward invasive cancer phenotype. Herein, we report a surface-enhanced Raman scattering (SERS) nanotag (SERS-tag) for the simultaneous detection of p16/K-i67, a dual biomarker persisting in the progression of squamous cell carcinoma of human cervix. A nanoflower-shaped SERS-tag, constituted of hybrid gold nanostar with silver tips to achieve maximum fingerprint enhancement from the incorporated reporter molecule, was further functionalized with the cocktail monoclonal antibodies against p16/K-i67. The recognition by the SERS-tag was first validated in cervical squamous cell carcinoma cell line SiHa as a foot-step study and subsequently implemented to different grades of clinically confirmed exfoliated cells including normal cell (NC), high-grade intra-epithelial lesion (HC), and squamous cell carcinoma (CC) samples of the cervix. Precise Raman mapped images were constituted based on the average intensity gradient of the signature Raman peaks arising from different grades of exfoliated cells. We observed a distinct intensity hike of around 10-fold in the single dysplastic HC and CC samples in comparison to NC specimen, which clearly justify the prevalence of p16/Ki-67. The synthesized probe is able to map the abnormal cells within 20 min with high reproducibility and stability for 1 mm × 1 mm mapping area with good contrast. Amidst the challenges in Raman image-guided modality, the technique was further complemented with the gold standard immunocytochemistry (ICC) dual staining analysis. Even though both are time-consuming techniques, tedious steps can be avoided and real-time readout can be achieved using the SERS mapping unlike immunocytochemistry technique. Therefore, the newly developed Raman image-guided SERS imaging emphasizes the approach of uplifting of SERS in practical utility with further improvement for clinical applications for cervical cancer detection in future.
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Affiliation(s)
- Varsha Karunakaran
- CSIR-National Institute for Interdisciplinary Science & Technology (NIIST), Chemical Sciences & Technology Division (CSTD), Organic Chemistry Section, Thiruvananthapuram 695019, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Valliamma N Saritha
- Regional Cancer Centre (RCC), Division of Cancer Research, Thiruvananthapuram 695011, Kerala, India
| | - Adukkadan N Ramya
- CSIR-National Institute for Interdisciplinary Science & Technology (NIIST), Chemical Sciences & Technology Division (CSTD), Organic Chemistry Section, Thiruvananthapuram 695019, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Vishnu Priya Murali
- CSIR-National Institute for Interdisciplinary Science & Technology (NIIST), Chemical Sciences & Technology Division (CSTD), Organic Chemistry Section, Thiruvananthapuram 695019, Kerala, India
| | - Kozhiparambil G Raghu
- CSIR-National Institute for Interdisciplinary Science & Technology (NIIST), Agro-Processing and Technology Division (APTD), Thiruvananthapuram 695019, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Kunjuraman Sujathan
- Regional Cancer Centre (RCC), Division of Cancer Research, Thiruvananthapuram 695011, Kerala, India
| | - Kaustabh Kumar Maiti
- CSIR-National Institute for Interdisciplinary Science & Technology (NIIST), Chemical Sciences & Technology Division (CSTD), Organic Chemistry Section, Thiruvananthapuram 695019, Kerala, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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22
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Wang H, Liu Y, Rao G, Wang Y, Du X, Hu A, Hu Y, Gong C, Wang X, Xiong J. Coupling enhancement mechanisms, materials, and strategies for surface-enhanced Raman scattering devices. Analyst 2021; 146:5008-5032. [PMID: 34296232 DOI: 10.1039/d1an00624j] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Surface-enhanced Raman scattering (SERS) has become one of the most sensitive analytical techniques for identifying the chemical components, molecular structures, molecular conformations, and the interactions between molecules. However, great challenges still need to be addressed until it can be widely accepted by the absolute quantification of analytes. Recently, many efforts have been devoted to addressing these issues via various electromagnetic (EM), chemical (CM), and EM-CM hybrid coupling enhancement strategies. In comparison with uncoupled SERS devices, they offer key advantages in terms of sensitivity, reproducibility, uniformity, stability, controllability and reliability. This review provides an in-depth analysis of coupled SERS devices, including coupling enhancement mechanisms, materials and approaches. Finally, we also discuss the remaining bottlenecks and possible strategies for the development of coupling-enhanced SERS devices in the future.
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Affiliation(s)
- Hongbo Wang
- State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, P. R. China.
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23
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A Rapid Visual Detection of Ascorbic Acid Through Morphology Transformation of Silver Triangular Nanoplates. JOURNAL OF ANALYSIS AND TESTING 2021. [DOI: 10.1007/s41664-021-00174-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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24
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Lee S, Lee S, Kim JM, Son J, Cho E, Yoo S, Hilal H, Nam JM, Park S. Au nanolenses for near-field focusing. Chem Sci 2021; 12:6355-6361. [PMID: 34084434 PMCID: PMC8115063 DOI: 10.1039/d1sc00202c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report a novel strategy for the synthesis of Pt@Au nanorings possessing near-field focusing capabilities at the center through which single-particle surface enhanced Raman scattering could be readily observed. We utilized Pt@Au nanorings as a light-absorber; the absorbed light could be focused at the center with the aid of a Au nanoporous structure. We synthesized the Au nanolens structure through a Galvanic exchange process between Au ions and Ag block at the inner domain of the Pt@Au nanoring. For this step, Ag was selectively pre-deposited at the inner domain of the Pt@Au nanorings through electrochemical potential-tuned growth control and different surface energies with regard to the inner and outer boundaries of the nanoring. Then, the central nanoporous architecture was fabricated through the Galvanic exchange of sacrificial Ag with Au ions leading to the resulting Au nanoring with a Au nanoporous structure at the center. We monitored the shape-transformation by observing their corresponding localized surface plasmon resonance (LSPR) profiles. By varying the rim thickness of the starting Pt@Au nanorings, the inner diameter of the nanolens was accordingly tuned to maximize near-field focusing, which enabled us to obtain the reproducible and light-polarization independent measurements of single-particle SERS. Through theoretical simulation, the near-field electromagnetic field focusing capability was visualized and confirmed through single-particle SERS measurement showing an enhancement factor of 1.9 × 108 to 1.0 × 109. We synthesized a Au nanolens with electromagnetic near-field focusing capability by integrating a Au nanoporous structure at the center of the Pt@Au nanoring via synthetic steps of eccentric growth of Ag and nanoscale Galvanic exchange reaction.![]()
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Affiliation(s)
- Sungwoo Lee
- Department of Chemistry, Sungkyunkwan University Suwon 440-746 South Korea
| | - Soohyun Lee
- Department of Chemistry, Sungkyunkwan University Suwon 440-746 South Korea
| | - Jae-Myoung Kim
- Department of Chemistry, Seoul National University Seoul 08826 South Korea
| | - Jiwoong Son
- Department of Chemistry, Seoul National University Seoul 08826 South Korea
| | - Eunbyeol Cho
- Department of Chemistry, Sungkyunkwan University Suwon 440-746 South Korea
| | - Sungjae Yoo
- Department of Chemistry, Sungkyunkwan University Suwon 440-746 South Korea
| | - Hajir Hilal
- Department of Chemistry, Sungkyunkwan University Suwon 440-746 South Korea
| | - Jwa-Min Nam
- Department of Chemistry, Seoul National University Seoul 08826 South Korea
| | - Sungho Park
- Department of Chemistry, Sungkyunkwan University Suwon 440-746 South Korea
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25
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Kaur V, Tanwar S, Kaur G, Sen T. DNA-Origami-Based Assembly of Au@Ag Nanostar Dimer Nanoantennas for Label-Free Sensing of Pyocyanin. Chemphyschem 2021; 22:160-167. [PMID: 33206442 DOI: 10.1002/cphc.202000805] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/29/2020] [Indexed: 12/31/2022]
Abstract
Early-stage detection of diseases caused by pathogens is a prerequisite for expedient patient care. Due to the limited signal-to-noise ratio, molecular diagnostics needs molecular signal amplification after recognition of the target molecule. In this present study, we demonstrate the design of plasmonically coupled bimetallic Ag coated Au nanostar dimers with controlled nanogap using rectangular DNA origami. We further report the utility of the designed nanostar dimer structures as efficient SERS substrate for the ultrasensitive and label-free detection of the pyocyanin molecule, which is a biomarker of the opportunistic pathogenic bacteria, Pseudomonas aeruginosa. The experimental results showed that the detection limit of pyocyanin with such nanoantenna based biosensor was 335 pM, which is much lower than the clinical range of detection. Thus, fast, sensitive and label-free detection of pyocyanin at ultralow concentration in an infected human body can pave a facile route for early stage warning for severe bacterial infections.
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Affiliation(s)
- Vishaldeep Kaur
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India
| | - Swati Tanwar
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India
| | - Gagandeep Kaur
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India
| | - Tapasi Sen
- Institute of Nano Science and Technology, Phase-10, Sector-64, Mohali, Punjab, 160062, India
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26
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Wu J, Feng Y, Zhang L, Wu W. Nanocellulose-based Surface-enhanced Raman spectroscopy sensor for highly sensitive detection of TNT. Carbohydr Polym 2020; 248:116766. [DOI: 10.1016/j.carbpol.2020.116766] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/01/2020] [Accepted: 07/11/2020] [Indexed: 12/11/2022]
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27
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Dong J, Wu F, Han Q, Qi J, Gao W, Wang Y, Li T, Yang Y, Sun M. Electrochemical synthesis of tin plasmonic dendritic nanostructures with SEF capability through in situ replacement. RSC Adv 2020; 10:36042-36050. [PMID: 35517114 PMCID: PMC9056996 DOI: 10.1039/d0ra06483a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Accepted: 09/21/2020] [Indexed: 12/21/2022] Open
Abstract
Dendrite nanostructures with noble metals, such as Au and silver, act as plasmonic substrates with excellent potential in enhanced fluorescence technology. However, tin dendritic nanostructures are poorly investigated. In this study, we proposed a method of in situ electrochemical synthesis replacement to fabricate highly branched tin dendritic nanostructures on aluminum substrates. The surface enhanced fluorescence performance of the tin dendrites was tested for the detection of rhodamine 6G as probe molecules, and the result showed that the enhancement factors can reach to 36.5-fold that of an aluminum substrate. The fabricated tin dendrites have numerous nanogaps between the stratified and adjacent ones, thereby creating many plasmon-active “hotspots” dedicated to enhanced fluorescence. Electrical field simulation results for the tin dendritic nanostructures proved that its nanogaps can enhance the nearby local electromagnetic field. As a result, tin dendritic nanostructures exhibit outstanding surface enhanced fluorescence and promising application in biomolecule detection and sensor devices. Dendrite nanostructures with noble metals, such as Au, silver and tin, act as plasmonic substrates with excellent potential in enhanced fluorescence technology.![]()
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Affiliation(s)
- Jun Dong
- School of Electronic Engineering, Xi'an University of Posts and Telecommunications Xi'an 710121 China
| | - Feifei Wu
- School of Electronic Engineering, Xi'an University of Posts and Telecommunications Xi'an 710121 China
| | - Qingyan Han
- School of Electronic Engineering, Xi'an University of Posts and Telecommunications Xi'an 710121 China
| | - Jianxia Qi
- School of Electronic Engineering, Xi'an University of Posts and Telecommunications Xi'an 710121 China
| | - Wei Gao
- School of Electronic Engineering, Xi'an University of Posts and Telecommunications Xi'an 710121 China
| | - Yongkai Wang
- School of Electronic Engineering, Xi'an University of Posts and Telecommunications Xi'an 710121 China
| | - Tuo Li
- School of Electronic Engineering, Xi'an University of Posts and Telecommunications Xi'an 710121 China
| | - Yi Yang
- School of Electronic Engineering, Xi'an University of Posts and Telecommunications Xi'an 710121 China
| | - Mengtao Sun
- School of Mathematics and Physics, Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, Center for Green Innovation, University of Science and Technology Beijing Beijing 100083 China
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28
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Zheng G, Mourdikoudis S, Zhang Z. Plasmonic Metallic Heteromeric Nanostructures. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2002588. [PMID: 32762017 DOI: 10.1002/smll.202002588] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 06/06/2020] [Indexed: 06/11/2023]
Abstract
Binary, ternary, and other high-order plasmonic heteromers possess remarkable physical and chemical properties, enabling them to be used in numerous applications. The seed-mediated approach is one of the most promising and versatile routes to produce plasmonic heteromers. Selective growth of one or multiple domains on desired sites of noble metal, semiconductor, or magnetic seeds would form desired heteromeric nanostructures with multiple functionalities and synergistic effects. In this work, the challenges for the synthetic approaches are discussed with respect to tuning the thermodynamics, as well as the kinetic properties (e.g., pH, temperature, injection rate, among others). Then, plasmonic heteromers with their structure advantages displaying unique activities compared to other hybrid nanostructures (e.g., core-shell, alloy) are highlighted. Some of the main most recent applications of plasmonic heteromers are also presented. Finally, perspectives for further exploitation of plasmonic heteromers are demonstrated. The goal of this work is to provide the current know-how on the synthesis routes of plasmonic heteromers in a summarized manner, so as to achieve a better understanding of the resulting properties and to gain an improved control of their performances and extend their breadth of applications.
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Affiliation(s)
- Guangchao Zheng
- School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, 450001, China
| | - Stefanos Mourdikoudis
- Biophysics Group, Department of Physics and Astronomy, University College London (UCL), London, WC1E 6BT, UK
- UCL Healthcare Biomagnetic and Nanomaterials Laboratories, London, W1S 4BS, UK
| | - Zhicheng Zhang
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China
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29
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Hao H, Yang Y, Zou C, Chen W, Wen H, Wang W, Yang Y. Effects of Strain and Kinetics on the H 2O 2-Assisted Reconstruction of Ag-Au-Ag Nanorods. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:9770-9779. [PMID: 32787127 PMCID: PMC7450662 DOI: 10.1021/acs.langmuir.0c01230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 07/29/2020] [Indexed: 05/24/2023]
Abstract
Morphology of Ag nanocrystals (NCs) is essential to the NC application in catalysis, optics, and as antibacterial agents. Therefore, it is important to develop synthetic methods and understand the evaluation of NC morphology in different chemical environments. In this study, we report interesting findings of the morphological change of fivefold-twinned Ag-Au-Ag nanorods (NRs) under the effect of H2O2 both as an oxidant (etchant) and a reductant. At low H2O2 concentration, the reconstruction of Ag-Au-Ag NRs was dominated by the growth along the longitudinal direction of NRs. With the increase of H2O2 concentration, the reconstruction also occurs in the transverse direction, and a clear change in particle morphology was observed. We further systematically studied the mechanism of the reaction. The results showed that the transition of the morphology was a two-step process: (1) the etching of Ag on the seeds and (2) the reduction of Ag2O. In the second step, the reaction kinetics was highly affected by H2O2 concentration. At low H2O2 concentration, the growth mainly occurs along ⟨110⟩. However, at high H2O2 concentration, the reduction of Ag was not facet-selective. Using the developed method, we can prepare various bimetallic NCs (high aspect ratio NRs with abundant pinholes, nanoplates, and other NCs). The effect of the reconstruction process on the surface-enhanced Raman scattering (SERS) performance of NCs was investigated.
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Affiliation(s)
- Hui Hao
- Nanomaterials
and Chemistry Key Laboratory, Wenzhou University, Wenzhou 325035, China
| | - Yinliang Yang
- College
of Pharmacy, Liaocheng University, Liaocheng 252000, Shandong, China
| | - Chao Zou
- Nanomaterials
and Chemistry Key Laboratory, Wenzhou University, Wenzhou 325035, China
| | - Wei Chen
- Nanomaterials
and Chemistry Key Laboratory, Wenzhou University, Wenzhou 325035, China
| | - Haihong Wen
- College
of Life and Environmental Science, Wenzhou
University, Wenzhou 325035, China
| | - Wei Wang
- Department
of Chemistry & Center for Pharmacy, University of Bergen, 5020 Bergen, Norway
| | - Yun Yang
- Nanomaterials
and Chemistry Key Laboratory, Wenzhou University, Wenzhou 325035, China
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30
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Fiorati A, Bellingeri A, Punta C, Corsi I, Venditti I. Silver Nanoparticles for Water Pollution Monitoring and Treatments: Ecosafety Challenge and Cellulose-Based Hybrids Solution. Polymers (Basel) 2020; 12:E1635. [PMID: 32717864 PMCID: PMC7465245 DOI: 10.3390/polym12081635] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 07/16/2020] [Accepted: 07/20/2020] [Indexed: 12/26/2022] Open
Abstract
Silver nanoparticles (AgNPs) are widely used as engineered nanomaterials (ENMs) in many advanced nanotechnologies, due to their versatile, easy and cheap preparations combined with peculiar chemical-physical properties. Their increased production and integration in environmental applications including water treatment raise concerns for their impact on humans and the environment. An eco-design strategy that makes it possible to combine the best material performances with no risk for the natural ecosystems and living beings has been recently proposed. This review envisages potential hybrid solutions of AgNPs for water pollution monitoring and remediation to satisfy their successful, environmentally safe (ecosafe) application. Being extremely efficient in pollutants sensing and degradation, their ecosafe application can be achieved in combination with polymeric-based materials, especially with cellulose, by following an eco-design approach. In fact, (AgNPs)-cellulose hybrids have the double advantage of being easily produced using recycled material, with low costs and possible reuse, and of being ecosafe, if properly designed. An updated view of the use and prospects of these advanced hybrids AgNP-based materials is provided, which will surely speed their environmental application with consequent significant economic and environmental impact.
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Affiliation(s)
- Andrea Fiorati
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta” and INSTM Local Unit, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (A.F.); (C.P.)
| | - Arianna Bellingeri
- Department of Physical, Earth and Environmental Sciences and INSTM Local Unit, University of Siena, 53100 Siena, Italy; (A.B.); (I.C.)
| | - Carlo Punta
- Department of Chemistry, Materials, and Chemical Engineering “G. Natta” and INSTM Local Unit, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; (A.F.); (C.P.)
| | - Ilaria Corsi
- Department of Physical, Earth and Environmental Sciences and INSTM Local Unit, University of Siena, 53100 Siena, Italy; (A.B.); (I.C.)
| | - Iole Venditti
- Department of Sciences, Roma Tre University of Rome, via della Vasca Navale 79, 00146 Rome, Italy
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31
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Wu J, Zhang L, Huang F, Ji X, Dai H, Wu W. Surface enhanced Raman scattering substrate for the detection of explosives: Construction strategy and dimensional effect. JOURNAL OF HAZARDOUS MATERIALS 2020; 387:121714. [PMID: 31818672 DOI: 10.1016/j.jhazmat.2019.121714] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 11/08/2019] [Accepted: 11/17/2019] [Indexed: 06/10/2023]
Abstract
Surface-enhanced Raman spectroscopy (SERS) technology has been reported to be able to quickly and non-destructively identify target analytes. SERS substrate with high sensitivity and selectivity gave SERS technology a broad application prospect. This contribution aims to provide a detailed and systematic review of the current state of research on SERS-based explosive sensors, with particular attention to current research advances. This review mainly focuses on the strategies for improving SERS performance and the SERS substrates with different dimensions including zero-dimensional (0D) nanocolloids, one-dimensional (1D) nanowires and nanorods, two-dimensional (2D) arrays, and three-dimensional (3D) networks. The effects of elemental composition, the shape and size of metal nanoparticles, hot-spot structure and surface modification on the performance of explosive detection are also reviewed. In addition, the future development tendency and application of SERS-based explosive sensors are prospected.
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Affiliation(s)
- Jingjing Wu
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Lei Zhang
- Key Laboratory for Organic Electronics and Information, National Jiangsu Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China.
| | - Fang Huang
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xingxiang Ji
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Hongqi Dai
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Weibing Wu
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China; State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
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32
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Mei R, Wang Y, Yu Q, Yin Y, Zhao R, Chen L. Gold Nanorod Array-Bridged Internal-Standard SERS Tags: From Ultrasensitivity to Multifunctionality. ACS APPLIED MATERIALS & INTERFACES 2020; 12:2059-2066. [PMID: 31867956 DOI: 10.1021/acsami.9b18292] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Bimetallic gold core-silver shell (Au@Ag) surface-enhanced Raman scattering (SERS) tags draw broad interest in the fields of biological and environmental analysis. In reported tags, silver coating tended to smooth the surface and merge the original hotspot of Au cores, which was disadvantageous to signal enhancement from the aspect of surface topography. Herein, we developed gold nanorod (AuNR)-bridged Au@Ag SERS tags with uniform three-dimensional (3D) topography for the first time. This unique structure was achieved by selecting waxberry-like Au nanoparticles (NPs) as cores, which were capped by vertically oriented AuNR arrays. Upon selective surface blocking with thiol-ligands, Ag NPs were controlled to anisotropically grow on the tips of the AuNRs, producing high-density homo- (Ag-Ag) and hetero- (Au-Ag) hotspots in a single NP. The 3D hotspots rendered this NP extraordinary SERS enhancement ability (an analytical enhancement factor of 3.4 × 106) 30 times higher than the counterpart with a smooth surface, realizing signal detection from a single NP. More importantly, multiplexing signals ("blank" or multiplex "internal standard") can be achieved by simply changing thiol-ligands, as exemplified in the synthesis of NPs with 8 signatures. Furthermore, the multifunctionality has been demonstrated in living cell/in vivo imaging, photothermal therapy, and SERS substrates for ratiometric quantitative analysis, relying on the inherent internal standard signal. The prepared Au@Ag NPs have great potential as standard tools in many SERS-related fields.
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Affiliation(s)
- Rongchao Mei
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research , Chinese Academy of Sciences , Yantai 264003 , China
| | - Yunqing Wang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research , Chinese Academy of Sciences , Yantai 264003 , China
| | - Qian Yu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research , Chinese Academy of Sciences , Yantai 264003 , China
| | - Yingchao Yin
- School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education , Yantai University , Yantai 264005 , China
| | - Rongfang Zhao
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research , Chinese Academy of Sciences , Yantai 264003 , China
| | - Lingxin Chen
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research , Chinese Academy of Sciences , Yantai 264003 , China
- College of Chemistry and Chemical Engineering , Qufu Normal University , Qufu 273165 , China
- Center for Ocean Mega-Science , Chinese Academy of Sciences , Qingdao 266071 , China
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33
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Jeong S, Kim MW, Jo YR, Kim NY, Kang D, Lee SY, Yim SY, Kim BJ, Kim JH. Hollow Porous Gold Nanoshells with Controlled Nanojunctions for Highly Tunable Plasmon Resonances and Intense Field Enhancements for Surface-Enhanced Raman Scattering. ACS APPLIED MATERIALS & INTERFACES 2019; 11:44458-44465. [PMID: 31718128 DOI: 10.1021/acsami.9b16983] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Plasmonic metal nanostructures with nanogaps have attracted great interest owing to their controllable optical properties and intense electromagnetic fields that can be useful for a variety of applications, but precise and reliable control of nanogaps in three-dimensional nanostructures remains a great challenge. Here, we report the control of nanojunctions of hollow porous gold nanoshell (HPAuNS) structures by a facile oxygen plasma-etching process and the influence of changes in nanocrevices of the interparticle junction on the optical and sensing characteristics of HPAuNSs. We demonstrate a high tunability of the localized surface plasmon resonance (LSPR) peaks and surface-enhanced Raman scattering (SERS) detection of rhodamine 6G (R6G) using HPAuNS structures with different nanojunctions by varying the degree of gold sintering. As the neck region of the nanojunction is further sintered, the main LSPR peak shifts from 785 to 1350 nm with broadening because the charge transfer plasmon mode becomes more dominant than the dipolar plasmon mode, resulting from the increase of conductance at the interparticle junctions. In addition, it is demonstrated that an increase in the sharpness of the nanojunction neck can enhance the SERS enhancement factor of the HPAuNS by up to 4.8-fold. This enhancement can be ascribed to the more intense local electromagnetic fields at the sharper nanocrevices of interparticle junctions. The delicate change of nanojunction structures in HPAuNSs can significantly affect their optical spectrum and electromagnetic field intensity, which are critical for their practical use in a SERS-based analytical sensor as well as multiple-wavelength compatible applications.
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34
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Wang H, Rao H, Luo M, Xue X, Xue Z, Lu X. Noble metal nanoparticles growth-based colorimetric strategies: From monocolorimetric to multicolorimetric sensors. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.06.020] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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35
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Zheng F, Ke W, Shi L, Liu H, Zhao Y. Plasmonic Au-Ag Janus Nanoparticle Engineered Ratiometric Surface-Enhanced Raman Scattering Aptasensor for Ochratoxin A Detection. Anal Chem 2019; 91:11812-11820. [PMID: 31424931 DOI: 10.1021/acs.analchem.9b02469] [Citation(s) in RCA: 106] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ochratoxin A (OTA), a toxic mycotoxin, poses severe risks to environment and human health. Herein, we develop a ratiometric surface-enhanced Raman scattering (SERS) aptasensor based on internal standard (IS) methods for the sensitive and reproducible quantitative detection of OTA. Au-Ag Janus nanoparticles (NPs) are successfully synthesized under the guidance of 2-mercaptobenzoimidazole-5-carboxylic acid (MBIA), which possesses intrinsic Raman signals, thus no additional modification with a Raman reporter on NPs is required. In addition, Au-Ag Janus NPs exhibit amplified and stable SERS activity. MXenes nanosheets generate a unique and stable Raman signal, making them an ideal IS for quantitative Raman analysis. In principle, Au-Ag Janus NPs are assembled with MXenes nanosheets depending on hydrogen bond and the chelation interaction between MXenes nanosheets and OTA aptamers. In the presence of OTA, Au-Ag Janus NPs are dissociated from MXenes nanosheets due to the formation of aptamer/OTA complex, leading to the attenuation of Raman signal of Au-Ag Janus NPs, and meanwhile, the signal of MXenes nanosheets remain constant. Quantitatively, upon correction by the IS Raman signals, sensitive and quantitative detection can be achieved with the limit of detection (LOD) of 1.28 pM for OTA. Our results suggest that this ratiometric SERS aptasensor is a powerful tool which shows great promise for applications in complex systems.
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Affiliation(s)
- Fangjie Zheng
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , Wuxi , Jiangsu 214122 , China
| | - Wei Ke
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , Wuxi , Jiangsu 214122 , China
| | - Lixia Shi
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , Wuxi , Jiangsu 214122 , China
| | - Han Liu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , Wuxi , Jiangsu 214122 , China
| | - Yuan Zhao
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering , Jiangnan University , Wuxi , Jiangsu 214122 , China
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36
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Kolosovas-Machuca ES, Cuadrado A, Ojeda-Galván HJ, Ortiz-Dosal LC, Hernández-Arteaga AC, Rodríguez-Aranda MDC, Navarro-Contreras HR, Alda J, González FJ. Detection of Histamine Dihydrochloride at Low Concentrations Using Raman Spectroscopy Enhanced by Gold Nanostars Colloids. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E211. [PMID: 30736293 PMCID: PMC6410180 DOI: 10.3390/nano9020211] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 01/16/2019] [Accepted: 01/22/2019] [Indexed: 01/06/2023]
Abstract
In this paper, we report a fast and easy method to detect histamine dihydrochloride using gold nanostars in colloidal aqueous solution as a highly active SERS platform with potential applications in biomedicine and food science. This colloid was characterized with SEM and UV⁻Vis spectroscopy. Also, numerical calculations were performed to estimate the plasmonic resonance and electric field amplification of the gold nanoparticles to compare the difference between nanospheres and nanostars. Finally, aqueous solutions of histamine dihydrochloride were prepared in a wide range of concentrations and the colloid was added to carry out SERS. We found SERS amplified the Raman signal of histamine by an enhancement factor of 1 . 0 × 10 7 , demonstrating the capability of the method to detect low concentrations of this amine molecule.
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Affiliation(s)
- Eleazar Samuel Kolosovas-Machuca
- Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología, Universidad Autónoma de San Luis Potosí, 78210 San Luis Potosí, Mexico.
| | - Alexander Cuadrado
- Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología, Universidad Autónoma de San Luis Potosí, 78210 San Luis Potosí, Mexico.
- Applied Optics Complutense Group, Faculty of Optics and Optometry, University Complutense of Madrid, Av. Arcos de Jalon, 118, 28037 Madrid, Spain.
| | - Hiram Joazet Ojeda-Galván
- Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología, Universidad Autónoma de San Luis Potosí, 78210 San Luis Potosí, Mexico.
- Instituto de Física Luis Terrazas, Benemerita Universidad Autónoma de Puebla, Av. San Claudio, 18, 72570 Puebla, Mexico.
| | - Luis Carlos Ortiz-Dosal
- Doctorado Institucional en Ingeniería y Ciencias de Materiales, Universidad Autónoma de San Luis Potosí, 78210 San Luis Potosí, Mexico.
| | - Aida Catalina Hernández-Arteaga
- Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología, Universidad Autónoma de San Luis Potosí, 78210 San Luis Potosí, Mexico.
| | - Maria Del Carmen Rodríguez-Aranda
- Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología, Universidad Autónoma de San Luis Potosí, 78210 San Luis Potosí, Mexico.
| | - Hugo Ricardo Navarro-Contreras
- Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología, Universidad Autónoma de San Luis Potosí, 78210 San Luis Potosí, Mexico.
| | - Javier Alda
- Applied Optics Complutense Group, Faculty of Optics and Optometry, University Complutense of Madrid, Av. Arcos de Jalon, 118, 28037 Madrid, Spain.
| | - Francisco Javier González
- Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología, Universidad Autónoma de San Luis Potosí, 78210 San Luis Potosí, Mexico.
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Smith JD, Bunch CM, Li Y, Koczkur KM, Skrabalak SE. Surface versus solution chemistry: manipulating nanoparticle shape and composition through metal-thiolate interactions. NANOSCALE 2019; 11:512-519. [PMID: 30543237 DOI: 10.1039/c8nr07233g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Nanostructures with well-defined crystallite sizes, shapes, and compositions are finding use in areas such as energy, security, and even medicine. Seeded growth is a promising strategy to achieve shape-controlled nanostructures, where specific structural features are often directed by the underlying symmetry of the seeds. Here, thiophenol derivatives capable of different metal-thiolate interactions were introduced into the synthesis of Au/Pd nanostructures by seed-mediated co-reduction. Our systematic analysis reveals that the symmetry and composition of the bimetallic nanoparticles (NPs) can be tuned as a function of additive binding strength and concentration, with symmetry reduction observed in some cases. Furthermore, additives with both thiol and amine functionalities facilitate random branching on the octahedral seed. Significantly, this synthetic versatility arises because the thiophenol derivatives modify both the surface capping of the growing nanostructures and the local ligand environment of the metal precursors, highlighting how the dual roles of synthesis components can be exploited to achieve high quality bimetallic nanostructures.
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Affiliation(s)
- Joshua D Smith
- Indiana University, Department of Chemistry, 800 E. Kirkwood Ave., Bloomington, IN 47405, USA.
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38
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Tian S, You W, Shen Y, Gu X, Ge M, Ahmadi S, Ahmad S, Kraatz HB. Facile synthesis of silver-rich Au/Ag bimetallic nanoparticles with highly active SERS properties. NEW J CHEM 2019. [DOI: 10.1039/c9nj02879j] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A one-pot route to the synthesis of Au/Ag bimetallic nanoparticles with a high SERS activity for detection of proteins at low concentration.
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Affiliation(s)
- Shu Tian
- School of Chemistry and Chemical Engineering
- Nantong University
- Nantong 226019
- P. R. China
- Department of Physical and Environmental Science
| | - Wenjing You
- School of Chemistry and Chemical Engineering
- Nantong University
- Nantong 226019
- P. R. China
| | - Yi Shen
- School of Chemistry and Chemical Engineering
- Nantong University
- Nantong 226019
- P. R. China
| | - Xuefang Gu
- School of Chemistry and Chemical Engineering
- Nantong University
- Nantong 226019
- P. R. China
- Department of Physical and Environmental Science
| | - Ming Ge
- School of Chemistry and Chemical Engineering
- Nantong University
- Nantong 226019
- P. R. China
| | - Soha Ahmadi
- Department of Physical and Environmental Science
- University of Toronto at Scarborough
- Toronto
- Canada
| | - Syed Ahmad
- Department of Physical and Environmental Science
- University of Toronto at Scarborough
- Toronto
- Canada
| | - Heinz-Bernhard Kraatz
- Department of Physical and Environmental Science
- University of Toronto at Scarborough
- Toronto
- Canada
- Department of Chemistry
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Luo X, Tsai D, Gu M, Hong M. Extraordinary optical fields in nanostructures: from sub-diffraction-limited optics to sensing and energy conversion. Chem Soc Rev 2019; 48:2458-2494. [PMID: 30839959 DOI: 10.1039/c8cs00864g] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Along with the rapid development of micro/nanofabrication technology, the past few decades have seen the flourishing emergence of subwavelength-structured materials and interfaces for optical field engineering at the nanoscale. Three remarkable properties associated with these subwavelength-structured materials are the squeezed optical fields beyond the diffraction limit, gradient optical fields in the subwavelength scale, and enhanced optical fields that are orders of magnitude greater than the incident field. These engineered optical fields have inspired fundamental and practical advances in both engineering optics and modern chemistry. The first property is the basis of sub-diffraction-limited imaging, lithography, and dense data storage. The second property has led to the emergence of a couple of thin and planar functional optical devices with a reduced footprint. The third one causes enhanced radiation (e.g., fluorescence), scattering (e.g., Raman scattering), and absorption (e.g., infrared absorption and circular dichroism), offering a unique platform for single-molecule-level biochemical sensing, and high-efficiency chemical reaction and energy conversion. In this review, we summarize recent advances in subwavelength-structured materials that bear extraordinary squeezed, gradient, and enhanced optical fields, with a particular emphasis on their optical and chemical applications. Finally, challenges and outlooks in this promising field are discussed.
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Affiliation(s)
- Xiangang Luo
- State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, 610209, China.
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