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He B, Liu X, Chen L. Particle Attachment Growth of Au@Ag Core-Shell Nanocuboids. NANO LETTERS 2023; 23:3963-3970. [PMID: 37102992 DOI: 10.1021/acs.nanolett.3c00726] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
In the templated synthesis of colloidal core-shell nanoparticles, the monomer attachment growth mechanism has been widely accepted to describe the growth process of shells. In this work, by using advanced transmission electron microscope techniques, we directly observe two alternative particle attachment growth pathways that dominate the growth of Au@Ag core-shell nanocuboids. One pathway involves the in situ reduction of AgCl nanoparticles attached to Au nanorods and the subsequent epitaxial growth of the Ag shell. The other pathway involves the adherence of Ag-AgCl Janus nanoparticles to Au nanorods with random orientations, followed by nanoparticle redispersion and the resulting formation of epitaxial Ag shells on the Au nanorods. The particle-mediated growth of Ag shells is accompanied by the redispersion of surface atoms, tending to form a uniform structure. The validation of the particle attachment growth processes at the atomic scale provides a new mechanistic understanding of core-shell nanostructure synthesis.
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Affiliation(s)
- Bowen He
- School of Chemistry and Chemical Engineering, in situ Center for Physical Sciences, Shanghai Electrochemical Energy Device Research Center (SEED), and Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xi Liu
- School of Chemistry and Chemical Engineering, in situ Center for Physical Sciences, Shanghai Electrochemical Energy Device Research Center (SEED), and Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Liwei Chen
- School of Chemistry and Chemical Engineering, in situ Center for Physical Sciences, Shanghai Electrochemical Energy Device Research Center (SEED), and Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 200240, China
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2
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Khan MU, Ullah H, Honey S, Gul Z, Ullah S, Ullah B, Manan A, Ullah M, Ali S. Electrochemical Deposition of Au/Ag Nanostructure for the Catalytic Reduction of p-Nitrophenol. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024422110206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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3
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Bi C, Song Y, Zhao H, Liu G. Shape controlled synthesis of concave octahedral Au@AuAg nanoparticles to improve their surface-enhanced Raman scattering performance. RSC Adv 2022; 12:19571-19578. [PMID: 35865565 PMCID: PMC9258681 DOI: 10.1039/d2ra02651a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 06/30/2022] [Indexed: 11/21/2022] Open
Abstract
In this work, a seed mediated strategy has been proposed to design and fabricate uniform octahedral shaped gold@gold-silver nanoparticles (Au@AuAg NPs) with unique concave structure and an AuAg alloy shell. The morphology and Au/Ag ratio of the Au@AuAg nanostructures can be delicately controlled by varying the concentration of reagents, namely the Au nanorod (NR) seeds, HAuCl4 and AgNO3 precursor. Besides, the investigation of the growth mechanism revealed that the morphology of the product also can be controlled by tuning the growth time. Furthermore, uniformly arranged assemblies of concave octahedral Au@AuAg NPs were prepared through a solvent evaporation self-assembly strategy and employed as surface-enhanced Raman scattering (SERS) substrates, effectively applied to the analysis of R6G for the examination of SERS performance. Satisfyingly, owing to the synergistic effect between the Au and Ag elements and concave structure, concave octahedral Au@AuAg NPs exhibit significantly higher SERS enhancement compared with traditional octahedral Au NPs, which have an enhancement factor of ∼1.3 × 107 and a detection limit as low as 10−10 M. Meanwhile, the SERS substrate reveals an excellent uniformity and reproducibility of the SERS performance. This work opens a new avenue toward bimetallic NPs with concave structure, which have broad application prospects in optics, SERS detection and other fields. In this work, a seed mediated strategy has been proposed to design and fabricate uniform octahedral shaped gold@gold-silver nanoparticles (Au@AuAg NPs) with unique concave structure and an AuAg alloy shell.![]()
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Affiliation(s)
- Cuixia Bi
- School of Physics and Physical Engineering, Qufu Normal University Qufu 273165 P. R. China
| | - Yahui Song
- Academy of Advanced Interdisciplinary Studies, Qilu University of Technology Jinan 250000 P. R. China
| | - Hongyan Zhao
- School of Physics and Physical Engineering, Qufu Normal University Qufu 273165 P. R. China
| | - Guangqiang Liu
- School of Physics and Physical Engineering, Qufu Normal University Qufu 273165 P. R. China
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Plasmonic Spherical Nanoparticles Coupled with Titania Nanotube Arrays Prepared by Anodization as Substrates for Surface-Enhanced Raman Spectroscopy Applications: A Review. Molecules 2021; 26:molecules26247443. [PMID: 34946522 PMCID: PMC8705377 DOI: 10.3390/molecules26247443] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/02/2021] [Accepted: 12/03/2021] [Indexed: 12/17/2022] Open
Abstract
As surface-enhanced Raman spectroscopy (SERS) continues developing to be a powerful analytical tool for several probes, four important aspects to make it more accessible have to be addressed: low-cost, reproducibility, high sensibility, and recyclability. Titanium dioxide nanotubes (TiO2 NTs) prepared by anodization have attracted interest in this field because they can be used as safe solid supports to deposit metal nanoparticles to build SERS substrate nanoplatforms that meet these four desired aspects. TiO2 NTs can be easily prepared and, by varying different synthesis parameters, their dimensions and specific features of their morphology can be tuned allowing them to support metal nanoparticles of different sizes that can achieve a regular dispersion on their surface promoting high enhancement factors (EF) and reproducibility. Besides, the TiO2 photocatalytic properties enable the substrate's self-cleaning property for recyclability. In this review, we discuss the different methodological strategies that have been tested to achieve a high performance of the SERS substrates based on TiO2 NTs as solid support for the three main noble metal nanoparticles mainly studied for this purpose: Ag, Au, and Pt.
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M. Abdul Hakkeem H, Babu A, Kumar Pal S, Peer Mohamed A, Kumar Ghosh S, Pillai S. Cellulose nanocrystals directed in-situ assembly of Au@Ag nanostructures with multifunctional activities. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Tai YH, Lo SC, Montagne K, Tsai PC, Liao CC, Wang SH, Chin IS, Xing D, Ho YL, Huang NT, Wei PK, Delaunay JJ. Enhancing Raman signals from bacteria using dielectrophoretic force between conductive lensed fiber and black silicon. Biosens Bioelectron 2021; 191:113463. [PMID: 34198171 DOI: 10.1016/j.bios.2021.113463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 06/02/2021] [Accepted: 06/22/2021] [Indexed: 12/26/2022]
Abstract
An osmium-coated lensed fiber (OLF) probe combined with a silver-coated black silicon (SBS) substrate was used to generate a dielectrophoretic (DEP) force that traps bacteria and enables Raman signal detection from bacteria. The lensed fiber coated with a 2-nm osmium layer was used as an electrode for the DEP force and also as a lens to excite Raman signals. The black silicon coated with a 150-nm silver layer was used both as the surface-enhanced Raman scattering (SERS) substrate and the counter electrode. The enhanced Raman signal was collected by the same OLF probe and further analyzed with a spectrometer. For Raman measurements, a drop of bacterial suspension was placed between the OLF probe and the SBS substrate. By controlling the frequency of an AC voltage on the OLF probe and SBS substrate, a DEP force at 1 MHz concentrated bacteria on the SBS surface and removed the unbound micro-objects in the solution at 1 kHz. A bacteria concentration of 6 × 104 CFU/mL (colony forming units per mL) could be identified in less than 15 min, using a volume of only 1 μL, by recording the variation of the Raman peak at 740 cm-1.
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Affiliation(s)
- Yi-Hsin Tai
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Shu-Cheng Lo
- Institute of Applied Mechanics, National Taiwan University, Taipei, 10617, Taiwan
| | - Kevin Montagne
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Po-Cheng Tsai
- Graduate Institute of Electronics Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Cheng-Chieh Liao
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, 10617, Taiwan
| | - Sheng-Hann Wang
- Research Center for Applied Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Iuan-Sheau Chin
- Research Center for Applied Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Di Xing
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Ya-Lun Ho
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Nien-Tsu Huang
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, 10617, Taiwan; Department of Electrical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Pei-Kuen Wei
- Research Center for Applied Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Jean-Jacques Delaunay
- Department of Mechanical Engineering, School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan.
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Lee S, Portalès H, Walls M, Beaunier P, Goubet N, Tremblay B, Margueritat J, Saviot L, Courty A. Versatile and robust synthesis process for the fine control of the chemical composition and core-crystallinity of spherical core-shell Au@Ag nanoparticles. NANOTECHNOLOGY 2021; 32:095604. [PMID: 33096540 DOI: 10.1088/1361-6528/abc450] [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
Au nanoparticles (NPs) characterized by distinct surface chemistry (including dodecanethiol or oleylamine as capping agent), different sizes (∼5 and ∼10 nm) and crystallinities (polycrystalline or single crystalline), were chosen as seeds to demonstrate the versatility and robustness of our two-step core-shell Au@Ag NP synthesis process. The central component of this strategy is to solubilize the shell precursor (AgNO3) in oleylamine and to induce the growth of the shell on selected seeds under heating. The shell thickness is thus controlled by the temperature, the annealing time, the (shell precursor)/(seed) concentration ratio, seed size and crystallinity. The shell thickness is thus shown to increase with the reactant concentration and to grow faster on polycrystalline seeds. The crystalline structure and chemical composition were characterized by HRTEM, STEM-HAADF, EELS and Raman spectroscopy. The plasmonic response of Au@Ag core-shell NPs as a function of core size and shell thickness was assessed by spectrophotometry and simulated by calculations based on the discrete dipole approximation (DDA) method. Finally, the nearly monodisperse core-shell Au@Ag NPs were shown to form micrometer-scale facetted 3D fcc-ordered superlattices (SLs) after solvent evaporation and deposition on a solid substrate. These SLs are promising candidates for applications as a tunable surface-enhanced Raman scattering platform.
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Affiliation(s)
- Suyeon Lee
- Sorbonne Université, MONARIS, CNRS-UMR 8233, 4 Place Jussieu, F-75005 Paris, France
| | - Hervé Portalès
- Sorbonne Université, MONARIS, CNRS-UMR 8233, 4 Place Jussieu, F-75005 Paris, France
| | - Michael Walls
- Laboratoire de Physique des Solides, Université Paris-Saclay, F-91405 Orsay, France
| | - Patricia Beaunier
- Sorbonne Université, Laboratoire de Réactivité de Surface, UMR 7197-CNRS, 4 Place Jussieu, F-75005 Paris Cedex 05, France
| | - Nicolas Goubet
- Sorbonne Université, MONARIS, CNRS-UMR 8233, 4 Place Jussieu, F-75005 Paris, France
| | - Benoit Tremblay
- Sorbonne Université, MONARIS, CNRS-UMR 8233, 4 Place Jussieu, F-75005 Paris, France
| | - Jérémie Margueritat
- Institut Lumière Matière, UMR 5306 CNRS-UCBL, 10 rue Ada Byron, F-69622 Villeurbanne Cedex, France
| | - Lucien Saviot
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS-Université Bourgogne Franche-Comté, 9 avenue Alain Savary, BP 47870, F-21078 Dijon Cedex, France
| | - Alexa Courty
- Sorbonne Université, MONARIS, CNRS-UMR 8233, 4 Place Jussieu, F-75005 Paris, France
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Er E, Sánchez-Iglesias A, Silvestri A, Arnaiz B, Liz-Marzán LM, Prato M, Criado A. Metal Nanoparticles/MoS 2 Surface-Enhanced Raman Scattering-Based Sandwich Immunoassay for α-Fetoprotein Detection. ACS APPLIED MATERIALS & INTERFACES 2021; 13:8823-8831. [PMID: 33583183 PMCID: PMC7908013 DOI: 10.1021/acsami.0c22203] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 01/19/2021] [Indexed: 05/14/2023]
Abstract
The detection of cancer biomarkers at an early stage of tumor development is vital for effective diagnosis and treatment of cancer. Current diagnostic tools can often detect cancer only when the biomarker levels are already too high, so that the tumors have spread and treatments are less effective. It is urgent therefore to develop highly sensitive assays for the detection of such biomarkers at the lowest possible concentration. In this context, we developed a sandwich immunoassay based on surface-enhanced Raman scattering (SERS) for the ultrasensitive detection of α-fetoprotein (AFP), which is typically present in human serum as a biomarker indicative of early stages of hepatocellular carcinoma. In the immunoassay design, molybdenum disulfide (MoS2) modified with a monoclonal antibody was used as a capture probe for AFP. A secondary antibody linked to an SERS-encoded nanoparticle was employed as the Raman signal reporter, that is, the transducer for AFP detection. The sandwich immunocomplex "capture probe/target/SERS tag" was deposited on a silicon wafer and decorated with silver-coated gold nanocubes to increase the density of "hot spots" on the surface of the immunosensor. The developed SERS immunosensor exhibits a wide linear detection range (1 pg mL-1 to 10 ng mL-1) with a limit of detection as low as 0.03 pg mL-1 toward AFP with good reproducibility (RSD < 6%) and stability. These parameters demonstrate that the proposed immunosensor has the potential to be used as an analytical platform for the detection of early-stage cancer biomarkers in clinical applications.
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Affiliation(s)
- Engin Er
- Center
for Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), 20014 Donostia-San
Sebastián, Spain
- Department
of Analytical Chemistry, Faculty of Pharmacy, Ankara University, 06560 Ankara, Turkey
| | - Ana Sánchez-Iglesias
- Center
for Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), 20014 Donostia-San
Sebastián, Spain
- Centro
de Investigación Biomédica en Red, Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 20014 Donostia-San
Sebastián, Spain
| | - Alessandro Silvestri
- Center
for Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), 20014 Donostia-San
Sebastián, Spain
| | - Blanca Arnaiz
- Center
for Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), 20014 Donostia-San
Sebastián, Spain
| | - Luis M. Liz-Marzán
- Center
for Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), 20014 Donostia-San
Sebastián, Spain
- Centro
de Investigación Biomédica en Red, Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 20014 Donostia-San
Sebastián, Spain
- Department
of Applied Chemistry, University of the
Basque Country, 20018 Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
| | - Maurizio Prato
- Center
for Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), 20014 Donostia-San
Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
- Department
of Chemical and Pharmaceutical Sciences, Universitá Degli Studi di Trieste, Via Licio Giorgieri 1, 34127 Trieste, Italy
| | - Alejandro Criado
- Center
for Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), 20014 Donostia-San
Sebastián, Spain
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10
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Kwon T, Jun M, Lee K. Catalytic Nanoframes and Beyond. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2001345. [PMID: 32633878 DOI: 10.1002/adma.202001345] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 04/01/2020] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
The ever-increasing need for the production and expenditure of sustainable energy is a result of the astonishing rate of consumption of fossil fuels and the accompanying environmental problems. Emphasis is being directed to the generation of sustainable energy by the fuel cell and water splitting technologies. Accordingly, the development of highly efficient electrocatalysts has attracted significant interest, as the fuel cell and water splitting technologies are critically dependent on their performance. Among numerous catalyst designs under investigation, nanoframe catalysts have an intrinsically large surface area per volume and a tunable composition, which impacts the number of catalytically active sites and their intrinsic catalytic activity, respectively. Nevertheless, the structural integrity of the nanoframe during electrochemical operation is an ongoing concern. Some significant advances in the field of nanoframe catalysts have been recently accomplished, specifically geared to resolving the catalytic stability concerns and significantly boosting the intrinsic catalytic activity of the active sites. Herein, general synthetic concepts of nanoframe structures and their structure-dependent catalytic performance are summarized, along with recent notable advances in this field. A discussion on the remaining challenges and future directions, addressing the limitations of nanoframe catalysts, are also provided.
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Affiliation(s)
- Taehyun Kwon
- Department of Chemistry and Research Institute for Natural Sciences, Korea University, Seoul, 02841, Republic of Korea
| | - Minki Jun
- Department of Chemistry and Research Institute for Natural Sciences, Korea University, Seoul, 02841, Republic of Korea
| | - Kwangyeol Lee
- Department of Chemistry and Research Institute for Natural Sciences, Korea University, Seoul, 02841, Republic of Korea
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Shen J, Zhang L, Liu L, Wang B, Bai J, Shen C, Chen Y, Fan Q, Chen S, Wu W, Feng X, Wang L, Huang W. Revealing Lectin-Sugar Interactions with a Single Au@Ag Nanocube. ACS APPLIED MATERIALS & INTERFACES 2019; 11:40944-40950. [PMID: 31597422 DOI: 10.1021/acsami.9b15349] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
An individual nanoparticle-based plasmonic nanotechnology was used for real-time monitoring of lectin-sugar interactions, which could be designed as novel plasmonic nanobiosensors for the detection of trace concanavalin A (ConA) with high sensitivity and selectivity. The localized surface plasmon resonance (LSPR) spectra of Au@Ag nanocubes (NCs) are linearly shifted to a long wavelength with an increasing concentration of ConA. In fact, each Au@Ag NC can act as a nanobiosensor for the quantified detection of trace ConA, which enables the miniaturization of the biosensor system to nanoscale. Furthermore, the results demonstrated the perfect biosensing ability with the dual channel of dark-field microscopy images and LSPR spectra. We expect that this nanobiosensor system can provide an alternative important method for monitoring the specific binding of lectin-sugar at a single nanoparticle surface.
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Affiliation(s)
- Jingjing Shen
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts & Telecommunications , 9 Wenyuan Road , Nanjing 210023 , China
| | - Lei Zhang
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts & Telecommunications , 9 Wenyuan Road , Nanjing 210023 , China
| | - Li Liu
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts & Telecommunications , 9 Wenyuan Road , Nanjing 210023 , China
| | - Bin Wang
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts & Telecommunications , 9 Wenyuan Road , Nanjing 210023 , China
| | - Jieqiong Bai
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts & Telecommunications , 9 Wenyuan Road , Nanjing 210023 , China
| | - Chao Shen
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts & Telecommunications , 9 Wenyuan Road , Nanjing 210023 , China
| | - Yu Chen
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts & Telecommunications , 9 Wenyuan Road , Nanjing 210023 , China
| | - Quli Fan
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts & Telecommunications , 9 Wenyuan Road , Nanjing 210023 , China
| | - Shufen Chen
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts & Telecommunications , 9 Wenyuan Road , Nanjing 210023 , China
| | - Weibing Wu
- Jiangsu Provincial Key Lab of Pulp & Paper Science & Technology , Nanjing Forestry University , Nanjing 210037 , P. R. China
| | - Xiaomiao Feng
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts & Telecommunications , 9 Wenyuan Road , Nanjing 210023 , China
| | - Lianhui Wang
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts & Telecommunications , 9 Wenyuan Road , Nanjing 210023 , China
| | - Wei Huang
- Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), National Synergistic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts & Telecommunications , 9 Wenyuan Road , Nanjing 210023 , China
- Shaanxi Institute of Flexible Electronics (SIFE) , Northwestern Polytechnical University (NPU) , Xi'an 710072 , China
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Jung DW, Kim JM, Yun HJ, Yi GR, Cho JY, Jung H, Lee G, Chae WS, Nam KM. Understanding metal-enhanced fluorescence and structural properties in Au@Ag core-shell nanocubes. RSC Adv 2019; 9:29232-29237. [PMID: 35528395 PMCID: PMC9071844 DOI: 10.1039/c9ra05103a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 09/09/2019] [Indexed: 12/12/2022] Open
Abstract
Au@Ag core–shell structures have received particular interest due to their localized surface plasmon resonance properties and great potential as oxygen reduction reaction catalysts and building blocks for self-assembly. In this study, Au@Ag core–shell nanocubes (Au@AgNCs) were fabricated in a facile manner via stepwise Ag reduction on Au nanoparticles (AuNPs). The size of the Au@AgNCs and their optical properties can be simply modulated by changing the Ag shell thickness. Structural characterization has been carried out by TEM, SAED, and XRD. The metal-induced fluorescence properties of probe molecules near the Au@AgNCs were measured during sedimentation of the Au@AgNCs. The unique ring-like building block of Au@AgNCs has dual optical functions as a fluorescence quencher or fluorescence enhancement medium depending on the assembled regions. The unique ring-like building block of Au@AgNCs has dual optical functions as a fluorescence quencher and fluorescence enhancement medium.![]()
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Affiliation(s)
- Dae-Woong Jung
- Korea Basic Science Institute Daejeon 34133 Republic of Korea .,Department of Chemical Engineering, Sungkyunkwan University Suwon 16419 Republic of Korea
| | - Jun Min Kim
- Korea Basic Science Institute Daejeon 34133 Republic of Korea .,Department of Chemical Engineering, Sungkyunkwan University Suwon 16419 Republic of Korea
| | - Hyung Joong Yun
- Korea Basic Science Institute Daejeon 34133 Republic of Korea
| | - Gi-Ra Yi
- Department of Chemical Engineering, Sungkyunkwan University Suwon 16419 Republic of Korea
| | - Jung Young Cho
- Korea Institute of Ceramic Engineering and Technology Jinju 52851 Republic of Korea
| | - Haeun Jung
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University Busan 46241 Korea
| | - Gaehang Lee
- Korea Basic Science Institute Daejeon 34133 Republic of Korea
| | - Weon-Sik Chae
- Analysis Research Division, Daegu Center, Korea Basic Science Institute Daegu 41566 Republic of Korea
| | - Ki Min Nam
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University Busan 46241 Korea
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Russo L, Sánchez-Purrà M, Rodriguez-Quijada C, Leonardo BM, Puntes V, Hamad-Schifferli K. Detection of resistance protein A (MxA) in paper-based immunoassays with surface enhanced Raman spectroscopy with AuAg nanoshells. NANOSCALE 2019; 11:10819-10827. [PMID: 31135010 DOI: 10.1039/c9nr02397f] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Myxovirus protein A (MxA) is a biomarker that can be used to distinguish between viral and bacterial infections. While MxA lateral flow assays (LFAs) have been successfully used for viral vs. bacterial differential diagnosis for children, the clinically relevant level of MxA for adults has been reported to be 100 times lower, which is too low for traditional LFAs. We present results applying the use of surface enhanced Raman spectroscopy (SERS) to detect MxA. AuAg nanoshells (AuAg NSs) were used to enhance the Raman signal of mercaptobenzoic acid (4-MBA), enabling readout by SERS. The AuAg NSs were conjugated to antibodies for the biomarker of interest, resulting in a "nanotag", that could be used in a dipstick immunoassay for detection. We first optimized the nanotag parameters using anti-human IgG/human IgG as a model antibody/antigen system, and then demonstrated detection of MxA using anti-MxA antibodies. We show that SERS readout of immunoassays for MxA can quantify MxA levels at clinically relevant levels for adult viral infection.
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Affiliation(s)
- Lorenzo Russo
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
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14
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Li K, Liu G, Zhang S, Dai Y, Ghafoor S, Huang W, Zu Z, Lu Y. A porous Au-Ag hybrid nanoparticle array with broadband absorption and high-density hotspots for stable SERS analysis. NANOSCALE 2019; 11:9587-9592. [PMID: 31062804 DOI: 10.1039/c9nr01744e] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Constructing high-density hotspots is of crucial importance in surface enhanced Raman scattering (SERS). In this paper, we present a large-area and broadband porous Au-Ag hybrid nanoparticle array which was fabricated by an ultra-thin alumina mask (UTAM) technique incorporated with annealing and galvanic replacement techniques. Experimental results and numerical simulations demonstrated that the porous Au-Ag hybrid nanoparticle array possessed enormous hotspots for high sensitivity, uniformity, and stability in SERS analysis. A large Raman enhancement factor of 2.2 × 107 was achieved with a relative standard deviation (RSD) of 7.7%, leading to excellent reliability for Raman detection. Furthermore, this novel substrate exhibited a long shelf time in an ambient environment and promising practical applications in many SERS-based quantitative analytical and biomedical sensing techniques.
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Affiliation(s)
- Kuanguo Li
- College of Physics and Electronics Information & Anhui Province Key Laboratory of Optoelectric Materials Science and Technology, Anhui Normal University, Wuhu, Anhui 241000, China.
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15
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Determination of 17β-estradiol by surface-enhanced Raman spectroscopy merged with hybridization chain reaction amplification on Au@Ag core-shell nanoparticles. Mikrochim Acta 2019; 186:52. [DOI: 10.1007/s00604-018-3114-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 11/25/2018] [Indexed: 10/27/2022]
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16
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Synthesis of Bimetallic Gold-Silver (Au-Ag) Nanoparticles for the Catalytic Reduction of 4-Nitrophenol to 4-Aminophenol. Catalysts 2018. [DOI: 10.3390/catal8100412] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Bimetallic gold-silver nanoparticles as unique catalysts were prepared using seed colloidal techniques. The catalytic capabilities of the nanoparticles were ascertained in the reduction of 4-nitrophenol to 4-aminophenol in the presence of sodium borohydride. Our results clearly showed that the rate of 4-NP reduction to 4-AP increased with a corresponding decrease in the diameter of the bimetallic NPs. The Au-Ag nanoparticles prepared with 5.0 mL Au seed volume indicated higher reduction activity, which was approximately 1.2 times higher than that of 2.0 mL Au seed volume in the reductive conversion of 4-NP to 4-AP. However, the monometallic NPs showed relatively less catalytic activity in the reductive conversion of 4-NP to 4-AP compared to bimetallic Au-Ag nanoparticles. Our studies also reinforced the improved catalytic properties of the bimetallic Au-Ag nanoparticles structure with a direct impact of the size or diameter and relative composition of the bimetallic catalytic nanoparticles.
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17
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Zou J, Song W, Xie W, Huang B, Yang H, Luo Z. A simple way to synthesize large-scale Cu 2O/Ag nanoflowers for ultrasensitive surface-enhanced Raman scattering detection. NANOTECHNOLOGY 2018; 29:115703. [PMID: 29408804 DOI: 10.1088/1361-6528/aaa72b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Here, we report a simple strategy to prepare highly sensitive surface-enhanced Raman spectroscopy (SERS) substrates based on Ag decorated Cu2O nanoparticles by combining two common techniques, viz, thermal oxidation growth of Cu2O nanoparticles and magnetron sputtering fabrication of a Ag nanoparticle film. Methylene blue is used as the Raman analyte for the SERS study, and the substrates fabricated under optimized conditions have very good sensitivity (analytical enhancement factor ∼108), stability, and reproducibility. A linear dependence of the SERS intensities with the concentration was obtained with an R 2 value >0.9. These excellent properties indicate that the substrate has great potential in the detection of biological and chemical substances.
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Affiliation(s)
- Junyan Zou
- Department of Electronic Engineering, Jinan University, Guangzhou 510632, People's Republic of China
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18
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Wen TC, Lu CW, Hsieh WC, Chang ST, Yang YT, Deng JP. Heat-induced morphological transformation of gold nanodumbbells in ionic surfactant solutions. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2017.12.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Yang X, Li J, Zhao Y, Yang J, Zhou L, Dai Z, Guo X, Mu S, Liu Q, Jiang C, Sun M, Wang J, Liang W. Self-assembly of Au@Ag core-shell nanocuboids into staircase superstructures by droplet evaporation. NANOSCALE 2017; 10:142-149. [PMID: 29159329 DOI: 10.1039/c7nr05767a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Plasmonic nanomaterials, along with their assemblies, provide numerous applications due to their profound optical properties. In this work, we report the self-assembly of Au@Ag core-shell nanocuboids (NCs) into staircase superstructures in both vertical and horizontal orientations through two-stage droplet evaporation. Each stair is composed of a uniform well-aligned monolayer of NCs. The gap distance between NCs can be greatly shrunk to boost the corresponding surface-enhanced Raman scattering (SERS) performance using an ethanol wash method. The SERS performance of the assembled NCs is calculated by finite-difference time-domain (FDTD) simulation, and studied against the step number using 4-mercaptobenzoic acid as a Raman reporter molecule. The increasing EF with the increase of layer number proves that the plasmon mode propagates well in our uniformly aligned assemblies.
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Affiliation(s)
- Xianzhong Yang
- Beijing National Laboratory for Condensed Matter Physics, Beijing Key Laboratory for Nanomaterials and Nanodevices, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China.
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20
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Zhao M, Guo H, Liu W, Tang J, Wang L, Zhang B, Xue C, Liu J, Zhang W. Silica Cladding of Ag Nanoparticles for High Stability and Surface-Enhanced Raman Spectroscopy Performance. NANOSCALE RESEARCH LETTERS 2016; 11:403. [PMID: 27637895 PMCID: PMC5025424 DOI: 10.1186/s11671-016-1604-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 08/31/2016] [Indexed: 06/06/2023]
Abstract
For high-precision biochemical sensing, surface-enhanced Raman spectroscopy (SERS) has been demonstrated to be a highly sensitive spectroscopic analytical method and Ag is considered to be the best material for SERS performance. Due to the high surface activity of Ag nanoparticles, the high stability of Ag nanostructures, especially in moist environments, is one of the key issues that need to be solved. A method for silica (SiO2) cladding of Ag nanoparticles (NPs) is demonstrated here for high sensitivity and long-term stability when putted in aqueous solution. The chemically inert, transparent, hydrophilic, and bio-compatible SiO2 surface acts as the protection layer for the Ag nanoparticles, which can also enhance the Raman intensity to a certain extent. In our study, the Ag@SiO2 core-shell substrate can detect crystal violet solutions with molar concentrations down to 10(-12) M. After 24 h of immersion, the reduction in Raman scattering intensity is about 85 % for sole Ag NP films, compared to 12 % for the Ag coated with a 10-nm SiO2 layer. This thickness was found to be optimum for Ag@SiO2 core-shell substrates with long-term stability and high SERS activity.
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Affiliation(s)
- Miaomiao Zhao
- Science and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China
| | - Hao Guo
- Science and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China
| | - Wenyao Liu
- Science and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China
| | - Jun Tang
- Science and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China
| | - Lei Wang
- Science and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China
| | - Binzhen Zhang
- Science and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China
| | - Chenyang Xue
- Science and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China
| | - Jun Liu
- Science and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China.
| | - Wendong Zhang
- Science and Technology on Electronic Test & Measurement Laboratory, North University of China, Taiyuan, Shanxi, 030051, China
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21
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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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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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Li Z, Zheng X, Zheng J. A non-enzymatic sensor based on Au@Ag nanoparticles with good stability for sensitive detection of H2O2. NEW J CHEM 2016. [DOI: 10.1039/c5nj02582f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of Au@Ag NPs by a seed-mediated growth procedure and fabrication of a non-enzymatic H2O2 sensor.
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Affiliation(s)
- Zhi Li
- Institute of Analytical Science
- Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry
- Northwest University
- Xi'an
- China
| | - Xiaohui Zheng
- Institute of Analytical Science
- Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry
- Northwest University
- Xi'an
- China
| | - Jianbin Zheng
- Institute of Analytical Science
- Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry
- Northwest University
- Xi'an
- China
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24
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Zhou L, Zhou J, Feng Z, Wang F, Xie S, Bu S. Immunoassay for tumor markers in human serum based on Si nanoparticles and SiC@Ag SERS-active substrate. Analyst 2016; 141:2534-41. [DOI: 10.1039/c6an00003g] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An immunoassay protocol is described to detect tumor markers in human serum based on a sandwich structure consisting of nano-Si immune probes and SiC@Ag SERS-active immune substrate.
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Affiliation(s)
- Lu Zhou
- Institute of Photonics
- Faculty of Science
- Ningbo University
- Ningbo 315211
- China
| | - Jun Zhou
- Institute of Photonics
- Faculty of Science
- Ningbo University
- Ningbo 315211
- China
| | - Zhao Feng
- Institute of Photonics
- Faculty of Science
- Ningbo University
- Ningbo 315211
- China
| | - Fuyan Wang
- Diabetes Center
- Zhejiang Provincial Key Laboratory of Pathophysiology
- School of Medicine
- Ningbo University
- Ningbo, 325211
| | - Shushen Xie
- Key Laboratory of Optoelectronic Science & Technology for Medicine of Ministry of Education
- Fujian Normal University
- Fuzhou 350007
- China
| | - Shizhong Bu
- Diabetes Center
- Zhejiang Provincial Key Laboratory of Pathophysiology
- School of Medicine
- Ningbo University
- Ningbo, 325211
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25
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Liu Y, Zhou J, Yuan X, Jiang T, Petti L, Zhou L, Mormile P. Hydrothermal synthesis of gold polyhedral nanocrystals by varying surfactant concentration and their LSPR and SERS properties. RSC Adv 2015. [DOI: 10.1039/c5ra10781d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Polyhedral gold nanocrystals with distinctive geometric-dependent plasmonic properties were prepared through hydrothermal strategy.
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Affiliation(s)
- Yanting Liu
- Institute of Photonics
- Faculty of Science
- Ningbo University
- Ningbo 315211
- China
| | - Jun Zhou
- Institute of Photonics
- Faculty of Science
- Ningbo University
- Ningbo 315211
- China
| | - Xiaocong Yuan
- Institute of Micro & Nano Optics
- Shenzhen University
- Shenzhen
- China
| | - Tao Jiang
- Institute of Photonics
- Faculty of Science
- Ningbo University
- Ningbo 315211
- China
| | - Lucia Petti
- Institute of Cybernetics “E. Caianiello” of CNR
- 80072 Pozzuoli
- Italy
| | - Lu Zhou
- Institute of Photonics
- Faculty of Science
- Ningbo University
- Ningbo 315211
- China
| | - Pasquale Mormile
- Institute of Cybernetics “E. Caianiello” of CNR
- 80072 Pozzuoli
- Italy
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