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Park J, Chai K, Kim W, Yoon T, Park H, Kim W, You J, Na S, Park J. Highly enhanced Hg 2+ detection using optimized DNA and a double coffee ring effect-based SERS map. Biosens Bioelectron 2024; 264:116646. [PMID: 39142231 DOI: 10.1016/j.bios.2024.116646] [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: 03/18/2024] [Revised: 07/30/2024] [Accepted: 08/07/2024] [Indexed: 08/16/2024]
Abstract
Hg2+ is a highly toxic heavy metal ion that poses serious risks to human health and the environment. Due to its tendency to accumulate, it can easily enter the human body through the food chain, making it crucial to develop detection sensors that mimic real environmental conditions. To achieve this, our study employed a surface-enhanced Raman scattering (SERS) sensor using two strategies. First, we designed a highly selective probe by optimizing the probe and reporter DNA strands to bind Hg2+ within a thymine-thymine mismatch. Second, we used the double coffee ring effect to concentrate the optimized probe DNA. These two strategies greatly enhanced the SERS signal, resulting in a sensor with exceptional sensitivity, a low detection limit of 208.71 fM, and superior selectivity for Hg2+. The practical application of the sensor was demonstrated by successfully detecting Hg2+ in drinking water, tap water, canned tuna, and tuna sashimi. Additionally, the experimental results were presented in a pizza-shaped SERS mapping image, allowing users to estimate Hg2+ concentrations through color, providing a user-friendly and intuitive method for data comprehension and analysis. Our study presents a promising approach for sensitive and reliable Hg2+ detection, with potential implications for environmental monitoring and food safety.
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Affiliation(s)
- Joohyung Park
- Department of Biomechatronics Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Kyunghwan Chai
- Department of Biomechatronics Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Woong Kim
- Holonyak Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Taeyoung Yoon
- Department of Mechanical Engineering, Changwon National University, Changwon, 51140, Republic of Korea
| | - Hyunjun Park
- Department of Biomechatronics Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Woochang Kim
- Department of Biomechatronics Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Juneseok You
- Department of Mechanical Engineering, Kumoh National Institute of Technology, 39177, Gumi, Republic of Korea.
| | - Sungsoo Na
- Department of Mechanical Engineering, Korea University, Seoul, 02841, Republic of Korea.
| | - Jinsung Park
- Department of Biomechatronics Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea; Department of MetaBioHealth, Sungkyunkwan University, Suwon, 16419, Republic of Korea; Department of Biopharmaceutical Convergence, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
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2
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Zhang J, Chen Z, Lv H, Liang J, Yan C, Song C, Wang L. Rapid and accurate SERS assay of disease-related nucleic acids based on isothermal cascade signal amplifications of CRISPR/Cas13a system and catalytic hairpin assembly. Biosens Bioelectron 2024; 253:116196. [PMID: 38467101 DOI: 10.1016/j.bios.2024.116196] [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: 12/24/2023] [Revised: 02/21/2024] [Accepted: 03/05/2024] [Indexed: 03/13/2024]
Abstract
Developing rapid, accurate and convenient nucleic acid diagnostic techniques is essential for the prevention and control of contagious diseases that are prone to gene mutations and may have homologous sequences, especially emerging infectious diseases such as the SARS-CoV-2 pandemic. Herein, a one-pot SERS assay integrating isothermal cascade signal amplification strategy (i.e., CRISPR/Cas13a system (Cas13a) and catalytic hairpin assembly (CHA), Cas13a-CHA) and SERS-active silver nanorods (AgNRs) sensing chips was proposed for rapid and accurate detection of disease-related nucleic acids. Taking SARS-CoV-2 RNA assay as a model, the Cas13a-CHA based SERS sensing strategy can achieve ultra-high sensitivity low to 5.18 × 102 copies·mL-1 within 60 min, and excellent specificity, i.e., not only the ability to identify SARS-CoV-2 RNA from gene mutations, but also incompatibility with coronaviruses such as severe acute respiratory syndrome (SARS-CoV), Middle East respiratory syndrome (MERS-CoV), and other respiratory viruses. The proposed Cas13a-CHA based SERS assay for SARS-CoV-2 RNA has satisfactory sensitivity, specificity, uniformity, and repeatability, and can be easily expanded and universalized for screening different viruses, which is expected to promise as a crucial role for diagnosis of disease-related nucleic acids in various medical application scenarios.
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Affiliation(s)
- Jingjing Zhang
- State Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China
| | - Zhilong Chen
- State Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China
| | - Huiming Lv
- State Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China
| | - Jing Liang
- State Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China
| | - Chenlong Yan
- State Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China
| | - Chunyuan Song
- State Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China; State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China.
| | - Lianhui Wang
- State Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing, 210023, China.
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3
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Zhao Z, Cao M, Wei D, Li X, Wang M, Zhai W. Constructing graphene oxide/Au nanoparticle cellulose membranes for SERS detection of mixed pesticide residues in edible chrysanthemum. Analyst 2024; 149:1151-1159. [PMID: 38259149 DOI: 10.1039/d3an02030d] [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: 01/24/2024]
Abstract
Edible chrysanthemum is widely cultivated and used as an important ingredient of medicine, tea and multifunctional food. During the planting of chrysanthemum, pesticides are extensively used for preventing plant diseases and insect pests. To ensure the food safety of edible chrysanthemum, rapid detection methods are urgently needed for on-site inspection. In this study, a graphene oxide/Au nanoparticle (GO/Au NP) cellulose substrate was prepared through layer-by-layer assembly of GO and Au NPs on a mixed cellulose ester membrane. Surface-enhanced Raman spectroscopy (SERS) detection of four types of organophosphorus and organosulfur pesticides was achieved by filtering the extracting solution through the substrate and analysing SERS spectra. Qualitative and semi-quantitative detection of fenthion, phoxim, isocarbophos and thiram was accomplished with the detection limits of 38.01, 8.13, 48.97 and 8.74 ng mL-1, respectively. A spiking experiment further demonstrated the feasibility of this method for rapid and on-site detection of mixed pesticides in chrysanthemum. This study provides a new approach for rapid detection of multiple hazardous substances in flowering and herbal plants.
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Affiliation(s)
- Zhilei Zhao
- School of Quality and Technical Supervision, Hebei University, Baoding 071002, China
| | - Mingshuo Cao
- School of Quality and Technical Supervision, Hebei University, Baoding 071002, China
- Institute of Quality Standard and Testing Technology, Beijing Academy of Agriculture and Forestry Science, Beijing 100097, China.
| | - Dizhe Wei
- Institute of Quality Standard and Testing Technology, Beijing Academy of Agriculture and Forestry Science, Beijing 100097, China.
| | - Xiangyang Li
- Beijing Laboratory of Food Quality and Safety, Beijing Key Laboratory of Detection and Control of Spoilage Organisms and Pesticide Residue in Agricultural Product, College of Food Science and Engineering, Beijing University of Agriculture, Beijing 102206, China
| | - Meng Wang
- Institute of Quality Standard and Testing Technology, Beijing Academy of Agriculture and Forestry Science, Beijing 100097, China.
| | - Wenlei Zhai
- Institute of Quality Standard and Testing Technology, Beijing Academy of Agriculture and Forestry Science, Beijing 100097, China.
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Zheng L, Hu F, Zhao Y, Zhu J, Wang X, Su M, Liu H. Core-Satellite Nanoassemblies as SPR/SERS Dual-Mode Plasmonic Sensors for Sensitively Detecting Ractopamine in Complex Media. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:20793-20800. [PMID: 38095450 DOI: 10.1021/acs.jafc.3c06475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Highly sensitive and reliable detection of β-adrenergic agonists is especially necessary due to the illegal abuse of growth-promoting feed additives. Here, we develop a novel surface plasmon resonance/surface-enhanced Raman scattering (SPR/SERS) dual-mode plasmonic sensor based on core-satellite nanoassemblies for the highly sensitive and reliable detection of ractopamine (RAC). The addition of RAC results in the decomposition of core-satellite nanoassemblies and consequently changes the Rayleigh scattering color of dark-field microscopy (DFM) images and the Raman scattering intensity of SERS spectra. The excellent sensitivity, specificity, and uniformity of this strategy were confirmed by detecting RAC in various complex media in the farm-to-table chain, and the limit of detection (LOD) was 0.03 ng/mL in an aqueous solution. In particular, the convenient access to livestock sewage not only ensures animal welfare but also provides great convenience for the market regulation of β-agonists. The success of our on-site strategy only with a portable Raman device promises great application prospects for β-agonist detection.
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Affiliation(s)
- Liqin Zheng
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, School of Food and Biological Engineering, Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, P. R. China
| | - Fan Hu
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, School of Food and Biological Engineering, Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, P. R. China
| | - Yueyue Zhao
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, School of Food and Biological Engineering, Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, P. R. China
| | - Juanjuan Zhu
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, School of Food and Biological Engineering, Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, P. R. China
| | - Xian Wang
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, School of Food and Biological Engineering, Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, P. R. China
| | - Mengke Su
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, School of Food and Biological Engineering, Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, P. R. China
| | - Honglin Liu
- China Light Industry Key Laboratory of Meat Microbial Control and Utilization, School of Food and Biological Engineering, Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, P. R. China
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5
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Liao L, Du S, Ding Y, Su M, Yu T, Duan T, Li Q, He S, Wang H, Liu H. Highly stable surface-enhanced Raman spectroscopy assay on abnormal thrombin levels in the blood plasma of cancer patients. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:4328-4333. [PMID: 34477192 DOI: 10.1039/d1ay01002f] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The accurate discrimination of specific protein levels in the blood of cancer patients is of great importance in clinical diagnostics and prognosis. Here, we report a double-aptamer sandwich strategy on plasmonic magnetic beads (MBs) for a dual-reporter surface-enhanced Raman spectroscopy (SERS) assay for assessing abnormal thrombin (TB) levels in the blood plasma of cancer patients. This SERS assay demonstrated a linear analysis range of 20-400 pM in serum with a limit of detection as low as 20 pM, and to the best of our knowledge, this represents the first attempt to highly stably discriminate an abnormal TB level in the plasma of clinical cancer patients. Two recognition elements of TB aptamers provided high specificity and the dual-reporter assay demonstrated greatly reduced false-positive signals. The sandwich complex produced an efficient SERS "hot spot" to make up for the flaws of the insufficient enhancement of monomer metal nanoparticles. The plasmonic MBs enabled the direct tracking of ultratrace proteins in plasma while avoiding complicated pretreatment with only a few washing steps required. As a preliminary exploration, our report details a new potential tool with high sensitivity, selectivity, and practicality for disease-related protein testing in clinical diagnostics and prognosis.
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Affiliation(s)
- Lingling Liao
- First Affiliated Hospital of Anhui Medical University, Hefei 230022, China.
- Institute of Physical Science and Information Technology, Anhui University, Hefei, Anhui, 230039, China.
| | - Shanshan Du
- Institute of Physical Science and Information Technology, Anhui University, Hefei, Anhui, 230039, China.
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Yan Ding
- First Affiliated Hospital of Anhui Medical University, Hefei 230022, China.
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Mengke Su
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Ting Yu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, China
| | - Tingmei Duan
- First Affiliated Hospital of Anhui Medical University, Hefei 230022, China.
| | - Qinghe Li
- First Affiliated Hospital of Anhui Medical University, Hefei 230022, China.
| | - Shengnan He
- Institute of Physical Science and Information Technology, Anhui University, Hefei, Anhui, 230039, China.
| | - Hongyan Wang
- First Affiliated Hospital of Anhui Medical University, Hefei 230022, China.
| | - Honglin Liu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, China
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6
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Li M, Li J, Zhang X, Yao M, Li P, Xu W. Simultaneous detection of tumor-related mRNA and miRNA in cancer cells with magnetic SERS nanotags. Talanta 2021; 232:122432. [PMID: 34074418 DOI: 10.1016/j.talanta.2021.122432] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 04/07/2021] [Accepted: 04/10/2021] [Indexed: 12/13/2022]
Abstract
The design of simultaneous detection method has broad prospects for cancer diagnosis and prognosis. Herein, we reported a low cost and sensitive SERS sensing platform for simultaneous p21 mRNA and miRNA-21 detection based on duplex-specific nuclease signal amplification (DSNSA) plus multifunctional Fe3O4@SiO2 magnetic nanoparticles (Fe3O4@SiO2 MNPs). Here, Fe3O4@SiO2 MNPs were used as a separation substrate, and Au@AgNPs served as stable and ultrasensitive SERS nanotags. Firstly, Au@AgNPs and Fe3O4@SiO2 MNPs were attached to both ends of capture probe (CP) by covalent bonds. Under the assistance of the target p21 mRNA and miRNA-21, DNA (CP) of the DNA-RNA heteroduplexes could be specifically degraded by DSN and the SERS nanotags that were released from the surface of Fe3O4@SiO2 MNPs. Meanwhile, the target p21 mRNA and miRNA-21 were released and then involved in the next round of signal reactions. The proposed strategy allowed quantitative detection of p21 mRNA and miRNA-21 and the limit of detection (LOD) was 0.12 fM and 0.17 fM, respectively. This method gives a great potential for multiplex detection of biological molecules.
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Affiliation(s)
- Man Li
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
| | - Jingya Li
- Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, China; Department of Biological Physics, University of Science and Technology of China, Hefei, 230026, China
| | - Xiang Zhang
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
| | - Mingming Yao
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China
| | - Pan Li
- Institute of Health & Medical Technology Hefei Institutes of Physical Science, CAS, Hefei, 230021, China.
| | - Weiping Xu
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, 230001, China; Anhui Provincial Key Laboratory of Tumor Immunotherapy and Nutrition Therapy, Anhui, Hefei, 230001, China.
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7
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Surface-enhanced Raman spectroscopywith gold nanorods modified by sodium citrate and liquid-liquid interface self-extraction for detection of deoxynivalenol in Fusarium head blight-infected wheat kernels coupled with a fully convolution network. Food Chem 2021; 359:129847. [PMID: 33964656 DOI: 10.1016/j.foodchem.2021.129847] [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: 09/30/2020] [Revised: 03/28/2021] [Accepted: 04/10/2021] [Indexed: 12/20/2022]
Abstract
Surface-enhanced Raman spectroscopy (SERS) and deep learning network were adopted to develop a detection method for deoxynivalenol (DON) residues in Fusarium head blight (FHB)-infected wheat kernels. First, the liquid-liquid interface self-extraction was conducted for the rapid separation of DON in samples. Then, the gold nanorods modified with sodium citrate (Cit-AuNRs) were prepared as substrate for a gigantic enhancement of SERS signal. Results showed that the spectral characteristic peaks for DON residues of 99.5-0.5 mg/L were discernible with the relative standard deviation of 4.2%, with the limit of detection of 0.11 mg/L. Meanwhile, the fully convolutional network for the spectra of matrix input form was developed and obtained the optimal quantitative performance, with a root-mean-square error of prediction of 4.41 mg/L and coefficient of determination of prediction of 0.9827. Thus, the proposed method provides a simple, sensitive, and intelligent detection for DON in FHB-infected wheat kernels.
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8
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Au@Ag core-shell nanoparticles for microRNA-21 determination based on duplex-specific nuclease signal amplification and surface-enhanced Raman scattering. Mikrochim Acta 2020; 187:384. [DOI: 10.1007/s00604-020-04330-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 05/15/2020] [Indexed: 12/18/2022]
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9
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Weng S, Yuan H, Zhang X, Li P, Zheng L, Zhao J, Huang L. Deep learning networks for the recognition and quantitation of surface-enhanced Raman spectroscopy. Analyst 2020; 145:4827-4835. [PMID: 32515435 DOI: 10.1039/d0an00492h] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Surface-enhanced Raman spectroscopy (SERS) based on machine learning methods has been applied in material analysis, biological detection, food safety, and intelligent analysis. However, machine learning methods generally require extra preprocessing or feature engineering, and handling large-scale data using these methods is challenging. In this study, deep learning networks were used as fully connected networks, convolutional neural networks (CNN), fully convolutional networks (FCN), and principal component analysis networks (PCANet) to determine their abilities to recognise drugs in human urine and measure pirimiphos-methyl in wheat extract in the two input forms of a one-dimensional vector or a two-dimensional matrix. The best recognition result for drugs in urine with an accuracy of 98.05% in the prediction set was obtained using CNN with spectra as input in the matrix form. The optimal quantitation for pirimiphos-methyl was obtained using FCN with spectra in the matrix form, and the analysis was accomplished with a determination coefficient of 0.9997 and a root mean square error of 0.1574 in the prediction set. These networks performed better than the common machine learning methods. Overall, the deep learning networks provide feasible alternatives for the recognition and quantitation of SERS.
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Affiliation(s)
- Shizhuang Weng
- National Engineering Research Center for Agro-Ecological Big Data Analysis & Application, Anhui University, Hefei 230601, China.
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10
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Murugesan B, Yang J. Tunable Coffee Ring Formation on Polycarbonate Nanofiber Film for Sensitive SERS Detection of Phenylalanine in Urine. ACS OMEGA 2019; 4:14928-14936. [PMID: 31552333 PMCID: PMC6751712 DOI: 10.1021/acsomega.9b01686] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Accepted: 08/21/2019] [Indexed: 05/24/2023]
Abstract
A new method based on the coffee ring effect was developed for improving the sensitivity, simplicity, and robustness of surface-enhanced Raman scattering (SERS) in determining trace levels of analytes. In this method, a polyvinylpyrrolidone (PVP)-stabilized silver colloidal (AgC) solution was first prepared and mixed with a sample solution. Following deposition of the mixture solution on a solid substrate with a rough surface, a coffee ring was formed once the solvent had evaporated. The formation of a coffee ring not only concentrated the analyte but also reduced the space between silver nanoparticles (AgNPs) to strengthen the hotspot effect, thereby considerably improving SERS sensitivity. To strengthen the coffee ring effect further, the surface roughness of the solid support and PVP content of the AgC solution were investigated. The results indicated that an increase in surface roughness reduced the size of the coffee rings, whereas the addition of PVP not only stabilized the AgNPs but also improved the compactness of the coffee rings. When applying the proposed method to determine the phenylalanine (Phe) level in urine for rapid screening of the phenylketonuria disorder, strong chemical interference from uric acid (UA), which is a major component in urine, was observed. To minimize the interference from UA, ZnO powder was applied to the urine sample to adsorb UA prior to SERS detection. After cleaning by using ZnO, the SERS signals of Phe were revealed for quantitative purposes. Under the optimized conditions, both the sensitivity and reproducibility of SERS measurement considerably improved. Quantitative analyses revealed that the developed method is highly feasible for the rapid determination of Phe in real samples.
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Affiliation(s)
| | - Jyisy Yang
- E-mail: . Phone: +886-422840411 ext.
514. Fax: +886-422862547
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11
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Wang C, Wang C, Wang X, Wang K, Zhu Y, Rong Z, Wang W, Xiao R, Wang S. Magnetic SERS Strip for Sensitive and Simultaneous Detection of Respiratory Viruses. ACS APPLIED MATERIALS & INTERFACES 2019; 11:19495-19505. [PMID: 31058488 DOI: 10.1021/acsami.9b03920] [Citation(s) in RCA: 163] [Impact Index Per Article: 32.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Rapid and early diagnosis of respiratory viruses is key to preventing infections from spreading and guiding treatments. Here, we developed a sensitive and quantitative surface-enhanced Raman scattering-based lateral flow immunoassay (SERS-based LFIA) strip for simultaneous detection of influenza A H1N1 virus and human adenovirus (HAdV) by using Fe3O4@Ag nanoparticles as magnetic SERS nanotags. The new type of Fe3O4@Ag magnetic tags, which were conjugated with dual-layer Raman dye molecules and target virus-capture antibodies, performs the following functions: specific recognition and magnetic enrichment of target viruses in the solution and SERS detection of the viruses on the strip. Based on this strategy, the magnetic SERS strip can directly be used for real biological samples without any sample pretreatment steps. The limits of detection for H1N1 and HAdV were 50 and 10 pfu/mL, respectively, which were 2000 times more sensitive than those from the standard colloidal gold strip method. Moreover, the proposed strip is easy to operate, rapid, stable, and can achieve high throughput and is thus a potential tool for early detection of virus infection.
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Affiliation(s)
- Chongwen Wang
- Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Disease , Beijing Institute of Radiation Medicine , Beijing 100850 , P. R. China
| | - Chaoguang Wang
- College of Mechatronics Engineering and Automation , National University of Defense Technology , Changsha 410073 , P. R. China
| | - Xiaolong Wang
- Shandong Provincial Key Laboratory of Traditional Chinese Medicine for Basic research , Shandong University of Traditional Chinese Medicine , Jinan 250355 , P. R. China
| | - Keli Wang
- Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Disease , Beijing Institute of Radiation Medicine , Beijing 100850 , P. R. China
| | - Yanhui Zhu
- Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Disease , Beijing Institute of Radiation Medicine , Beijing 100850 , P. R. China
| | - Zhen Rong
- Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Disease , Beijing Institute of Radiation Medicine , Beijing 100850 , P. R. China
| | | | - Rui Xiao
- Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Disease , Beijing Institute of Radiation Medicine , Beijing 100850 , P. R. China
| | - Shengqi Wang
- Beijing Key Laboratory of New Molecular Diagnosis Technologies for Infectious Disease , Beijing Institute of Radiation Medicine , Beijing 100850 , P. R. China
- Shandong Provincial Key Laboratory of Traditional Chinese Medicine for Basic research , Shandong University of Traditional Chinese Medicine , Jinan 250355 , P. R. China
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12
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Innocenzi P, Malfatti L. Mesoporous materials as platforms for surface-enhanced Raman scattering. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.02.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Han W, Stepula E, Philippi M, Schlücker S, Steinhart M. Evaluation of 3D gold nanodendrite layers obtained by templated galvanic displacement reactions for SERS sensing and heterogeneous catalysis. NANOSCALE 2018; 10:20671-20680. [PMID: 30397700 DOI: 10.1039/c8nr07164k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Dense layers of overlapping three-dimensional (3D) gold nanodendrites characterized by high specific surfaces as well as by abundance of sharp edges and vertices creating high densities of SERS hotspots are promising substrates for SERS-based sensing and catalysis. We have evaluated to what extent structural features of 3D gold nanodendrite layers can be optimized by the initiation of 3D gold nanodendrite growth at gold particles rationally positioned on silicon wafers. For this purpose, galvanic displacement reactions yielding 3D gold nanodendrites were guided by hexagonal arrays of parent gold particles with a lattice constant of 1.5 μm obtained by solid-state dewetting of gold on topographically patterned silicon wafers. Initiation of the growth of dendritic features at the edges of the gold particles resulted in the formation of 3D gold nanodendrites while limitation of dendritic growth to the substrate plane was prevented. The regular arrangement of the parent gold particles supported the formation of dense layers of overlapping 3D gold nanodendrites that were sufficiently homogeneous within the resolution limits of Raman microscopy. Consequently, SERS mapping experiments revealed a reasonable degree of uniformity. The proposed preparation algorithm comprises only bottom-up process steps that can be carried out without the use of costly instrumentation.
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Affiliation(s)
- Weijia Han
- Institut für Chemie neuer Materialien, Universität Osnabrück, Barbarastr. 7, 49076 Osnabrück, Germany.
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Wang Z, Zong S, Wang Y, Li N, Li L, Lu J, Wang Z, Chen B, Cui Y. Screening and multiple detection of cancer exosomes using an SERS-based method. NANOSCALE 2018; 10:9053-9062. [PMID: 29718044 DOI: 10.1039/c7nr09162a] [Citation(s) in RCA: 173] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
As a kind of most important cancer biomarker, exosomes are getting more frequently investigated in cancer diagnosis. In this study, we proposed an SERS-based method for the screening and simultaneous multiple detection of exosomes using magnetic substrates and SERS probes. Specifically, the capturing substrates are achieved using gold shell magnetic nanobeads modified by aptamers, which can capture most kinds of exosomes by recognizing the generic surface protein CD63. Moreover, the SERS probes are made of gold nanoparticles decorated with a Raman reporter and a specific aptamer for targeting exosomes. Further, for the simultaneous detection of multiple kinds of exosomes, three kinds of SERS probes were designed using different SERS reporters. While detecting specific kinds of exosomes, the capturing substrates were mixed with these three kinds of SERS probes. When the target exosome is present, an apta-immunocomplex can be formed among the target exosomes, the substrate, and the corresponding kind of SERS probes, and the other non-specific SERS probes remain in the suspension. Hence, an SERS signal with a decreased intensity will be detected in the supernatant, indicating the presence of the target exosomes. Finally, this detection method has also been successfully employed for the detection of exosomes in real blood samples; this proves that the proposed SERS-based method is a promising tool for clinical cancer screening based on exosomes.
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Affiliation(s)
- Zhile Wang
- Advanced Photonics Center, Southeast University, Nanjing 210096, China.
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15
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Wang K, Wang Y, Wang C, Jia X, Li J, Xiao R, Wang S. Facile synthesis of high-performance SiO2@Au core–shell nanoparticles with high SERS activity. RSC Adv 2018; 8:30825-30831. [PMID: 35548738 PMCID: PMC9085469 DOI: 10.1039/c8ra05213a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 08/28/2018] [Indexed: 12/14/2022] Open
Abstract
This study proposes a facile and general method for fabricating a wide range of high-performance SiO2@Au core–shell nanoparticles (NPs).
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Affiliation(s)
- Keli Wang
- Anhui Medical University
- Hefei
- PR China
- Beijing Institute of Radiation Medicine
- Beijing 100850
| | - Yanping Wang
- Beijing Institute of Radiation Medicine
- Beijing 100850
- PR China
| | - Chongwen Wang
- Beijing Institute of Radiation Medicine
- Beijing 100850
- PR China
- College of Life Science
- Anhui Agricultural University
| | - Xiaofei Jia
- Beijing Institute of Radiation Medicine
- Beijing 100850
- PR China
| | - Jia Li
- Beijing Institute of Radiation Medicine
- Beijing 100850
- PR China
| | - Rui Xiao
- Anhui Medical University
- Hefei
- PR China
- Beijing Institute of Radiation Medicine
- Beijing 100850
| | - Shengqi Wang
- Anhui Medical University
- Hefei
- PR China
- Beijing Institute of Radiation Medicine
- Beijing 100850
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16
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Schechinger M, Marks H, Locke A, Choudhury M, Cote G. Development of a miRNA surface-enhanced Raman scattering assay using benchtop and handheld Raman systems. JOURNAL OF BIOMEDICAL OPTICS 2018; 23:1-11. [PMID: 29313325 DOI: 10.1117/1.jbo.23.1.017002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 12/01/2017] [Indexed: 06/07/2023]
Abstract
DNA-functionalized nanoparticles, when paired with surface-enhanced Raman spectroscopy (SERS), can rapidly detect microRNA. However, widespread use of this approach is hindered by drawbacks associated with large and expensive benchtop Raman microscopes. MicroRNA-17 (miRNA-17) has emerged as a potential epigenetic indicator of preeclampsia, a condition that occurs during pregnancy. Biomarker detection using an SERS point-of-care device could enable prompt diagnosis and prevention as early as the first trimester. Recently, strides have been made in developing portable Raman systems for field applications. An SERS assay for miRNA-17 was assessed and translated from traditional benchtop Raman microscopes to a handheld system. Three different photoactive molecules were compared as potential Raman reporter molecules: a chromophore, malachite green isothiocyanate (MGITC), a fluorophore, tetramethylrhodamine isothiocyanate, and a polarizable small molecule 5,5-dithio-bis-(2-nitrobenzoic acid) (DTNB). For the benchtop Raman microscope, the DTNB-labeled assay yielded the greatest sensitivity under 532-nm laser excitation, but the MGITC-labeled assay prevailed at 785 nm. Conversely, DTNB was preferable for the miniaturized 785-nm Raman system. This comparison showed significant SERS enhancement variation in response to 1-nM miRNA-17, implying that the sensitivity of the assay may be more heavily dependent on the excitation wavelength, instrumentation, and Raman reporter chosen than on the plasmonic coupling from DNA/miRNA-mediated nanoparticle assemblies.
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Affiliation(s)
- Monika Schechinger
- Texas A&M University, Department of Biomedical Engineering, College Station, Texas, United States
| | - Haley Marks
- Texas A&M University, Department of Biomedical Engineering, College Station, Texas, United States
| | - Andrea Locke
- Texas A&M University, Department of Biomedical Engineering, College Station, Texas, United States
| | - Mahua Choudhury
- Texas A&M University, Irma Lerma Rangel College of Pharmacy, College Station, Texas, United States
| | - Gerard Cote
- Texas A&M University, Department of Biomedical Engineering, College Station, Texas, United States
- Texas A&M Engineering Experimentation Station, Center for Remote Health Technologies and Systems, Co, United States
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17
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Chen M, Luo W, Zhang Z, Wang R, Zhu Y, Yang H, Chen X. Synthesis of Multi-Au-Nanoparticle-Embedded Mesoporous Silica Microspheres as Self-Filtering and Reusable Substrates for SERS Detection. ACS APPLIED MATERIALS & INTERFACES 2017; 9:42156-42166. [PMID: 29140677 DOI: 10.1021/acsami.7b16618] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Surface-enhanced Raman-scattering-based (SERS-based) biosensing in biological fluids is constrained by nonspecific macromolecule adsorptions and disposable property of the SERS substrate. Here, novel multi-Au-nanoparticle-embedded mesoporous silica microspheres (AuNPs/mSiO2) were prepared using a one-pot method, which served as reliable substrates for SERS enhancement associated with salient features of self-filtering ability and reusability. The fabrication and physical characterization of AuNPs/mSiO2 microspheres were discussed, and SERS activity of this novel substrate was investigated by using 4-mercaptobenzoic acid (4-MBA) as Raman probe. The responses of our substrates to Raman intensities exhibited a SERS enhancement factor of 2.01 × 107 and high reproducibility (relative standard deviation of 6.13%). Proof-of-concept experiments were designed to evaluate the self-filtering ability of the substrates in bovine serum albumin (BSA) and human serum solution, separately. The results clearly demonstrate that mesoporous SiO2 can serve as a molecular sieve via size exclusion and avoid Raman signal interference of biomacromolecules in biological fluids. Subsequently, feasibility of practical application of AuNPs/mSiO2 microspheres was assessed by quantitative detection of methotrexate (MTA) in serum. The method exhibited good linearity between 1 and 110 nM with the correlation coefficients of 0.996, which proved that the obtained AuNPs/mSiO2 microspheres were good SERS substrates for determination of small biomolecules directly in biological fluids without need of manipulating samples. In addition, the substrate maintained its SERS response during multiple cycles, which was evaluated by recording Raman signals for 4-MBA before and after thermal annealing, thereby demonstrating the high thermostability and satisfactory reusability. These results offered the AuNPs/mSiO2 microspheres attractive advantages in their SERS biosensing.
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Affiliation(s)
- Miao Chen
- College of Chemistry and Chemical Engineering, Central South University , Changsha, Hunan 410083, China
| | - Wen Luo
- College of Chemistry and Chemical Engineering, Central South University , Changsha, Hunan 410083, China
| | - Zhimin Zhang
- College of Chemistry and Chemical Engineering, Central South University , Changsha, Hunan 410083, China
| | - Ranhao Wang
- College of Chemistry and Chemical Engineering, Central South University , Changsha, Hunan 410083, China
| | - Yuqiu Zhu
- College of Chemistry and Chemical Engineering, Central South University , Changsha, Hunan 410083, China
| | - Hua Yang
- College of Chemistry and Chemical Engineering, Central South University , Changsha, Hunan 410083, China
| | - Xiaoqing Chen
- College of Chemistry and Chemical Engineering, Central South University , Changsha, Hunan 410083, China
- Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University , Changsha, Hunan 410083, China
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18
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Zou Y, Yang F, Yuan X, Ma K, Li H, Zhao X, Cai N, Huang X, Liu W. An efficient sodium citrate-promoted synthetic method for the preparation of AuNPs@mesoSiO 2 for surface enhanced Raman spectroscopy in the detection of diluted blood. JOURNAL OF SAUDI CHEMICAL SOCIETY 2017. [DOI: 10.1016/j.jscs.2017.05.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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19
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Wu H, Li X, Xu J, Wang C, Rong Z, Xiao R, Wang S. Study on the SERS substrate composed of Au@Ag core-shell nanoparticles linked to SiO 2 spheres. INORG NANO-MET CHEM 2017. [DOI: 10.1080/15533174.2016.1212232] [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]
Affiliation(s)
- Huiyun Wu
- Beijing Institute of Radiation Medicine, Beijing, P. R. China
- Department of Science and Technology, Academy of Military Medical Sciences, Beijing, P. R. China
| | - Xin Li
- Department of Science and Technology, Academy of Military Medical Sciences, Beijing, P. R. China
| | - Jiawen Xu
- Beijing Institute of Radiation Medicine, Beijing, P. R. China
| | - Congwen Wang
- Beijing Institute of Radiation Medicine, Beijing, P. R. China
| | - Zhen Rong
- Beijing Institute of Radiation Medicine, Beijing, P. R. China
| | - Rui Xiao
- Beijing Institute of Radiation Medicine, Beijing, P. R. China
| | - Shengqi Wang
- Beijing Institute of Radiation Medicine, Beijing, P. R. China
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20
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A microfluidic chip based on an ITO support modified with Ag-Au nanocomposites for SERS based determination of melamine. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1990-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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21
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Hu C, Shen J, Yan J, Zhong J, Qin W, Liu R, Aldalbahi A, Zuo X, Song S, Fan C, He D. Highly narrow nanogap-containing Au@Au core-shell SERS nanoparticles: size-dependent Raman enhancement and applications in cancer cell imaging. NANOSCALE 2016; 8:2090-6. [PMID: 26701141 DOI: 10.1039/c5nr06919j] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Cellular imaging technologies employing metallic surface-enhanced Raman scattering (SERS) tags have gained much interest toward clinical diagnostics, but they are still suffering from poor controlled distribution of hot spots and reproducibility of SERS signals. Here, we report the fabrication and characterization of high narrow nanogap-containing Au@Au core-shell SERS nanoparticles (GCNPs) for the identification and imaging of proteins overexpressed on the surface of cancer cells. First, plasmonic nanostructures are made of gold nanoparticles (∼15 nm) coated with gold shells, between which a highly narrow and uniform nanogap (∼1.1 nm) is formed owing to polyA anchored on the Au cores. The well controlled distribution of Raman reporter molecules, such as 4,4'-dipyridyl (44DP) and 5,5'-dithiobis(2-nitrobenzoic acid) (DTNB), are readily encoded in the nanogap and can generate strong, reproducible SERS signals. In addition, we have investigated the size-dependent SERS activity of GCNPs and found that with the same laser wavelength, the Raman enhancement discriminated between particle sizes. The maximum Raman enhancement was achieved at a certain threshold of particle size (∼76 nm). High narrow nanogap-containing Au@Au core-shell SERS tags (GCTs) were prepared via the functionalization of hyaluronic acid (HA) on GCNPs, which recognized the CD44 receptor, a tumor-associated surface biomarker. And it was shown that GCTs have a good targeting ability to tumour cells and promising prospects for multiplex biomarker detection.
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Affiliation(s)
- Chongya Hu
- School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Jianlei Shen
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Juan Yan
- National Engineering Research Center for Nanotechnology, Shanghai 200241, China. and Shanghai Ocean University, Shanghai 201306, China
| | - Jian Zhong
- National Engineering Research Center for Nanotechnology, Shanghai 200241, China. and Shanghai Ocean University, Shanghai 201306, China
| | - Weiwei Qin
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Rui Liu
- National Engineering Research Center for Nanotechnology, Shanghai 200241, China.
| | - Ali Aldalbahi
- Chemistry Department, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Xiaolei Zuo
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Shiping Song
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Chunhai Fan
- Division of Physical Biology & Bioimaging Center, Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Dannong He
- School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. and National Engineering Research Center for Nanotechnology, Shanghai 200241, China.
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22
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Wang C, Xu Y, Deng C, Liu Z, Wang R, Zhao H. Design and preparation of a recyclable microfluidic SERS chip with integrated Au@Ag/TiO2 NTs. RSC Adv 2016. [DOI: 10.1039/c6ra14947b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Design and preparation of a recyclable microfluidic SERS chip with integrated Au@Ag/TiO2 NTs.
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Affiliation(s)
- Chunyan Wang
- Microsystem Research Center
- School of Optoelectronic Engineering
- Chongqing University
- Chongqing 400044
- China
| | - Yi Xu
- Microsystem Research Center
- School of Optoelectronic Engineering
- Chongqing University
- Chongqing 400044
- China
| | - Conghui Deng
- Bioengineering College
- Chongqing University
- Chongqing 400044
- China
| | - Zhixu Liu
- International R & D Center of Micro-nano Systems and New Materials Technology
- Chongqing University
- Chongqing 400044
- China
- Defense Key Disciplines Laboratory of Novel Micro-nano Devices and System Technology
| | - Rong Wang
- International R & D Center of Micro-nano Systems and New Materials Technology
- Chongqing University
- Chongqing 400044
- China
- Defense Key Disciplines Laboratory of Novel Micro-nano Devices and System Technology
| | - Huazhou Zhao
- International R & D Center of Micro-nano Systems and New Materials Technology
- Chongqing University
- Chongqing 400044
- China
- Defense Key Disciplines Laboratory of Novel Micro-nano Devices and System Technology
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23
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Hardiansyah A, Chen AY, Liao HL, Yang MC, Liu TY, Chan TY, Tsou HM, Kuo CY, Wang JK, Wang YL. Core-shell of FePt@SiO2-Au magnetic nanoparticles for rapid SERS detection. NANOSCALE RESEARCH LETTERS 2015; 10:412. [PMID: 26489855 PMCID: PMC4614849 DOI: 10.1186/s11671-015-1111-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 10/08/2015] [Indexed: 05/23/2023]
Abstract
In this study, multifunctional hybrid nanoparticles composed of iron platinum (FePt), silica (SiO2), and gold nanoparticles (AuNPs) had been developed for surface-enhanced Raman scattering (SERS) application. Core-shell structure of SiO2 and FePt nanoparticles (FePt@SiO2) was fabricated through sol-gel process and then immobilized gold nanoparticles onto the surface of FePt@SiO2, which displays huge Raman enhancement effect and magnetic separation capability. The resulting core-shell nanoparticles were subject to evaluation by transmission electron microscopy (TEM), Energy-dispersive X-ray spectroscopy (EDX), zeta potential measurement, and X-ray photoelectron spectroscopy (XPS). TEM observation revealed that the particle size of resultant nanoparticles displayed spherical structure with the size ~30 nm and further proved the successful immobilization of Au onto the surface of FePt@SiO2. Zeta potential measurement exhibited the successful reaction between FePt@SiO2 and AuNPs. The rapid SERS detection and identification of small biomolecules (adenine) and microorganisms (gram-positive bacteria, Staphylococcus aureus) was conducted through Raman spectroscopy. In summary, the novel core-shell magnetic nanoparticles could be anticipated to apply in the rapid magnetic separation under the external magnetic field due to the core of the FePt superparamagnetic nanoparticles and label-free SERS bio-sensing of biomolecules and bacteria.
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Affiliation(s)
- Andri Hardiansyah
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, 10607, Taiwan.
| | - An-Yu Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, 10607, Taiwan.
| | - Hung-Liang Liao
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, 10607, Taiwan.
| | - Ming-Chien Yang
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, 10607, Taiwan.
| | - Ting-Yu Liu
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City, 24301, Taiwan.
| | - Tzu-Yi Chan
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City, 24301, Taiwan.
| | - Hui-Ming Tsou
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City, 24301, Taiwan.
| | - Chih-Yu Kuo
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan.
| | - Juen-Kai Wang
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 10617, Taiwan.
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, 10617, Taiwan.
| | - Yuh-Lin Wang
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, 10617, Taiwan.
- Department of Physics, National Taiwan University, Taipei, 10617, Taiwan.
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24
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Lin M, Wang Y, Sun X, Wang W, Chen L. "Elastic" property of mesoporous silica shell: for dynamic surface enhanced Raman scattering ability monitoring of growing noble metal nanostructures via a simplified spatially confined growth method. ACS APPLIED MATERIALS & INTERFACES 2015; 7:7516-25. [PMID: 25815901 DOI: 10.1021/acsami.5b01077] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The Raman enhancing ability of noble metal nanoparticles (NPs) is an important factor for surface enhanced Raman scattering (SERS) substrate screening, which is generally evaluated by simply mixing as-prepared NPs with Raman reporters for Raman signal measurements. This method usually leads to incredible results because of the NP surface coverage nonuniformity and reporter-induced NP aggregation. Moreover, it cannot realize in situ, continuous SERS characterization. Herein, we proposed a dynamic SERS monitoring strategy for NPs with precisely tuned structures based on a simplified spatially confined NP growth method. Gold nanorod (AuNR) seed NPs were coated with a mesoporous silica (mSiO2) shell. The permeability of mSiO2 for both reactive species and Raman reporters rendered the silver overcoating reaction and SERS indication of NP growth. Additionally, the mSiO2 coating ensured monodisperse NP growth in a Raman reporter-rich reaction system. Moreover, "elastic" features of mSiO2 were observed for the first time, which is crucial for holding the growing NP without breakage. This feature makes the mSiO2 coating adhere to metal NPs throughout the growing process, providing a stable Raman reporter distribution microenvironment near the NPs and ensuring that the substrate's SERS ability comparison is accurate. Three types of NPs, i.e., core-shell Au@AgNR@mSiO2, Au@AuNR@mSiO2, and yolk-shell Au@void@AuNR@mSiO2 NPs, were synthesized via core-shell overgrowth and galvanic replacement methods, showing the versatility of the approach. The living cell SERS labeling ability of Au@AgNR@mSiO2-based tags was also demonstrated. This strategy addresses the problems of multiple batch NP preparation, aggregation, and surface adsorption differentiation, which is a breakthrough for the dynamic comparison of SERS ability of metal NPs with precisely tuned structures and optical properties.
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Affiliation(s)
- Min Lin
- †School of Pharmacy, Yantai University, Yantai, Shandong 264005, China
- §Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, China
| | - Yunqing Wang
- §Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, China
| | - Xiuyan Sun
- †School of Pharmacy, Yantai University, Yantai, Shandong 264005, China
| | - Wenhai Wang
- §Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, China
| | - Lingxin Chen
- §Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, China
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