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Kim JM, Kim J, Choi K, Nam JM. Plasmonic Dual-Gap Nanodumbbells for Label-Free On-Particle Raman DNA Assays. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2208250. [PMID: 36680474 DOI: 10.1002/adma.202208250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Metal nanostructures with a tunable plasmonic gap are useful for photonics, surface-enhanced spectroscopy, biosensing, and bioimaging applications. The use of these structures as chemical and biological sensing/imaging probes typically requires an ultra-precise synthesis of the targeted nanostructure in a high yield, with Raman dye-labeling and complex assay components and procedures. Here, a plasmonic nanostructure with tunable dual nanogaps, Au dual-gap nanodumbbells (AuDGNs), is designed and synthesized via the anisotropic adsorption of polyethyleneimine on Au nanorods to facilitate tip-selective Au growths on nanorod tips for forming mushroom-shaped dumbbell-head structures at both tips and results in dual gaps (intra-head and inter-head gaps) within a single particle. AuDGNs are synthesized in a high yield (>90%) while controlling the inter-head gap size, and the average surface-enhanced Raman scattering (SERS) enhancement factor (EF) value is 7.5 × 108 with a very narrow EF distribution from 1.5 × 108 to 1.5 × 109 for >90% of analyzed particles. Importantly, AuDGNs enable label-free on-particle SERS detection assays through the diffusion of target molecules into the intraparticle gap for different DNA sequences with varying ATGC combinations in a highly specific and sensitive manner without a need for Raman dyes.
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Affiliation(s)
- Jae-Myoung Kim
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
| | - Jiyeon Kim
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
| | - Kyungin Choi
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
| | - Jwa-Min Nam
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
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2
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Kitaw SL, Birhan YS, Tsai HC. Plasmonic surface-enhanced Raman scattering nano-substrates for detection of anionic environmental contaminants: Current progress and future perspectives. ENVIRONMENTAL RESEARCH 2023; 221:115247. [PMID: 36640935 DOI: 10.1016/j.envres.2023.115247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/26/2022] [Accepted: 01/06/2023] [Indexed: 06/17/2023]
Abstract
Surface-enhanced Raman scattering spectroscopy (SERS) is a powerful technique of vibrational spectroscopy based on the inelastic scattering of incident photons by molecular species. It has unique properties such as ultra-sensitivity, selectivity, non-destructivity, speed, and fingerprinting properties for analytical and sensing applications. This enables SERS to be widely used in real-world sample analysis and basic plasmonic mechanistic studies. However, the desirable properties of SERS are compromised by the high cost and low reproducibility of the signals. The development of multifunctional, stable and reusable nano-engineered SERS substrates is a viable solution to circumvent these drawbacks. Recently, plasmonic SERS active nano-substrates with various morphologies have attracted the attention of researchers due to promising properties such as the formation of dense hot spots, additional stability, tunable and controlled morphology, and surface functionalization. This comprehensive review focused on the current advances in the field of SERS active nanosubstrates suitable for the detection and quantification of anionic environmental pollutants. The common fabrication methods, including the techniques for morphological adjustments and surface modification, substrate categories, and the design of nanotechnologically fabricated plasmonic SERS substrates for anion detection are systematically presented. Here, the need for the design, synthesis, and functionalization of SERS nano-substrates for anions of great environmental importance is explained in detail. In addition, the broad categories of SERS nano-substrates, namely colloid-based SERS substrates and solid-support SERS substrates are discussed. Moreover, a brief discussion of SERS detection of certain anionic pollutants in the environment is presented. Finally, the prospects in the fabrication and commercialization of pilot-scale handheld SERS sensors and the construction of smart nanosubstrates integrated with novel amplifying materials for the detection of anions of environmental and health concern are proposed.
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Affiliation(s)
- Sintayehu Leshe Kitaw
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei, 106, Taiwan, ROC
| | - Yihenew Simegniew Birhan
- Department of Chemistry, College of Natural and Computational Sciences, Debre Markos University, P.O. Box 269, Debre Markos, Ethiopia
| | - Hsieh-Chih Tsai
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei, 106, Taiwan, ROC; Advanced Membrane Materials Center, National Taiwan University of Science and Technology, Taipei, 106, Taiwan, ROC; R&D Center for Membrane Technology, Chung Yuan Christian University, Chungli, Taoyuan, 320, Taiwan, ROC.
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3
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Li J, Xu Y, Tian L, Yan Y, Niu L, Li X, Zhang Z. Silver Nanoparticle-Decorated Silica Nanospheres and Arrays as Potential Substrates for Surface-Enhanced Raman Scattering. ACS OMEGA 2021; 6:32879-32887. [PMID: 34901638 PMCID: PMC8655890 DOI: 10.1021/acsomega.1c04874] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 11/18/2021] [Indexed: 05/10/2023]
Abstract
Poly(vinylpyrrolidone) (PVP) was used as both a modifier and reductant to in situ deposit silver nanoparticles (denoted Ag NPs) on the surface of silica nanospheres (nanosilica or nano-SiO2), affording Ag-decorated nanosilica (denoted SiO2@Ag). The as-obtained SiO2@Ag composite can form silver nanoparticle-decorated silica nanosphere arrays (denoted SiO2@Ag arrays) via evaporation-induced self-assembly. The as-prepared SiO2@Ag composite and SiO2@Ag array were used as the SERS substrates to measure the Raman signals of the dilute solutions of rhodamine 6G (denoted R6G), an organic dye that is a potential pollutant to the environment. The findings indicate that the as-prepared SiO2@Ag composite and SiO2@Ag array as potential SERS substrates simultaneously exhibit a high degree of metal coverage and small size of Ag NPs as well as good stability and abundant "hot spots", which contributes to their desired Raman enhancement capacities. For the detection of trace R6G, they provide a limit of detection of as low as 10-9-10-11 M as well as good reproducibility, showing promising potential for monitoring chemical and biological molecules.
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Affiliation(s)
- Junfang Li
- Engineering
Research Center for Nanomaterials, Henan
University, Kaifeng 475004, P. R. China
| | - Yanfang Xu
- Engineering
Research Center for Nanomaterials, Henan
University, Kaifeng 475004, P. R. China
| | - Lulu Tian
- Engineering
Research Center for Nanomaterials, Henan
University, Kaifeng 475004, P. R. China
| | - Yibo Yan
- Engineering
Research Center for Nanomaterials, Henan
University, Kaifeng 475004, P. R. China
| | - Liyong Niu
- Engineering
Research Center for Nanomaterials, Henan
University, Kaifeng 475004, P. R. China
- Engineering
Research Center for Nanomaterials Co. Ltd., Henan University, Jiyuan 459000, P. R. China
| | - Xiaohong Li
- Engineering
Research Center for Nanomaterials, Henan
University, Kaifeng 475004, P. R. China
- Engineering
Research Center for Nanomaterials Co. Ltd., Henan University, Jiyuan 459000, P. R. China
| | - Zhijun Zhang
- Engineering
Research Center for Nanomaterials, Henan
University, Kaifeng 475004, P. R. China
- Engineering
Research Center for Nanomaterials Co. Ltd., Henan University, Jiyuan 459000, P. R. China
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4
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Xin X, Li Y, Yu L, Li W, Li J, Lu R. Facile synthesis of Ag@C@Ag hybrid nanoparticles as SERS substrate. Anal Bioanal Chem 2021; 413:5767-5777. [PMID: 34331088 DOI: 10.1007/s00216-021-03551-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 07/11/2021] [Accepted: 07/13/2021] [Indexed: 11/24/2022]
Abstract
Ag@C core-shell nanoparticles (NPs) were first prepared by a low-temperature heating-stirring method and subsequently modified with polyethyleneimine (PEI) at different concentrations. Finally, Ag@C@Ag hybrid NPs were prepared by a simple self-assembly procedure, and 24-nm Ag NPs were attached onto the surface of the initially fabricated PEI-modified Ag@C NPs via interaction between the NH2 groups of PEI and Ag. The results demonstrated that rhodamine 6G (R6G) could be detected at a concentration as low as 10-10 M using the Ag@C@Ag NPs as a substrate. To further understand the signal enhancement mechanism, finite-difference time-domain (FDTD) simulations were performed to calculate the electromagnetic field distributions and illustrate the generated Raman hot spots. The FDTD indicated that this enhancement was attributed to the surface plasmon resonance effects of the core Ag NPs in the Ag@C NPs, hot spots between the Ag@C NPs, and external assembly of the 24-nm Ag NPs, as well as between the massive outlayer 24-nm Ag NPs themselves. These fabricated materials were further applied for the detection of folic acid as an actual sample. The outstanding performance of the Ag@C@Ag NPs can be attributed to both the excellent properties of this hybrid substrate and the absorption capability of the carbon layer. Thus, this Ag@C@Ag NP material demonstrates excellent and stable optical properties, and can be used as a surface-enhanced Raman scattering (SERS) substrate in the field of ultrasensitive spectral analysis. Graphical abstract Ag@C@Ag hybrid nanoparticles are prepared by a simple self-assembly method. Then the synthesized Ag@C@Ag hybrid nanoparticles are used as SERS substrate for folic acid detection. To further understand the signal enhancement mechanism, finite-difference time-domain simulations are performed to calculate the electromagnetic field distributions and illustrate the generated SERS hot spots.
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Affiliation(s)
- Xiaoli Xin
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, People's Republic of China
| | - Yi Li
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, People's Republic of China
| | - Lu Yu
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, People's Republic of China
| | - Weihua Li
- School of Environment and Energy Engineering, Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse, Anhui Jianzhu University, Hefei, People's Republic of China
| | - Jiansheng Li
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, People's Republic of China
| | - Rui Lu
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, People's Republic of China.
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5
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Wang S, Shen W, Zheng S, Li Z, Wang C, Zhang L, Liu Y. Dual-signal lateral flow assay using vancomycin-modified nanotags for rapid and sensitive detection of Staphylococcus aureus. RSC Adv 2021; 11:13297-13303. [PMID: 35423879 PMCID: PMC8697553 DOI: 10.1039/d1ra01085a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 03/28/2021] [Indexed: 12/17/2022] Open
Abstract
This paper reports a colorimetric-fluorescent dual-signal lateral flow assay (LFA) based on vancomycin (Van)-modified SiO2-Au-QD tags for sensitive and quantitative detection of Staphylococcus aureus (S. aureus). The combination of high-performance Van-tags and detection antibodies integrated into the LFA system produced assays with high sensitivity and specificity. The visualization limit of the colorimetric signal and the detection limit of the fluorescence signal of the proposed method for S. aureus can reach 104 and 100 cells mL-1, respectively.
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Affiliation(s)
- Shu Wang
- Hefei Institute of Physical Science, Chinese Academy of Sciences Hefei 230036 PR China
- University of Science and Technology of China Hefei 230036 PR China
| | - Wanzhu Shen
- Anhui Agricultural University Hefei 230036 PR China
- Beijing Institute of Radiation Medicine Beijing 100850 PR China
| | - Shuai Zheng
- Anhui Agricultural University Hefei 230036 PR China
- Beijing Institute of Radiation Medicine Beijing 100850 PR China
| | - Zhigang Li
- Hefei Institute of Physical Science, Chinese Academy of Sciences Hefei 230036 PR China
| | - Chongwen Wang
- Anhui Agricultural University Hefei 230036 PR China
- Beijing Institute of Radiation Medicine Beijing 100850 PR China
| | - Long Zhang
- Hefei Institute of Physical Science, Chinese Academy of Sciences Hefei 230036 PR China
- University of Science and Technology of China Hefei 230036 PR China
| | - Yong Liu
- Hefei Institute of Physical Science, Chinese Academy of Sciences Hefei 230036 PR China
- University of Science and Technology of China Hefei 230036 PR China
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6
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Liu H, Dai E, Xiao R, Zhou Z, Zhang M, Bai Z, Shao Y, Qi K, Tu J, Wang C, Wang S. Development of a SERS-based lateral flow immunoassay for rapid and ultra-sensitive detection of anti-SARS-CoV-2 IgM/IgG in clinical samples. SENSORS AND ACTUATORS. B, CHEMICAL 2021; 329:129196. [PMID: 33230369 PMCID: PMC7673228 DOI: 10.1016/j.snb.2020.129196] [Citation(s) in RCA: 160] [Impact Index Per Article: 53.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 11/04/2020] [Accepted: 11/07/2020] [Indexed: 05/05/2023]
Abstract
The accurate and rapid screening of serum antibodies against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the key to control the spread of 2019 coronavirus disease (COVID-19). In this study, we reported a surface-enhanced Raman scattering-based lateral flow immunoassay (SERS-LFIA) for the simultaneous detection of anti-SARS-CoV-2 IgM/IgG with high sensitivity. Novel SERS tags labeled with dual layers of Raman dye were fabricated by coating a complete Ag shell on SiO2 core (SiO2@Ag) and exhibited excellent SERS signals, good monodispersity, and high stability. Anti-human IgM and IgG were immobilized onto the two test lines of the strip to capture the formed SiO2@Ag-spike (S) protein-anti-SARS-CoV-2 IgM/IgG immunocomplexes. The SERS signal intensities of the IgM and IgG test zones were easily recorded by a portable Raman instrument and used for the high-sensitivity analysis of target IgM and IgG. The limit of detection of SERS-LFIA was 800 times higher than that of standard Au nanoparticle-based LFIA for target IgM and IgG. The SERS-LFIA biosensor was tested on 19 positive serum samples from COVID-19 patients and 49 negative serum samples from healthy people to demonstrate the clinical feasibility of our proposed assay. The results revealed that the proposed method exhibited high accuracy and specificity for patients with SARS-CoV-2 infection.
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Affiliation(s)
- Haifeng Liu
- Anhui Agricultural University, Hefei 230036, PR China
- Beijing Institute of Radiation Medicine, Beijing 100850, PR China
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, Hefei 230036, PR China
| | - Erhei Dai
- Division of Liver Diseases, The Fifth Hospital of Shijiazhuang, Hebei Medical University, Shijiazhuang 050021, PR China
| | - Rui Xiao
- Beijing Institute of Radiation Medicine, Beijing 100850, PR China
| | - Zihui Zhou
- Anhui Agricultural University, Hefei 230036, PR China
- Beijing Institute of Radiation Medicine, Beijing 100850, PR China
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, Hefei 230036, PR China
| | - Minli Zhang
- Beijing Institute of Radiation Medicine, Beijing 100850, PR China
| | - Zikun Bai
- Beijing Institute of Radiation Medicine, Beijing 100850, PR China
| | - Ying Shao
- Anhui Agricultural University, Hefei 230036, PR China
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, Hefei 230036, PR China
| | - Kezong Qi
- Anhui Agricultural University, Hefei 230036, PR China
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, Hefei 230036, PR China
| | - Jian Tu
- Anhui Agricultural University, Hefei 230036, PR China
- Anhui Province Key Laboratory of Veterinary Pathobiology and Disease Control, Hefei 230036, PR China
| | - Chongwen Wang
- Anhui Agricultural University, Hefei 230036, PR China
- Beijing Institute of Radiation Medicine, Beijing 100850, PR China
| | - Shengqi Wang
- Beijing Institute of Radiation Medicine, Beijing 100850, PR China
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7
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Shi L, Xu L, Xiao R, Zhou Z, Wang C, Wang S, Gu B. Rapid, Quantitative, High-Sensitive Detection of Escherichia coli O157:H7 by Gold-Shell Silica-Core Nanospheres-Based Surface-Enhanced Raman Scattering Lateral Flow Immunoassay. Front Microbiol 2020; 11:596005. [PMID: 33240250 PMCID: PMC7677456 DOI: 10.3389/fmicb.2020.596005] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 10/15/2020] [Indexed: 11/13/2022] Open
Abstract
Escherichia coli O157:H7 is regarded as one of the most harmful pathogenic microorganisms related to foodborne diseases. This paper proposes a rapid-detection biosensor for the sensitive and quantitative analysis of E. coli O157:H7 in biological samples by surface-enhanced Raman scattering (SERS)-based lateral flow immunoassay (LFIA). A novel gold-shell silica-core (SiO2/Au) nanosphere (NP) with monodispersity, good stability, and excellent SERS activity was utilized to prepare high-performance tags for the SERS-based LFIA system. The SiO2/Au SERS tags, which were modified with two layers of Raman reporter molecules and monoclonal antibodies, effectively bind with E. coli O157:H7 and form sandwich immune complexes on the test lines. E. coli O157:H7 was quantitatively detected easily by detecting the Raman intensity of the test lines. Under optimal conditions, the limit of detection (LOD) of the SiO2/Au-based SERS-LIFA strips for the target bacteria was 50 cells/mL in PBS solution, indicating these strips are 2,000 times more sensitive than colloidal Au-based LFIA strips. Moreover, the proposed assay demonstrated high applicability in E. coli O157:H7 detection in biological samples, including tap water, milk, human urine, lettuce extract and beef, with a low LOD of 100 cells/mL. Results indicate that the proposed SERS-based LFIA strip is applicable for the sensitive and quantitative determination of E. coli O157:H7.
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Affiliation(s)
- Luoluo Shi
- Medical Technology Institute of Xuzhou Medical University, Xuzhou, China
- Beijing Institute of Radiation Medicine, Beijing, China
- Department of Laboratory Medicine, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Ling Xu
- Medical Technology Institute of Xuzhou Medical University, Xuzhou, China
- Department of Laboratory Medicine, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Rui Xiao
- Beijing Institute of Radiation Medicine, Beijing, China
| | - Zihui Zhou
- College of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Chongwen Wang
- Medical Technology Institute of Xuzhou Medical University, Xuzhou, China
- Beijing Institute of Radiation Medicine, Beijing, China
- College of Life Sciences, Anhui Agricultural University, Hefei, China
| | - Shengqi Wang
- Beijing Institute of Radiation Medicine, Beijing, China
| | - Bing Gu
- Medical Technology Institute of Xuzhou Medical University, Xuzhou, China
- Department of Laboratory Medicine, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
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Maw SS, Watanabe S, Miyahara MT. Multiple Roles of Polyethylenimine during Synthesis of 10 nm Thick Continuous Silver Nanoshells. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:4511-4518. [PMID: 32239957 DOI: 10.1021/acs.langmuir.9b03096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Silica@silver core-shell particles (silver nanoshells) present a wide range of applications, owing to their unique optical, chemical, and surface plasmon resonance (SPR) properties. Because SPR properties are mainly determined by shell thickness, precise shell thickness control is required. However, the synthesis of continuous nanoshells less than 10 nm thickness is still a challenge. In this study, we overcame this challenge by using polyethyleneimine (PEI) during the shell growth step of the seed-mediated growth method. We determined that the addition of PEI significantly slowed the shell growth reaction and facilitated the formation of uniform shells, which allowed us to synthesize 9.8 nm thick complete silver nanoshells. The SPR absorptions of the resultant nanoshell suspensions remained almost unchanged for 15 days. Therefore, we demonstrated that PEI molecules played three different roles during the shell growth process: reaction-rate regulators, shell growth facilitators, and resultant suspension stabilizers. The shell thickness was tuned from 9.8 to 29.5 nm by simply varying the silver-ion concentration. A key factor was the amount of added PEI because excess PEI would result in the formation of silver nanoparticles in the bulk solution phase, while too little PEI would produce incomplete shells. The optimum mass ratio of PEI-to-silica particles was determined to be 1.0 for the experimental conditions in this study. The mixing sequence of the reaction solutions was also important because PEI had to be mixed with silica particles first to ensure that the PEI molecules get adsorbed on the surface of silica and accommodated silver ions via the coordination interactions between the amine groups of the PEI molecules and silver ions. The reaction that involves the use of PEI could lead to establishing a simple and robust synthesis technique for silver nanoshells.
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Affiliation(s)
- San San Maw
- Department of Chemical Engineering, Kyoto University, Katsura, Nishikyo, Kyoto 615-8510, Japan
| | - Satoshi Watanabe
- Department of Chemical Engineering, Kyoto University, Katsura, Nishikyo, Kyoto 615-8510, Japan
| | - Minoru T Miyahara
- Department of Chemical Engineering, Kyoto University, Katsura, Nishikyo, Kyoto 615-8510, Japan
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9
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Zhang B, Yang X, Liu X, Li J, Wang C, Wang S. Polyethyleneimine-interlayered silica-core quantum dot-shell nanocomposites for sensitive detection of Salmonella typhimurium via a lateral flow immunoassay. RSC Adv 2020; 10:2483-2489. [PMID: 35496136 PMCID: PMC9048750 DOI: 10.1039/c9ra09252h] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 01/04/2020] [Indexed: 12/13/2022] Open
Abstract
Herein, we synthesized high-performance SiO2–core quantum dot (QD)–shell nanocomposites (SiO2@PEI-QDs) using the polyethyleneimine (PEI)-mediated adsorption method. Cationic PEI was used to form a positively charged interlayer on the SiO2 core, which achieved a dense adsorption of carboxylated QDs to form a shell of QDs and maintained a good dispersibility of the nanocomposite. The SiO2@PEI-QDs showed excellent stability and high luminescence, and served as high-performance fluorescent labels for the detection of bacteria when used with the lateral flow immunoassay (LFA) technique. An SiO2@PEI-QD-based LFA strip was successfully applied to rapidly detect Salmonella typhimurium in milk samples with a low limit of 5 × 102 cells per mL. A novel type of SiO2-core QDs-shell nanomaterial was fabricated and utilized to prepare bright fluorescent nanotags for fluorescent lateral flow strip.![]()
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Affiliation(s)
- Bo Zhang
- School of Public Health
- Jilin University
- Changchun 130021
- PR China
- Department of Pharmacy
| | - Xingsheng Yang
- College of Life Sciences
- Anhui Agricultural University
- Hefei 230036
- PR China
- Beijing Institute of Radiation Medicine
| | - Xiaoxian Liu
- College of Life Sciences
- Anhui Agricultural University
- Hefei 230036
- PR China
- Beijing Institute of Radiation Medicine
| | - Juan Li
- School of Public Health
- Jilin University
- Changchun 130021
- PR China
| | - Chongwen Wang
- College of Life Sciences
- Anhui Agricultural University
- Hefei 230036
- PR China
- Beijing Institute of Radiation Medicine
| | - Shengqi Wang
- College of Life Sciences
- Anhui Agricultural University
- Hefei 230036
- PR China
- Beijing Institute of Radiation Medicine
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10
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Li J, Wang C, Shi L, Shao L, Fu P, Wang K, Xiao R, Wang S, Gu B. Rapid identification and antibiotic susceptibility test of pathogens in blood based on magnetic separation and surface-enhanced Raman scattering. Mikrochim Acta 2019; 186:475. [PMID: 31250223 DOI: 10.1007/s00604-019-3571-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 06/02/2019] [Indexed: 12/22/2022]
Abstract
An effective surface-enhanced Raman scattering (SERS) method is presented for the rapid identification and drug sensitivity analysis of pathogens in blood. In a first step, polyethyleneimine-modified magnetic microspheres (Fe3O4@PEI) were used to enrich bacteria from blood samples. Next, the Fe3O4@PEI@bacteria complex was cultured on both ordinary and drug-sensitive plates. Lastly, the SERS spectra of single colonies were acquired in order to identify different pathogens and their resistant strains by comparison with established standardized bacterial SERS spectras and orthogonal partial least squares discriminant analysis (OPLS-DA) method. Staphylococcus aureus, Acinetobacter baumannii, Pseudomonas aeruginosa and their resistant strains were used to evaluate the performance of the SERS method. The results demonstrate that the method can accurately detect and identify all the tested sensitive and drug-resistant strains of bacteria, including 77 clinical blood infection samples. The method provides a way for rapid identification and susceptibility test of pathogens, and has great potential to replace currently used time-consuming methods. Graphical abstract Schematic presentation of a method for the rapid identification and drug sensitivity analysis of pathogens in blood. It is based on a combination of magnetic separation, SERS fingerprint analysis and orthogonal partial least squares discriminant analysis (OPLS-DA).
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Affiliation(s)
- Jia Li
- Medical Technology Institute of Xuzhou Medical University, Xuzhou, 221004, People's Republic of China.,Department of Laboratory Medicine, Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221004, People's Republic of China
| | - Chongwen Wang
- Beijing Institute of Radiation Medicine, Beijing, 100850, People's Republic of China. .,College of Life Sciences, Anhui Agricultural University, Hefei, 230036, People's Republic of China.
| | - Luoluo Shi
- Medical Technology Institute of Xuzhou Medical University, Xuzhou, 221004, People's Republic of China
| | - Liting Shao
- Beijing Institute of Radiation Medicine, Beijing, 100850, People's Republic of China
| | - Peiwen Fu
- Medical Technology Institute of Xuzhou Medical University, Xuzhou, 221004, People's Republic of China
| | - Keli Wang
- Beijing Institute of Radiation Medicine, Beijing, 100850, People's Republic of China
| | - Rui Xiao
- Beijing Institute of Radiation Medicine, Beijing, 100850, People's Republic of China.
| | - Shengqi Wang
- Medical Technology Institute of Xuzhou Medical University, Xuzhou, 221004, People's Republic of China. .,Beijing Institute of Radiation Medicine, Beijing, 100850, People's Republic of China.
| | - Bing Gu
- Medical Technology Institute of Xuzhou Medical University, Xuzhou, 221004, People's Republic of China. .,Department of Laboratory Medicine, Affiliated Hospital of Xuzhou Medical University, Xuzhou, 221004, People's Republic of China.
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11
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Ogundare SA, van Zyl WE. Amplification of SERS “hot spots” by silica clustering in a silver-nanoparticle/nanocrystalline-cellulose sensor applied in malachite green detection. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.03.019] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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12
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Rice D, Mouras R, Gleeson M, Liu N, Tofail SAM, Soulimane T, Silien C. APTES Duality and Nanopore Seed Regulation in Homogeneous and Nanoscale-Controlled Reduction of Ag Shell on SiO 2 Microparticle for Quantifiable Single Particle SERS. ACS OMEGA 2018; 3:13028-13035. [PMID: 31458023 PMCID: PMC6644844 DOI: 10.1021/acsomega.8b01247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 08/28/2018] [Indexed: 05/10/2023]
Abstract
Noble-metal nanoparticles size and packing density are critical for sensitive surface-enhanced Raman scattering (SERS) and controlled preparation of such films required to achieve reproducibility. Provided that they are made reliable, Ag shell on SiO2 microscopic particles (Ag/SiO2) are promising candidates for lab-on-a-bead analytical measurements of low analyte concentration in liquid specimen. Here, we selected nanoporous silica microparticles as a substrate for reduction of AgNO3 with 3-aminopropyltriethoxysilane (APTES). In a single preparation step, homogeneous and continuous films of Ag nanoparticles are formed on SiO2 surfaces with equimolar concentration of APTES and silver nitrate in ethanol. It is discussed that amine and silane moieties in APTES contribute first to an efficient reduction on the silica and second to capping the Ag nanoparticles. The high density and homogeneity of nanoparticle nucleation is further regulated by the nanoporosity of the silica. The Ag/SiO2 microparticles were tested for SERS using self-assembled 4-aminothiophenol monolayers, and an enhancement factor of ca. 2 × 106 is measured. Importantly, the SERS relative standard deviation is 36% when a single microparticle is considered and drops to 11% when sets of 10 microparticles are considered. As prepared, the microparticles are highly suitable for state-of-the-art quantitative lab-on-a-bead interrogation of specimens.
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Affiliation(s)
- Daragh Rice
- Department
of Physics & Bernal Institute and Department of Chemical Sciences
& Bernal Institute, University of Limerick, V94 T9PX Limerick, Ireland
| | - Rabah Mouras
- Department
of Physics & Bernal Institute and Department of Chemical Sciences
& Bernal Institute, University of Limerick, V94 T9PX Limerick, Ireland
| | - Matthew Gleeson
- Department
of Physics & Bernal Institute and Department of Chemical Sciences
& Bernal Institute, University of Limerick, V94 T9PX Limerick, Ireland
| | - Ning Liu
- Department
of Physics & Bernal Institute and Department of Chemical Sciences
& Bernal Institute, University of Limerick, V94 T9PX Limerick, Ireland
| | - Syed A. M. Tofail
- Department
of Physics & Bernal Institute and Department of Chemical Sciences
& Bernal Institute, University of Limerick, V94 T9PX Limerick, Ireland
| | - Tewfik Soulimane
- Department
of Physics & Bernal Institute and Department of Chemical Sciences
& Bernal Institute, University of Limerick, V94 T9PX Limerick, Ireland
| | - Christophe Silien
- Department
of Physics & Bernal Institute and Department of Chemical Sciences
& Bernal Institute, University of Limerick, V94 T9PX Limerick, Ireland
- E-mail:
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13
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Gellini C, Muniz-Miranda F, Pedone A, Muniz-Miranda M. SERS active Ag-SiO 2 nanoparticles obtained by laser ablation of silver in colloidal silica. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2018; 9:2396-2404. [PMID: 30254834 PMCID: PMC6142779 DOI: 10.3762/bjnano.9.224] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 08/21/2018] [Indexed: 06/08/2023]
Abstract
Highly stable Ag-SiO2 nanoparticle composites were first obtained by laser ablation of a silver target in an aqueous colloidal dispersion of silica and examined by UV-vis absorption spectroscopy, transmission electron microscopy and Raman spectroscopy. The surface enhanced Raman scattering (SERS) activity of these nanocomposites was tested using 2,2'-bipyridine as a molecular reporter and excitation in the visible and near-IR spectral regions. The computational DFT approach provided evidence of ligand adsorption on positively charged adatoms of the silver nanostructured surface, in a very similar way to the metal/molecule interaction occurring in the corresponding Ag(I) coordination compound.
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Affiliation(s)
- Cristina Gellini
- Department of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
| | - Francesco Muniz-Miranda
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
- Center for Molecular Modeling, Ghent University, Technologiepark 903, 9052 Zwijnaarde, Belgium
| | - Alfonso Pedone
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Maurizio Muniz-Miranda
- Department of Chemistry “Ugo Schiff”, University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy
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14
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Tong Q, Wang W, Fan Y, Dong L. Recent progressive preparations and applications of silver-based SERS substrates. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.06.018] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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15
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Jia X, Wang C, Rong Z, Li J, Wang K, Qie Z, Xiao R, Wang S. Dual dye-loaded Au@Ag coupled to a lateral flow immunoassay for the accurate and sensitive detection of Mycoplasma pneumoniae infection. RSC Adv 2018; 8:21243-21251. [PMID: 35539903 PMCID: PMC9080884 DOI: 10.1039/c8ra03323d] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 05/29/2018] [Indexed: 12/13/2022] Open
Abstract
We present an attractive model of surface-enhanced Raman scattering-based lateral flow immunoassay (SERS-LFIA) for the sensitive and accurate detection of Mycoplasma pneumoniae (MP) infection in human serum. The SERS-LFIA strip uses Au@Ag nanoparticles (Au@Ag NPs) loaded with two layers of Raman dye 5,5′-dithiobis-(2-nitrobenzoic acid) (DTNB) as SERS tags. The advantages of the dual dye-loaded SERS tags (Au/DTNB@Ag/DTNB) are the high sensitivity and the bioconjugation flexibility of the detection antibody. As determined from our SERS-LFIA strip, human IgM was quantified by monitoring the SERS signal on the test line. The limit of detection for human IgM was 0.1 ng mL−1, which was 100 times more sensitive than that by using the colorimetric method. Our assay results for 20 MP-specific IgM positive serum specimens showed 100% accuracy and detection rate, whereas the parallel enzyme-linked immunosorbent assay only showed 85% detection rate. The SERS-LFIA strip also exhibited high specificity and potential clinical applications. Therefore, our SERS-based LFIA strip has strong potential for practical applications in the sensitive and rapid detection of MP. Schematic illustration of quantitative detection of human IgM using SERS-based lateral flow immunoassay.![]()
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Affiliation(s)
- Xiaofei Jia
- College of Life Sciences & Bio-Engineering
- Beijing University of Technology
- Beijing 100124
- P. R. China
- Beijing Institute of Radiation Medicine
| | - Chongwen Wang
- College of Life Sciences & Bio-Engineering
- Beijing University of Technology
- Beijing 100124
- P. R. China
- Beijing Institute of Radiation Medicine
| | - Zhen Rong
- Beijing Institute of Radiation Medicine
- Beijing 100850
- P. R. China
| | - Jian Li
- Chinese PLA General Hospital
- Beijing 100853
- P. R. China
| | - Keli Wang
- Beijing Institute of Radiation Medicine
- Beijing 100850
- P. R. China
| | - Zhiwei Qie
- Beijing Institute of Radiation Medicine
- Beijing 100850
- P. R. China
| | - Rui Xiao
- Beijing Institute of Radiation Medicine
- Beijing 100850
- P. R. China
| | - Shengqi Wang
- College of Life Sciences & Bio-Engineering
- Beijing University of Technology
- Beijing 100124
- P. R. China
- Beijing Institute of Radiation Medicine
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16
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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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