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Chen J, Li M, Yang Y, Liu H, Zhao B, Ozaki Y, Song W. In-situ surface enhanced Raman spectroscopy revealing the role of metal-organic frameworks on photocatalytic reaction selectivity on highly sensitive and durable Cu-CuBr substrate. J Colloid Interface Sci 2024; 660:669-680. [PMID: 38271803 DOI: 10.1016/j.jcis.2024.01.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 01/02/2024] [Accepted: 01/09/2024] [Indexed: 01/27/2024]
Abstract
Photocatalytic reactions using copper-based nanomaterials have emerged as a new paradigm in green technology. Selective photocatalysis is very important for improving energy utilization efficiency, and in order to directional improve catalytic selectivity, it is necessary to understand the mechanism of interfacial reactions at the molecular level. Therefore, a unique bifunctional Cu-CuBr substrate is first fabricated via an electrochemical method, which overcomes the instability of traditional copper-based materials and endows high surface-enhanced Raman spectroscopy (SERS) sensitivity and photocatalytic performance and can be stored stably for more than a year. Further modification of the surface with Metal-Organic Frameworks (MOFs) containing carboxyl functional groups can significantly tune the surface properties of the substrate. This increases the adsorption of cationic dyes to improve the SERS effect, and 10-10 M methylene blue can easily be detected with this substrate. Surprisingly, in-situ SERS monitoring of the interfacial photocatalytic dehalogenation reaction of aromatic halides through its intrinsic SERS effect reveal two competing selective reaction pathways, self-coupling and hydrogenation. Typically, the SERS spectra reveal that the latter's selectivity was greatly enhanced after MOFs modification, and the yield rate of the hydrogenated product increased from 27.6 % to 46.9 % (selectivity increased from 32.7 % to 51.5 %). This proves that the surface properties of catalysts, especially the affinity for reaction intermediates, can effectively regulate catalytic selectivity.
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Affiliation(s)
- Junjie Chen
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Mengyuan Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Yumei Yang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Hao Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Bing Zhao
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Yukihiro Ozaki
- School of Biological and Environmatal Sciences, Kwansei Gakuin University, 1-Gakuen-Uegahara, Sanda, Hyogo 669-1330, Japan
| | - Wei Song
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, PR China.
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2
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Cui Y, Xu L, Li H, Wang X, Sun F, Wang H, Guo X, Zhang Y, Gao H, An Q. Flexible nano-cloth-like Ag cluster@rGO with ultrahigh SERS sensitivity for capture-optimization-detection due to effective molecule-substrate interactions. NANOSCALE 2022; 14:12313-12321. [PMID: 35968803 DOI: 10.1039/d2nr02033e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Surface-enhanced Raman scattering (SERS) is a rapid and promising detection technique for trace molecules. A central goal of research in this area is to achieve the highly sensitive detection of molecules built on a systematic understanding of enhancement mechanisms. Herein, we develop a Ag cluster@rGO composite nanostructure, which utilizes strong molecular adsorption to achieve ultrahigh SERS sensitivity. Ag clusters are prepared without additional reducing agents, leaving a low carbon footprint in the fabrication process. Finite-difference time-domain (FDTD) simulations show strong electromagnetic field enhancements generated at the edges and interstices of Ag clusters due to the specificity of their structure. Density Functional Theory (DFT) calculations show that the HOMO-LUMO energy gap value is significantly reduced when Ag cluster@rGO forms a composite system with the target molecule, which enables efficient charge transfer between the substrate and molecules, resulting in charge transfer enhancement. A detection limit of 10-14 M using our substrate can be achieved for the environmental pollutant dye rhodamine 6G (Rh6G). The detection limits of bisphenol A (BPA) and its derivatives reach nanomolar levels with good signal stability. More importantly, we demonstrate the ability to rapidly screen BPA migration in Chinese Baijiu. Our SERS platform can be further developed for environmental pollution control and food safety.
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Affiliation(s)
- Yanying Cui
- State Key Laboratory of Geological Processes & Mineral Resources, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China.
| | - Linan Xu
- College of Materials Engineering, North China Institute of Aerospace Engineering, Langfang 065000, China
| | - Haitao Li
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China.
| | - Xuan Wang
- State Key Laboratory of Geological Processes & Mineral Resources, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China.
| | - Fuwei Sun
- Chemistry department, Tsinghua University, 100084, P. R. China
| | - Huan Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China.
| | - Xinguang Guo
- China National Institute of Food and Fermentation Industries Co, Ltd, Beijing 100015, China.
| | - Yihe Zhang
- State Key Laboratory of Geological Processes & Mineral Resources, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China.
| | - Hongbo Gao
- China National Institute of Food and Fermentation Industries Co, Ltd, Beijing 100015, China.
| | - Qi An
- State Key Laboratory of Geological Processes & Mineral Resources, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China.
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Sridhar K, Inbaraj BS, Chen BH. An improved surface enhanced Raman spectroscopic method using a paper-based grape skin-gold nanoparticles/graphene oxide substrate for detection of rhodamine 6G in water and food. CHEMOSPHERE 2022; 301:134702. [PMID: 35472615 DOI: 10.1016/j.chemosphere.2022.134702] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 04/08/2022] [Accepted: 04/20/2022] [Indexed: 06/14/2023]
Abstract
Organic toxins are persistent chemicals of global concern capable of accumulating in environment and food. Surface enhanced Raman spectroscopy (SERS) is a promising technique that facilitates onsite detection of organic toxins. However, the fabrication of a SERS substrate is complicated and difficult to provide flexibility, fastness and cost-effectiveness. This study aims to develop a paper-based SERS method using grape skin-gold nanoparticles/graphene oxide (GE-AuNPs/GO) as SERS substrate and evaluate its efficiency with rhodamine 6G (Rh6G) as a model organic toxin and a real water and food contaminant. GE-AuNPs synthesized by green method using grape skin waste extract and GE-AuNPs/GO showed a surface plasmon resonance at 536 and 539 nm, particle size 18.6 and 19.5 nm, and zeta potential -44.6 and -59.7 mV, respectively. Paper-based SERS substrates were prepared by coating a hydrophobic thin-film of 30% polydimethylsiloxane solution in hexane on Whatman no. 1 filter paper, followed by drop-casting GE-AuNPs or GE-AuNPs/GO and drying. The SERS signals of Rh6G showed an enhancement factor of 5.8 × 104 for GE-AuNPs and 1.92 × 109 for GE-AuNPs/GO, implying that a combination of electromagnetic surface plasmon, charge transfer and molecular resonances may be responsible for a higher enhancement of signal by the latter. A low detection limit of 7.33 × 10-11 M in the linear range of 10-11-10-5 M was obtained for GE-AuNPs/GO, while the relative standard deviation of repeatability and reproducibility was 9.6 and 12.6%, respectively. Paper-based GE-AuNPs/GO SERS substrate was highly stable as <20% loss in efficiency was shown over a 60-day storage period. Application to real samples showed a high recovery of Rh6G from tap water (93.9-100.8%) as well as food samples such as red chilli powder (91.0-95.4%), red glutinous rice ball (96.6-98.3%) and tomato ketchup (98.9-102.3%) after QuEChERS extraction. Collectively, the developed paper-based GE-AuNPs/GO can be a potential substrate for sensitive onsite detection of rhodamine 6G by SERS method.
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Affiliation(s)
- Kandi Sridhar
- Department of Food Science, Fu Jen Catholic University, New Taipei City 24205, Taiwan
| | | | - Bing-Huei Chen
- Department of Food Science, Fu Jen Catholic University, New Taipei City 24205, Taiwan; Department of Nutrition, China Medical University, Taichung 40402, Taiwan.
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4
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Serafinelli C, Fantoni A, Alegria ECBA, Vieira M. Plasmonic Metal Nanoparticles Hybridized with 2D Nanomaterials for SERS Detection: A Review. BIOSENSORS 2022; 12:bios12040225. [PMID: 35448285 PMCID: PMC9029226 DOI: 10.3390/bios12040225] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/04/2022] [Accepted: 04/06/2022] [Indexed: 05/27/2023]
Abstract
In SERS analysis, the specificity of molecular fingerprints is combined with potential single-molecule sensitivity so that is an attractive tool to detect molecules in trace amounts. Although several substrates have been widely used from early on, there are still some problems such as the difficulties to bind some molecules to the substrate. With the development of nanotechnology, an increasing interest has been focused on plasmonic metal nanoparticles hybridized with (2D) nanomaterials due to their unique properties. More frequently, the excellent properties of the hybrids compounds have been used to improve the drawbacks of the SERS platforms in order to create a system with outstanding properties. In this review, the physics and working principles of SERS will be provided along with the properties of differently shaped metal nanoparticles. After that, an overview on how the hybrid compounds can be engineered to obtain the SERS platform with unique properties will be given.
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Affiliation(s)
- Caterina Serafinelli
- Instituto Superior de Engenharia de Lisboa—Instituto Politécnico de Lisboa, 1949-014 Lisboa, Portugal; (A.F.); (E.C.B.A.A.); (M.V.)
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
- CTS—Centre of Technology and Systems, Caparica, 2829-516 Almada, Portugal
- Department of Electrotechnical and Computer Engineering, Faculty of Science and Technology, Universidade NOVA de Lisboa, DEE-FCT-UNL, Caparica, 2829-516 Almada, Portugal
| | - Alessandro Fantoni
- Instituto Superior de Engenharia de Lisboa—Instituto Politécnico de Lisboa, 1949-014 Lisboa, Portugal; (A.F.); (E.C.B.A.A.); (M.V.)
- CTS—Centre of Technology and Systems, Caparica, 2829-516 Almada, Portugal
| | - Elisabete C. B. A. Alegria
- Instituto Superior de Engenharia de Lisboa—Instituto Politécnico de Lisboa, 1949-014 Lisboa, Portugal; (A.F.); (E.C.B.A.A.); (M.V.)
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - Manuela Vieira
- Instituto Superior de Engenharia de Lisboa—Instituto Politécnico de Lisboa, 1949-014 Lisboa, Portugal; (A.F.); (E.C.B.A.A.); (M.V.)
- CTS—Centre of Technology and Systems, Caparica, 2829-516 Almada, Portugal
- Department of Electrotechnical and Computer Engineering, Faculty of Science and Technology, Universidade NOVA de Lisboa, DEE-FCT-UNL, Caparica, 2829-516 Almada, Portugal
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5
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M K R, Balakrishnan J. Investigating the thermal transport in gold decorated graphene by opto-thermal Raman technique. NANOTECHNOLOGY 2022; 33:135706. [PMID: 34937004 DOI: 10.1088/1361-6528/ac45c2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 12/22/2021] [Indexed: 06/14/2023]
Abstract
We report a systematic study on the thermal transport properties of gold nanoparticles (Au NPs) decorated single-layer graphene on a SiO2/Si substrate by the opto-thermal Raman technique. Our results, with moderate Au NPs coverage (<10%), demonstrate an enhancement in the thermal conductivity of graphene by ∼55% from its pristine value and a decrement in the interface conductance by a factor of 1.5. A detailed analysis of our results shows the importance of the photo-thermal conversion efficiency of Au NPs, plasmon-phonon coupling and lattice modifications in the graphene developed after gold nanoparticles deposition in enhancing the thermal conductivity and reducing the interface thermal conductance of the system. Our study paves way for a better understanding of the thermal management in such hybrid systems, which are envisioned as excellent candidates for optoelectronics and photonics applications.
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Affiliation(s)
- Ranjuna M K
- Department of Physics, Indian Institute of Technology Palakkad, Palakkad-678623, Kerala, India
| | - Jayakumar Balakrishnan
- Department of Physics, Indian Institute of Technology Palakkad, Palakkad-678623, Kerala, India
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Kim SM, Kim J, Yim G, Ahn HJ, Lee M, Kim TH, Park C, Min J, Jang H, Lee T. Fabrication of a surface-enhanced Raman spectroscopy-based analytical method consisting of multifunctional DNA three-way junction-conjugated porous gold nanoparticles and Au-Te nanoworm for C-reactive protein detection. Anal Bioanal Chem 2021; 414:3197-3204. [PMID: 34350496 DOI: 10.1007/s00216-021-03559-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 06/17/2021] [Accepted: 07/16/2021] [Indexed: 01/10/2023]
Abstract
C-Reactive protein (CRP) is a biomarker of inflammatory responses and an index for assessing the risk of cardiovascular disease and estimating prognosis. In this study, we constructed a surface-enhanced Raman spectroscopy (SERS) biosensor composed of a multifunctional DNA three-way junction (DNA 3WJ), porous gold nanoplates (pAuNPs), and an Au-Te nanoworm structure for detection of CRP. The pAuNP and Au-Te nanostructures were synthesized by galvanic replacement reactions, and the morphology was confirmed by transmission electron microscopy, scanning electron microscopy, and dynamic light scattering (DLS). To generate the SERS signal, the Au-Te nanostructure was immobilized on an indium-tin oxide substrate, and the thiol-modified CRP aptamer was then self-assembled onto the modified substrate for CRP recognition. To amplify the SERS signal and identify the Raman tag, the multifunctional DNA 3WJ was conjugated with the pAuNPs, and each fragment of 3WJ was functionalized to biotin (pAuNP conjugation), methylene blue (Raman reporter), and CRP aptamer (target binding). The results were confirmed by gel electrophoresis. For conjugation between pAuNPs and DNA 3WJ, avidin was encapsulated in pAuNPs, and the conjugation structure was confirmed by DLS. The fabricated SERS biosensor showed detection limits of 2.23 pM in phosphate-buffered saline and 3.11 pM in diluted human serum. Overall, the proposed biosensor may have potential applications as a SERS biosensor platform.
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Affiliation(s)
- Soo Min Kim
- Department of Chemical Engineering, Kwangwoon University, Wolgye-dong, Nowon-gu, Seoul, 01899, Republic of Korea
| | - Jinmyeong Kim
- Department of Chemical Engineering, Kwangwoon University, Wolgye-dong, Nowon-gu, Seoul, 01899, Republic of Korea
| | - Gyeonghye Yim
- Department of Chemistry, Kwangwoon University, Wolgye-dong, Nowon-gu, Seoul, 01899, Republic of Korea
| | - Ho Jung Ahn
- Department of Chemistry, Kwangwoon University, Wolgye-dong, Nowon-gu, Seoul, 01899, Republic of Korea
| | - Myoungro Lee
- Department of Chemical Engineering, Kwangwoon University, Wolgye-dong, Nowon-gu, Seoul, 01899, Republic of Korea
| | - Tae-Hyung Kim
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul, 06974, South Korea
| | - Chulhwan Park
- Department of Chemical Engineering, Kwangwoon University, Wolgye-dong, Nowon-gu, Seoul, 01899, Republic of Korea
| | - Junhong Min
- School of Integrative Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul, 06974, South Korea.
| | - Hongje Jang
- Department of Chemistry, Kwangwoon University, Wolgye-dong, Nowon-gu, Seoul, 01899, Republic of Korea.
| | - Taek Lee
- Department of Chemical Engineering, Kwangwoon University, Wolgye-dong, Nowon-gu, Seoul, 01899, Republic of Korea.
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7
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Zhu W, Feng X, Liu Z, Zhao M, He P, Yang S, Tang S, Chen D, Guo Q, Wang G, Ding G. Sensitive, Reusable, Surface-Enhanced Raman Scattering Sensors Constructed with a 3D Graphene/Si Hybrid. ACS APPLIED MATERIALS & INTERFACES 2021; 13:23081-23091. [PMID: 33957757 DOI: 10.1021/acsami.1c02182] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Surface-enhanced Raman scattering (SERS) substrates based on graphene and its derivatives have recently attracted attention among those interested in the detection of trace molecules; however, these substrates generally show poor uniformity, an unsatisfactory enhancement factor, and require a complex fabrication process. Herein, we design and fabricate three-dimensional (3D) graphene/silicon (3D-Gr/Si) heterojunction SERS substrates to detect various types of molecules. Notably, the detection limit of 3D-Gr/Si can reach 10-10 M for rhodamine 6G (R6G) and rhodamine B (RB), 10-7 M for crystal violet (CRV), copper(II) phthalocyanine (CuPc), and methylene blue (MB), 10-8 M for dopamine (DA), 10-6 M for bovine serum albumin (BSA), and 10-5 M for melamine (Mel), which is superior to most reported graphene-based SERS substrates. Besides, the proposed 3D-Gr/Si heterojunction SERS substrates can achieve a high uniformity with relative standard deviations (RSDs) of less than 5%. Moreover, the 3D-Gr/Si SERS substrates are reusable after washing with ethyl alcohol to remove the adsorbed molecules. These excellent SERS performances are attributed to the novel 3D structure and abundantly exposed atomically thin edges, which facilitate charge transfer between 3D-Gr and probe molecules. We believe that the 3D-Gr/Si heterojunction SERS substrates offer potential for practical applications in biochemical molecule detection and provide insight into the design of high-performance SERS substrates.
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Affiliation(s)
- Wei Zhu
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo 315211, P. R. China
| | - Xiaoqiang Feng
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo 315211, P. R. China
| | - Zhiduo Liu
- State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, P. R. China
| | - Menghan Zhao
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo 315211, P. R. China
| | - Peng He
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, P. R. China
| | - Siwei Yang
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, P. R. China
| | - Shiwei Tang
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo 315211, P. R. China
| | - Da Chen
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo 315211, P. R. China
| | - Qinglei Guo
- School of Microelectronics, Shandong University, Jinan 250100, P. R. China
| | - Gang Wang
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo 315211, P. R. China
| | - Guqiao Ding
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo 315211, P. R. China
- State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, P. R. China
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8
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Fan X, Zhang H, Zhao X, Lv K, Zhu T, Xia Y, Yang C, Bai C. Three-dimensional SERS sensor based on the sandwiched G@AgNPs@G/PDMS film. Talanta 2021; 233:122481. [PMID: 34215109 DOI: 10.1016/j.talanta.2021.122481] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 11/28/2022]
Abstract
Three-dimensional (3D) SERS substrate with the denser "hotspots" is synthesized by the constriction of PDMS film decorated with sandwiched graphene@AgNPs@graphene (G@AgNPs@G) nanostructure. Graphene layers above and below the AgNPs are used to absorb molecules onto the "hotspots", and prevent the oxidation of AgNPs in our design. PDMS films can be easily shrunk for 3D structures, causing advantages in enhancement ability and light-matter interaction. Benefiting from the above advantages, a detection limit of 10-14 M (CV) and enhancement factor (EF) of 3.9 × 109 were obtained in our experiment. Theoretical analyses (FDTD) were also used to study the enhancement mechanism. For practical purposes, in-situ detection of MG molecules on the fish surface and the label-free detection of DNA base of adenine (A) and cytosine (C) were also studied. The high enhancement factor, great sensitivity, reliability, and stability of substrate reasonably proved that it can be used as an excellent SERS substrate for biomolecular detection.
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Affiliation(s)
- Xiangyu Fan
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, China
| | - Hao Zhang
- Beijing Key Laboratory for Nano-Photonics and Nano-Structure (NPNS) Center for Condensed Matter Physics Department of Physics, Capital Normal University, Beijing, 100048, China
| | - XinRu Zhao
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, China
| | - Ke Lv
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, China
| | - Tiying Zhu
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, China
| | - Yaping Xia
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, China
| | - Cheng Yang
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, China.
| | - Chengjie Bai
- School of Physics and Electronics, Shandong Normal University, Jinan, 250014, China.
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9
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Murugan E, Santhoshkumar S, Govindaraju S, Palanichamy M. Silver nanoparticles decorated g-C 3N 4: An efficient SERS substrate for monitoring catalytic reduction and selective Hg 2+ions detection. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 246:119036. [PMID: 33070011 DOI: 10.1016/j.saa.2020.119036] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 09/02/2020] [Accepted: 09/29/2020] [Indexed: 06/11/2023]
Abstract
Graphitic carbon nitride supported Ag NPs(AgNPs@g-C3N4) were synthesized by an in-situ chemical reduction using a green reducing agent, tannic acid. They were characterized by UV-Vis, FTIR, XPS, XRD, FESEM, EDAX and HRTEM. They were very much SERS sensitive, and capable of detecting methylene blue and 4-aminothiophenol at 1 × 10-12 M and 1 × 10-10 M, respectively with the corresponding SERS enhancement factor of 1.4 × 108 and 4.7 × 107. Apart from its high SERS sensitivity, it exhibited high catalytic activity for the reduction of MB with NaBH4. So, their SERS activity and catalytic activity were combined successfully to monitor catalytic reduction of MB by SERS technique. Further, the SERS activity towards MB was also employed for the detection/quantification of free Hg2+ ions in aqueous solution. The SERS intensity of MB drastically decreased in the presence of Hg2+ ions, and hence it provides novel route to detect and quantify the latter. Presence of Ca2+, Mg2+, Cu2+ and Cd2+ions showed zero interference for it. So, this study proves that Ag NPs@g-C3N4 as a unique substrate for multiple SERS applications.
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Affiliation(s)
- E Murugan
- Department of Physical Chemistry, School of Chemical Science, University of Madras, Guindy Campus, Chennai 600 025, Tamilnadu, India.
| | - S Santhoshkumar
- Department of Physical Chemistry, School of Chemical Science, University of Madras, Guindy Campus, Chennai 600 025, Tamilnadu, India
| | - S Govindaraju
- Department of Physical Chemistry, School of Chemical Science, University of Madras, Guindy Campus, Chennai 600 025, Tamilnadu, India
| | - M Palanichamy
- Department of Physical Chemistry, School of Chemical Science, University of Madras, Guindy Campus, Chennai 600 025, Tamilnadu, India
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10
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Synthesis of Ag NPs layer and its application as SERS substrate in the determination of p-phenylenediamine. J Solid State Electrochem 2020. [DOI: 10.1007/s10008-020-04845-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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11
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Ma X, Liu H, Wen S, Xie Q, Li L, Jin J, Wang X, Zhao B, Song W. Ultra-sensitive SERS detection, rapid selective adsorption and degradation of cationic dyes on multifunctional magnetic metal-organic framework-based composite. NANOTECHNOLOGY 2020; 31:315501. [PMID: 32303010 DOI: 10.1088/1361-6528/ab8a8f] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In-situ and real-time ultra-sensitive monitoring for the degradation process of environmental pollutants is always an important issue of concern to many people. Herein, a multifunctional magnetic metal-organic framework (MOF)-based composite has been successfully constructed and applied in monitoring the disposal of cationic dyes. Owing to its particular MOFs shell and internal gold particles, the composite can be used as an efficient SERS substrate to ultra-sensitively detect the cationic dyes. Furthermore, the prepared MOF-based composite is also a peroxidase-like nanozyme, which can catalytically degrade the adsorbed cationic dyes. Additionally, the magnetic core in the MOF-based composite offers a good magnetic separation capacity, which makes a facile and rapid separation of the catalyst from the reacted solution for recyclability. This work has provided a new way to monitor the catalytic degradation process by SERS technique in the co-existence of catalyst and dye molecules in the reaction system, which can effectively eliminate the absorption of the catalyst compared with the UV-vis technique, showing promising applications in in-situ and real-time pollution disposal monitoring.
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Affiliation(s)
- Xiaowei Ma
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, People's Republic of China
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12
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Fabrication of Bioprobe Self-Assembled on Au-Te Nanoworm Structure for SERS Biosensor. MATERIALS 2020; 13:ma13143234. [PMID: 32708092 PMCID: PMC7412440 DOI: 10.3390/ma13143234] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/17/2020] [Accepted: 07/17/2020] [Indexed: 11/16/2022]
Abstract
In the present study, we propose a novel biosensor platform using a gold-tellurium (Au-Te) nanoworm structure through surface-enhanced Raman spectroscopy (SERS). Au-Tenanoworm was synthesized by spontaneous galvanic replacement of sacrificial Te nanorods templated with Au (III) cations under ambient conditions. The fabricated Au-Te nanoworm exhibited an interconnected structure of small spherical nanoparticles and was found to be effective at enhancing Raman scattering. The Au-Te nanoworm-immobilized substrate exhibited the ability to detect thyroxine using an aptamer-tagged DNA three-way junction (3WJ) and glycoprotein 120 (GP120) human immunodeficiency virus (HIV) using an antibody. The modified substrates were investigated by scanning electron microscopy and atomic force microscopy (AFM). The optimal Au-Te nanoworm concentration and immobilization time for the thyroxine biosensor platform were further determined by SERS experimentation. Thus, the present study showed that the Au-Te nanoworm structure could be applied to various biosensor platforms.
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Gong T, Huang Y, Wei Z, Huang W, Wei X, Zhang X. Magnetic assembled 3D SERS substrate for sensitive detection of pesticide residue in soil. NANOTECHNOLOGY 2020; 31:205501. [PMID: 32018230 DOI: 10.1088/1361-6528/ab72b7] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Three-dimensional (3D) surface enhanced Raman scattering (SERS) substrates were produced by magnetic force assisting self-assembled nanoparticles in arrayed holes. Compared to '2D' plasmonic structures used in conventional SERS substrates, the 'hot spots' existed on whole depth of the 3D SERS substrates, which greatly enhanced the sensitivity. The prepared 3D SERS substrate was able to detect 4-aminothiophenol with a concentration down to 1 pM. Furthermore, the substrate was applied to detect hexachlorobenzene residue in soil, indicating its great potential for rapid and sensitive detection of extreme low concentrated molecules, especially pollutants residues in foods and environments.
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Affiliation(s)
- Tianxun Gong
- State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054, People's Republic of China
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Graphene Plasmonic Fractal Metamaterials for Broadband Photodetectors. Sci Rep 2020; 10:6882. [PMID: 32327667 PMCID: PMC7181626 DOI: 10.1038/s41598-020-63099-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 03/23/2020] [Indexed: 12/04/2022] Open
Abstract
Metamaterials have recently established a new paradigm for enhanced light absorption in state-of-the-art photodetectors. Here, we demonstrate broadband, highly efficient, polarization-insensitive, and gate-tunable photodetection at room temperature in a novel metadevice based on gold/graphene Sierpinski carpet plasmonic fractals. We observed an unprecedented internal quantum efficiency up to 100% from the near-infrared to the visible range with an upper bound of optical detectivity of 1011 Jones and a gain up to 106, which is a fingerprint of multiple hot carriers photogenerated in graphene. Also, we show a 100-fold enhanced photodetection due to highly focused (up to a record factor of |E/E0| ≈ 20 for graphene) electromagnetic fields induced by electrically tunable multimodal plasmons, spatially localized in self-similar fashion on the metasurface. Our findings give direct insight into the physical processes governing graphene plasmonic fractal metamaterials. The proposed structure represents a promising route for the realization of a broadband, compact, and active platform for future optoelectronic devices including multiband bio/chemical and light sensors.
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Zhang CY, Zhao BC, Hao R, Wang Z, Hao YW, Zhao B, Liu YQ. Graphene oxide-highly anisotropic noble metal hybrid systems for intensified surface enhanced Raman scattering and direct capture and sensitive discrimination in PCBs monitoring. JOURNAL OF HAZARDOUS MATERIALS 2020; 385:121510. [PMID: 31704120 DOI: 10.1016/j.jhazmat.2019.121510] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 10/13/2019] [Accepted: 10/18/2019] [Indexed: 06/10/2023]
Abstract
Graphene oxide (GO)-anisotropic noble metal hybrid systems were developed as highly sensitive and reproducible surface enhanced Raman scattering (SERS) platform, in which ultrathin GO was embedded between two metallic layers of flower-like Ag nanoparticles (AgNFs) and gold nanostars (AuNSts). Due to multi-dimensional plasmonic coupling effect, the well-designed AgNFs-GO-AuNSts sandwich structures possessed ultrahigh sensitivity with the detection limit of R6G as low as 1.0 × 10-13 M and high enhancement factor of 2.59 × 107. Additionally, the GO interlayer could function as protective shell to suppress the oxidation of bottom silver layer and efficiently position the target analytes within hot spots. These features endow the substrate with high stability and excellent reproducibility (Signal variations < 7%). Particularly, the GO sandwiched substrate can be explored for the direct capture and sensitive detection of polychlorinated biphenyls (PCBs) without any organic modifier as molecule harvester. This minimum detected concentration was estimated as low as 3.4 × 10-6 M. The detection method based on GO mediated sandwich substrate avoids complicated surface modification manipulations and improves the substrate cleanness. Moreover, the resultant sandwich substrates can be used to recognize fingerprint peaks of different PCBs in their complex mixture, revealing great potential applications in SERS-based simultaneous detection of multiple pollutants with low affinity.
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Affiliation(s)
- Cong-Yun Zhang
- Shanxi Province Key Laboratory of Functional Nanocomposites, School of Materials Science and Engineering, North University of China, Taiyuan 030051, China
| | - Bai-Chuan Zhao
- Shanxi Province Key Laboratory of Functional Nanocomposites, School of Materials Science and Engineering, North University of China, Taiyuan 030051, China
| | - Rui Hao
- Shanxi Province Key Laboratory of Functional Nanocomposites, School of Materials Science and Engineering, North University of China, Taiyuan 030051, China
| | - Zhi Wang
- Shanxi Province Key Laboratory of Functional Nanocomposites, School of Materials Science and Engineering, North University of China, Taiyuan 030051, China
| | - Yao-Wu Hao
- The Department of Materials Science and Engineering, University of Texas at Arlington, Arlington, Texas 76019, USA
| | - Bin Zhao
- Shanxi Province Key Laboratory of Functional Nanocomposites, School of Materials Science and Engineering, North University of China, Taiyuan 030051, China.
| | - Ya-Qing Liu
- Shanxi Province Key Laboratory of Functional Nanocomposites, School of Materials Science and Engineering, North University of China, Taiyuan 030051, China.
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Li P, Zhang W, Liang C, Zeng XC. Two-dimensional MgX 2Se 4 (X = Al, Ga) monolayers with tunable electronic properties for optoelectronic and photocatalytic applications. NANOSCALE 2019; 11:19806-19813. [PMID: 31621752 DOI: 10.1039/c9nr07529a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Two new two-dimensional (2D) layered materials, namely, MgX2Se4 (X = Al, Ga) monolayers, are predicted to possess novel electronic properties. Ab initio electronic structure calculations show that both MgAl2Se4 and MgGa2Se4 monolayers are direct-gap semiconductors with bandgaps of 3.14 eV and 2.34 eV, respectively. The bandgap of both 2D materials is very sensitive to the in-plane biaxial strain, while the strain induced bandgap changes allow the tuning of optical absorption from the violet to green-light region. Also importantly, the in-plane electron mobility of both 2D materials is predicted to be as high as ∼0.7-1.0 × 103 cm2 V-1 s-1, notably higher than that of the MoS2 sheet (∼200 cm2 V-1 s-1), while it is comparable to that of black phosphorene (∼1000 cm2 V-1 s-1), suggesting their potential application in n-type field-effect transistors. Moreover, suitable bandgap and band-edge alignment make the monolayer MgX2Se4 a potential photocatalyst for water splitting. Lastly, we show that MgX2Se4 possesses a lower monolayer cleavage energy than that of graphite, indicating easy exfoliation of MgX2Se4 layers from their bulk.
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Affiliation(s)
- Pengfei Li
- Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China.
| | - Wei Zhang
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China and Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA.
| | - Changhao Liang
- Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China.
| | - Xiao Cheng Zeng
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA. and Department of Chemical & Biomolecular Engineering and Department of Mechanical & Materials Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA
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17
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Gao X, Zhang H, Fan X, Zhang C, Sun Y, Liu C, Li Z, Jiang S, Man B, Yang C. Toward the highly sensitive SERS detection of bio-molecules: the formation of a 3D self-assembled structure with a uniform GO mesh between Ag nanoparticles and Au nanoparticles. OPTICS EXPRESS 2019; 27:25091-25106. [PMID: 31510388 DOI: 10.1364/oe.27.025091] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
We report a structure to form a hybrid system in which a mesh is sandwiched between Au nanoparticles (AuNPs) and Ag nanoparticles (AgNPs). This self-assembly method uses smaller and denser AgNPs "hot spots" that are spin-coated on a AuNPs@GO mesh nanostructure formed by the reaction of GO@MoS2 and HAuCl4 to form AuNPs@GO mesh@AgNPs SERS substrates. Sub-40-nm mesh and 10-nm gaps ensure the landing sites and spacing of the AgNPs. Consequently, the design integrates the strong plasmonic effects of AgNPs and AuNPs with the biological compatibility of the GO mesh. Crystal violet (CV) as low as 10-15 M can be detected, which confirms the ultrahigh sensitivity of AuNPs@GO mesh@AgNPs. Furthermore, the reproducibility, stability, and finite-difference time-domain (FDTD) simulations confirm the value of this SERS substrate. This material can be used for label-free DNA detection, and the AuNPs@GO mesh@AgNPs substrate facilitated single-molecule DNA detection limits.
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Kim NY, Leem YC, Hong SH, Park JH, Yim SY. Ultrasensitive and Stable Plasmonic Surface-Enhanced Raman Scattering Substrates Covered with Atomically Thin Monolayers: Effect of the Insulating Property. ACS APPLIED MATERIALS & INTERFACES 2019; 11:6363-6373. [PMID: 30663309 DOI: 10.1021/acsami.8b17847] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
We demonstrated the effects of monolayer graphene and hexagonal boron nitride (h-BN) on the stability and detection performance of two types of substrates in surface-enhanced Raman scattering (SERS): a two-dimensional (2D) monolayer/Ag nanoparticle (NP) substrate and a Au NP/2D monolayer/Ag NP substrate. Graphene and h-BN, which have different electrical and chemical properties, were introduced in close contact with the metal NPs and had distinctly different effects on the plasmonic near-field interactions between metal NPs in the subnanometer-scale gap and on the electron transport behavior. A quantitative comparison was possible due to reproducible SERS signals across the entire substrates prepared by simple and inexpensive fabrication methods. The hybrid platform, an insulating h-BN monolayer covering the Ag NP substrate, ensured the long-term oxidative stability for over 80 days, which was superior to the stability achieved using conducting graphene. Additionally, a sandwich structure using an h-BN monolayer exhibited excellent SERS sensitivity with a detection limit for rhodamine 6G as low as 10-12 M; to the best of our knowledge, this is the best SERS detection limit achieved using monolayer h-BN as a gap-control material. In this study, we suggest an efficient strategy for hybridizing the desired 2D layers with metal nanostructures for SERS applications, where the substrate stability and electromagnetic field enhancement are particularly crucial for the various applications that utilize metal/2D hybrid structures.
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Huang Z, Zhang A, Zhang Q, Cui D. Nanomaterial-based SERS sensing technology for biomedical application. J Mater Chem B 2019. [DOI: 10.1039/c9tb00666d] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Over the past few years, nanomaterial-based surface-enhanced Raman scattering (SERS) detection has emerged as a new exciting field in which theoretical and experimental studies of the structure and function of nanomaterials have become a focus.
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Affiliation(s)
- Zhicheng Huang
- Institute of Nano Biomedicine and Engineering
- Department of Instrument Science and Engineering
- Thin Film and Microfabrciation Key Laboratory of Administration of Education
- School of Electronic Information and Electrical Engineering
- Shanghai Jiao Tong University
| | - Amin Zhang
- Institute of Nano Biomedicine and Engineering
- Department of Instrument Science and Engineering
- Thin Film and Microfabrciation Key Laboratory of Administration of Education
- School of Electronic Information and Electrical Engineering
- Shanghai Jiao Tong University
| | - Qian Zhang
- Institute of Nano Biomedicine and Engineering
- Department of Instrument Science and Engineering
- Thin Film and Microfabrciation Key Laboratory of Administration of Education
- School of Electronic Information and Electrical Engineering
- Shanghai Jiao Tong University
| | - Daxiang Cui
- Institute of Nano Biomedicine and Engineering
- Department of Instrument Science and Engineering
- Thin Film and Microfabrciation Key Laboratory of Administration of Education
- School of Electronic Information and Electrical Engineering
- Shanghai Jiao Tong University
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20
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Wang L, He SJ, Wang KY, Luo HH, Hu JG, Yu YQ, Xie C, Wu CY, Luo LB. Dual-plasmonic Au/graphene/Au-enhanced ultrafast, broadband, self-driven silicon Schottky photodetector. NANOTECHNOLOGY 2018; 29:505203. [PMID: 30240364 DOI: 10.1088/1361-6528/aae360] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
High-performance photodetectors are desirable for various applications, including multi-wavelength image sensing, communication, and safety monitoring. In this study, we report the construction of a dual-surface plasmon-enhanced silicon Schottky photodetector using Au nanoparticles (NPs)/graphene/Au NPs hybrid structure as the electrode. It was found that the as-assembled device exhibited broad sensitivity, ranging from ultraviolet to near-infrared light (360-1330 nm) at room temperature, with a high response speed of 360 ns and a 3 dB bandwidth of 780 kHz at zero bias. Further theoretical simulation based on the finite-element method revealed that good device performance is associated with the contribution of the Au NPs/graphene/Au NPs electrode: intense dual-plasmonic resonance coupling is induced in a hybrid structure of two layers of metallic NPs separated by a uniform monolayer graphene. It not only can enhance light trapping and the localized electric field at the resonant and off-resonant wavelength regions, but is also beneficial for the tunneling of hot electrons. This work demonstrated the great potential of dual-plasmonic resonance coupling in optoelectronic devices and will lead to the development of advanced plasmonic devices.
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Affiliation(s)
- Li Wang
- School of Electronic Sciences and Applied Physics and Anhui Provincial Key Laboratory of Advanced Materials and Devices, Hefei University of Technology, Hefei, Anhui 230009, People's Republic of China
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21
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Cai Y, Xu KD. Tunable broadband terahertz absorber based on multilayer graphene-sandwiched plasmonic structure. OPTICS EXPRESS 2018; 26:31693-31705. [PMID: 30650752 DOI: 10.1364/oe.26.031693] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 11/12/2018] [Indexed: 06/09/2023]
Abstract
We numerically demonstrate a tunable broadband terahertz absorber with near-unity absorption by using multilayer graphene ribbons sandwiched in a plasmonic integrated structure. By stacking slightly different widths of graphene ribbons in a sandwiched configuration, the absorption bandwidth can be increased because of the different resonant modes closely positioned together. The absorption spectrum's center frequency can be manipulated by varying the graphene's chemical potential, which provides a flexible way to design and optimize absorption property after fabrication. Furthermore, the structure can tolerate a wide range of incident angles, while the improved structure with graphene nanoparticles also shows polarization-independent feature. In this routine, stacking more graphene ribbons or particles with well-designed dimensions can further increase the bandwidth, as long as the metamaterial dimension satisfies the sub-wavelength condition. Therefore, our research provides an important theoretical guide for designing various graphene-based tunable broadband absorbers at terahertz, infrared, and microwave frequencies. This may have promising applications in imaging, sensing, and novel optoelectronic devices.
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22
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Yang C, Chen Y, Liu D, Chen C, Wang J, Fan Y, Huang S, Lei W. Nanocavity-in-Multiple Nanogap Plasmonic Coupling Effects from Vertical Sandwich-Like Au@Al 2O 3@Au Arrays for Surface-Enhanced Raman Scattering. ACS APPLIED MATERIALS & INTERFACES 2018; 10:8317-8323. [PMID: 29441776 DOI: 10.1021/acsami.7b17228] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The development of ideal three-dimensional (3D) tailorable surface-enhanced Raman scattering (SERS) substrates with the properties of timesaving, large area, high throughput, single or few molecules detection, reproducibility, reusable ability, and high density of "hot spots" has been the mainstream challenge and the robust task. Here, we construct perpendicular sandwich-like Au@Al2O3@Au hybrid nanosheets (PSHNs) on the Al foil as a 3D flexible substrate for SERS. The design of 3D PSHNs incorporates several advantageous aspects for SERS to enhance the performance of plasmonic diamers via bifunctions of vertical Al2O3 nanosheets (NSs) including the nanoscaffold and nanobaffle plate effects. As a nanoscaffold, it increases the space utilization of Au-Au diamers, whereas as a nanobaffle, it forms densely homogeneous Au@Al2O3@Au nanojunctions by sub-4 nm thickness of Al2O3 NSs as the dielectric isolated layer for the double-sided exposure of slitlike surface plasmon resonance. The optimized PSHN substrate exhibits a fascinating SERS sensitivity with an experimental enhancement factor of 1012 and is able to detect rhodamine B at an extremely low concentration up to the limit of single or few molecules (10-18 M), as well as can be recycled without the loss of SERS enhancement via the simple impregnation process. These advantages will greatly facilitate the wider use of SERS in many fields.
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Affiliation(s)
- Chen Yang
- Institute for Frontier Materials , Deakin University , Locked Bag 2000 , Geelong , Victoria 3220 , Australia
| | - Ying Chen
- Institute for Frontier Materials , Deakin University , Locked Bag 2000 , Geelong , Victoria 3220 , Australia
| | - Dan Liu
- Institute for Frontier Materials , Deakin University , Locked Bag 2000 , Geelong , Victoria 3220 , Australia
| | - Cheng Chen
- Institute for Frontier Materials , Deakin University , Locked Bag 2000 , Geelong , Victoria 3220 , Australia
| | - Jiemin Wang
- Institute for Frontier Materials , Deakin University , Locked Bag 2000 , Geelong , Victoria 3220 , Australia
| | - Ye Fan
- Institute for Frontier Materials , Deakin University , Locked Bag 2000 , Geelong , Victoria 3220 , Australia
| | - Shaoming Huang
- Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering , Wenzhou University , Wenzhou 325035 , P. R. China
| | - Weiwei Lei
- Institute for Frontier Materials , Deakin University , Locked Bag 2000 , Geelong , Victoria 3220 , Australia
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Lai H, Xu F, Zhang Y, Wang L. Recent progress on graphene-based substrates for surface-enhanced Raman scattering applications. J Mater Chem B 2018; 6:4008-4028. [DOI: 10.1039/c8tb00902c] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Graphene-based SERS substrates are classified and introduced, and their applications in biosensing-related fields are reviewed.
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Affiliation(s)
- Huasheng Lai
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Fugang Xu
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
| | - Yue Zhang
- School of Chemistry & Chemical Engineering
- Tianjin University of Technology
- Tianjin 300384
- P. R. China
| | - Li Wang
- College of Chemistry and Chemical Engineering
- Jiangxi Normal University
- Nanchang 330022
- P. R. China
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Zhang X, Si S, Zhang X, Wu W, Xiao X, Jiang C. Improved Thermal Stability of Graphene-Veiled Noble Metal Nanoarrays as Recyclable SERS Substrates. ACS APPLIED MATERIALS & INTERFACES 2017; 9:40726-40733. [PMID: 29086549 DOI: 10.1021/acsami.7b13708] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The ability to enhance the heat resistance of noble metals is vital to many industrial and academic applications. Because of its exceptional thermal properties, graphene was used to enhance the thermal stability of noble metals. Monolayer graphene-covered noble metal triangular nanoarrays (TNAs) showed excellent heat resistance, which could maintain their original triangular nanoarrays at high temperatures, whereas bare noble metal TNAs all agglomerate into spherical nanoparticles. On the basis of this mechanism, we obtained a universal recyclable surface-enhanced Raman scattering (SERS) substrate; after 16 cycles, the SERS substrate still worked well. The improvement of the heat resistance of noble metals by graphene has a great significance to the working reliability and service life of electronic devices and the single-use problem of traditional SERS substrates.
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Affiliation(s)
- Xingang Zhang
- Department of Physics and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Hubei Nuclear Solid Physics Key Laboratory and Center for Ion Beam Application and ‡Laboratory of Printable Functional Nanomaterials and Printed Electronics, School of Printing and Packaging, Wuhan University , Wuhan 430072, P. R. China
| | - Shuyao Si
- Department of Physics and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Hubei Nuclear Solid Physics Key Laboratory and Center for Ion Beam Application and ‡Laboratory of Printable Functional Nanomaterials and Printed Electronics, School of Printing and Packaging, Wuhan University , Wuhan 430072, P. R. China
| | - Xiaolei Zhang
- Department of Physics and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Hubei Nuclear Solid Physics Key Laboratory and Center for Ion Beam Application and ‡Laboratory of Printable Functional Nanomaterials and Printed Electronics, School of Printing and Packaging, Wuhan University , Wuhan 430072, P. R. China
| | - Wei Wu
- Department of Physics and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Hubei Nuclear Solid Physics Key Laboratory and Center for Ion Beam Application and ‡Laboratory of Printable Functional Nanomaterials and Printed Electronics, School of Printing and Packaging, Wuhan University , Wuhan 430072, P. R. China
| | - Xiangheng Xiao
- Department of Physics and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Hubei Nuclear Solid Physics Key Laboratory and Center for Ion Beam Application and ‡Laboratory of Printable Functional Nanomaterials and Printed Electronics, School of Printing and Packaging, Wuhan University , Wuhan 430072, P. R. China
| | - Changzhong Jiang
- Department of Physics and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Hubei Nuclear Solid Physics Key Laboratory and Center for Ion Beam Application and ‡Laboratory of Printable Functional Nanomaterials and Printed Electronics, School of Printing and Packaging, Wuhan University , Wuhan 430072, P. R. China
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25
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Kaplas T, Matikainen A, Nuutinen T, Suvanto S, Vahimaa P, Svirko Y. Scalable fabrication of the graphitic substrates for graphene-enhanced Raman spectroscopy. Sci Rep 2017; 7:8561. [PMID: 28819192 PMCID: PMC5561221 DOI: 10.1038/s41598-017-09308-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 07/25/2017] [Indexed: 11/23/2022] Open
Abstract
We propose direct synthesis of ultra-thin graphitic films on a dielectric substrate using sacrificial Ni catalyst layer, which significantly increases the crystallinity of the photoresist pyrolyzed at the temperature of 800 °C and above. A considerable amount of multilayer graphene in the photoresist film pyrolyzed in the presence of the Ni catalyst gives rise to an enhancement of the Raman signal of dye Sudan III molecules deposited on the substrate. We demonstrate comparable enhancement of the Raman signal from Sudan III molecules deposited on the fabricated graphitic substrate and those deposited on graphene, which was conventionally transferred to the silica substrate.
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Affiliation(s)
- Tommi Kaplas
- Institute of Photonics, University of Eastern Finland, FI-80101, Joensuu, Finland.
| | - Antti Matikainen
- Institute of Photonics, University of Eastern Finland, FI-80101, Joensuu, Finland
- Department of Electronics and Nanoengineering, Aalto University, FI-00076, Aalto, Finland
| | - Tarmo Nuutinen
- Institute of Photonics, University of Eastern Finland, FI-80101, Joensuu, Finland
- Department of Environmental and Biological Sciences, University of Eastern Finland, FI-80101, Joensuu, Finland
| | - Sari Suvanto
- Department of Chemistry, University of Eastern Finland, FI-80101, Joensuu, Finland
| | - Pasi Vahimaa
- Institute of Photonics, University of Eastern Finland, FI-80101, Joensuu, Finland
| | - Yuri Svirko
- Institute of Photonics, University of Eastern Finland, FI-80101, Joensuu, Finland
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26
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Zhao Y, Yang D, Li X, Liu Y, Hu X, Zhou D, Lu Y. Toward highly sensitive surface-enhanced Raman scattering: the design of a 3D hybrid system with monolayer graphene sandwiched between silver nanohole arrays and gold nanoparticles. NANOSCALE 2017; 9:1087-1096. [PMID: 27973628 DOI: 10.1039/c6nr06834k] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report a novel graphene-metal hybrid system by introducing monolayer graphene between gold nanoparticles (Au NPs) and silver nanohole (Ag NH) arrays. The design incorporates three key advantages to promote the surface-enhanced Raman scattering (SERS) sensing capacity: (i) making full use of the single-atomic feature of graphene for generating uniform sub-nanometer spaces; (ii) maintaining the bottom layer of Ag nanoarrays with an ordered manner for facilitating the transfer of graphene films and assembly of the top layer of Au NPs; (iii) integrating the advantages of the strong plasmonic effect of Ag, the chemical stability of Au, as well as the mechanical flexibility and biological compatibility of graphene. In this configuration, the plasmonic properties can be fine-tuned by separately optimizing the horizontal or vertical gaps between the metal NPs. Exactly, sub-20 nm spaces between the horizontally patterned Ag tips constructed by adjacent Ag NHs, and sub-nanometer scale graphene gaps between the vertically distributed Au NP-Ag NH have been achieved. Finite element numerical simulations demonstrate that the multi-dimensional plasmonic couplings (including the Au NP-Au NP, Au NP-Ag NH and Ag NH-Ag NH couplings) promote for the hybrid platform an electric field enhancement up to 137 times. Impressively, the as-prepared 3D Au NP-graphene-Ag NH array hybrid structure manifests ultrahigh SERS sensitivity with a detection limit of 10-13 M for R6G molecules, as well as good reproducibility and stability. This work represents a step towards high-performance SERS substrate fabrication, and opens up a new route for graphene-plasmonic hybrids in SERS applications.
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Affiliation(s)
- Yuan Zhao
- School of Physics and Optoelectronic Engineering, Ludong University, Yantai 264025, China. and School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026, China.
| | - Dong Yang
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026, China.
| | - Xiyu Li
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026, China.
| | - Yu Liu
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026, China.
| | - Xiang Hu
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China
| | - Dianfa Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China
| | - Yalin Lu
- School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026, China. and Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei 230026, China and Laser Optics Research Center, Physics Department, United States Air Force Academy, Colorado 80840, USA
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27
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Marin BC, Liu J, Aklile E, Urbina AD, Chiang ASC, Lawrence N, Chen S, Lipomi DJ. SERS-enhanced piezoplasmonic graphene composite for biological and structural strain mapping. NANOSCALE 2017; 9:1292-1298. [PMID: 28055038 PMCID: PMC5266539 DOI: 10.1039/c6nr09005b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Thin-film optical strain sensors have the ability to map small deformations with spatial and temporal resolution and do not require electrical interrogation. This paper describes the use of graphene decorated with metallic nanoislands for sensing of tensile deformations of less than 0.04% with a resolution of less than 0.002%. The nanoisland-graphene composite films contain gaps between the nanoislands, which when functionalized with benzenethiolate behave as hot spots for surface-enhanced Raman scattering (SERS). Mechanical strain increases the sizes of the gaps; this increase attenuates the electric field, and thus attenuates the SERS signal. This compounded, SERS-enhanced "piezoplasmonic" effect can be quantified using a plasmonic gauge factor, and is among the most sensitive mechanical sensors of any type. Since the graphene-nanoisland films are both conductive and optically active, they permit simultaneous electrical stimulation of myoblast cells and optical detection of the strains produced by the cellular contractions.
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Affiliation(s)
- Brandon C Marin
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0448, La Jolla, CA 92093-0448, USA.
| | - Justin Liu
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0448, La Jolla, CA 92093-0448, USA.
| | - Eden Aklile
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0448, La Jolla, CA 92093-0448, USA.
| | - Armando D Urbina
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0448, La Jolla, CA 92093-0448, USA.
| | - Andrew S-C Chiang
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0448, La Jolla, CA 92093-0448, USA.
| | - Natalie Lawrence
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0448, La Jolla, CA 92093-0448, USA.
| | - Shaochen Chen
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0448, La Jolla, CA 92093-0448, USA.
| | - Darren J Lipomi
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, Mail Code 0448, La Jolla, CA 92093-0448, USA.
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28
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Elashnikov R, Mares D, Podzimek T, Švorčík V, Lyutakov O. Sandwiched gold/PNIPAm/gold microstructures for smart plasmonics application: towards the high detection limit and Raman quantitative measurements. Analyst 2017; 142:2974-2981. [DOI: 10.1039/c7an00419b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A smart plasmonic SERS platform, comprising a layer of a stimuli-responsive polymer sandwiched between two gold layers, is reported.
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Affiliation(s)
- R. Elashnikov
- Department of Solid State Engineering
- University of Chemistry and Technology
- 16628 Prague
- Czech Republic
| | - D. Mares
- Department of Microelectronics
- Faculty of Electrical Engineering
- Czech Technical University
- Prague
- Czech Republic
| | - T. Podzimek
- Department of Biochemistry and Microbiology
- University of Chemistry and Technology
- Prague
- Czech Republic
| | - V. Švorčík
- Department of Solid State Engineering
- University of Chemistry and Technology
- 16628 Prague
- Czech Republic
| | - O. Lyutakov
- Department of Solid State Engineering
- University of Chemistry and Technology
- 16628 Prague
- Czech Republic
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29
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Zhao Y, Zhao S, Zhang L, Liu Y, Li X, Lu Y. A three-dimensional Au nanoparticle–monolayer graphene–Ag hexagon nanoarray structure for high-performance surface-enhanced Raman scattering. RSC Adv 2017. [DOI: 10.1039/c6ra27973b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The three-dimensional Au nanoparticle–monolayer graphene–Ag hexagon nanoarray structure exhibits 3107-fold enhancement of the Raman response of graphene and high-performance SERS sensing.
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Affiliation(s)
- Yuan Zhao
- School of Physics and Optoelectronic Engineering
- Ludong University
- Yantai 264025
- China
- School of Chemistry and Materials Science
| | - Shasha Zhao
- The NO.1 Middle School of Hekou
- Dongying 257200
- China
| | - Lichun Zhang
- School of Physics and Optoelectronic Engineering
- Ludong University
- Yantai 264025
- China
| | - Yu Liu
- School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
- China
| | - Xiyu Li
- School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
- China
| | - Yalin Lu
- School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
- China
- Laser Optics Research Center
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30
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Zhao Y, Li X, Zhang L, Chu B, Liu Q, Lu Y. Graphene sandwiched platform for surface-enhanced Raman scattering. RSC Adv 2017. [DOI: 10.1039/c7ra10401d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The gold nanoparticle–monolayer graphene–silver nanoarray sandwich structure exhibits excellent SERS activity of high sensitivity and good reproducibility.
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Affiliation(s)
- Yuan Zhao
- School of Physics and Optoelectronic Engineering
- Ludong University
- Yantai 264025
- China
| | - Xiyu Li
- School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
- China
| | - Lichun Zhang
- School of Physics and Optoelectronic Engineering
- Ludong University
- Yantai 264025
- China
| | - Binhua Chu
- School of Physics and Optoelectronic Engineering
- Ludong University
- Yantai 264025
- China
| | - Qiyi Liu
- School of Food Engineering
- Ludong University
- Yantai 264025
- China
| | - Yalin Lu
- School of Chemistry and Materials Science
- University of Science and Technology of China
- Hefei
- China
- Laser Optics Research Center
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31
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Haghighian N, Bisio F, Miseikis V, Messina GC, De Angelis F, Coletti C, Morgante A, Canepa M. Morphological modulation of graphene-mediated hybridization in plasmonic systems. Phys Chem Chem Phys 2016; 18:27493-27499. [PMID: 27711546 DOI: 10.1039/c6cp05107c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We investigated the plasmonic response of a 2-dimensional ordered array of closely spaced (few-nm apart) Au nanoparticles covered by a large-area single-layer graphene sheet. The array consisted of coherently aligned nanoparticle chains, endowed with a characteristic uniaxial anisotropy. The joint effect of such a morphology and of the very small particle size and spacing led to a corresponding uniaxial wrinkling of graphene in the absence of detectable strain. The deposition of graphene redshifted the Au plasmon-resonance, strongly increased the optical absorption of the array and, most importantly, induced a marked optical anisotropy in the plasmonic response, absent in the pristine nanoparticle array. The experimental observations are accounted for by invoking a graphene-mediated resistive coupling between the Au nanoparticles, where the optical anisotropy arises from the wrinkling-induced anisotropic electron mobility in graphene at optical frequencies.
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Affiliation(s)
- Niloofar Haghighian
- OptMatLab, Dipartimento di Fisica, Università degli Studi di Genova, via Dodecaneso 33, 16146 Genova, Italy
| | | | - Vaidotas Miseikis
- Center for Nanotechnology Innovation@NEST, Istituto Italiano di Tecnologia, Piazza S. Silvestro 12, 56127 Pisa, Italy
| | | | | | - Camilla Coletti
- Center for Nanotechnology Innovation@NEST, Istituto Italiano di Tecnologia, Piazza S. Silvestro 12, 56127 Pisa, Italy and Graphene Labs, Istituto Italiano di Tecnologia, Via Morego 30, 16163 Genova, Italy
| | - Alberto Morgante
- CNR-IOM Laboratorio TASC, Basovizza SS-14, Km 163-5, 34012 Trieste, Italy and Dipartimento di Fisica, Università di Trieste, Trieste, Italy
| | - Maurizio Canepa
- OptMatLab, Dipartimento di Fisica, Università degli Studi di Genova, via Dodecaneso 33, 16146 Genova, Italy
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32
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Park SJ, Kim TY, Park CH, Kim DS. Optical responses of a metal with sub-nm gaps. Sci Rep 2016; 6:22981. [PMID: 26964884 PMCID: PMC4786824 DOI: 10.1038/srep22981] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 02/26/2016] [Indexed: 11/09/2022] Open
Abstract
If the size of a metallic structure is reduced to be comparable to or even smaller than the typical quantum-mechanical lengths such as the Fermi wavelength or Thomas-Fermi wavelength, the electronic structure and optical responses are modulated by quantum effects. Here, we calculate the optical responses of a metal with sub-nm gaps using the eigenstates obtained from an effective-mass quantum theory. According to our simulation, the dielectric responses can be significantly modified by tuning the inter-gap distances. Remarkably, sub-nm gaps occupying a 0.3% volumetric fraction can elongate the penetration depth by an order of magnitude in the terahertz regime. We find that the detailed dependences of electron-photon interaction matrix elements on the involved electronic wavefunctions play an important role in the optical responses. The results draw our attention to these recently fabricated systems.
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Affiliation(s)
- Sang Jun Park
- Center for Theoretical Physics and Department of Physics, Seoul National University, Seoul 08826, Korea
| | - Tae Yun Kim
- Center for Theoretical Physics and Department of Physics, Seoul National University, Seoul 08826, Korea
| | - Cheol-Hwan Park
- Center for Theoretical Physics and Department of Physics, Seoul National University, Seoul 08826, Korea
| | - Dai-Sik Kim
- Center for Atomic Scale Electromagnetism and Department of Physics, Seoul National University, Seoul 08826, Korea
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33
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Banchelli M, Tiribilli B, de Angelis M, Pini R, Caminati G, Matteini P. Controlled Veiling of Silver Nanocubes with Graphene Oxide for Improved Surface-Enhanced Raman Scattering Detection. ACS APPLIED MATERIALS & INTERFACES 2016; 8:2628-34. [PMID: 26751095 DOI: 10.1021/acsami.5b10438] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Hybrid graphene oxide (GO)/metal nanocomposites have been recently proposed as novel surface-enhanced Raman scattering (SERS) substrates. Despite an increasing interest in these systems, standardization in their fabrication process is still lacking but urgently required to support their use for real-life applications. In this work we investigate how the assembly of GO should be conducted to control adsorption geometry and optical properties at the interface with plasmonic nanostructures as monolayer assemblies of silver nanocubes, by tuning main experimental parameters including GO concentration and self-assembly time. We finally identified the experimental conditions for building up a close-fitting soft dressing of the plasmonic surface, which shows optimal characteristics for flexible and reliable SERS detection.
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Affiliation(s)
- Martina Banchelli
- Institute of Applied Physics , National Research Council, via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy
| | - Bruno Tiribilli
- Institute for Complex Systems, National Research Council , via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy
| | - Marella de Angelis
- Institute of Applied Physics , National Research Council, via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy
| | - Roberto Pini
- Institute of Applied Physics , National Research Council, via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy
| | - Gabriella Caminati
- Department of Chemistry "Hugo Schiff" and CSGI, University of Florence , via della Lastruccia 3-13, I-50019 Sesto Fiorentino, Italy
| | - Paolo Matteini
- Institute of Applied Physics , National Research Council, via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy
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34
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Li X, Zhu J, Wei B. Hybrid nanostructures of metal/two-dimensional nanomaterials for plasmon-enhanced applications. Chem Soc Rev 2016; 45:3145-87. [DOI: 10.1039/c6cs00195e] [Citation(s) in RCA: 298] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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35
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Chamoli P, Sharma R, Das MK, Kar KK. Mangifera indica, Ficus religiosa and Polyalthia longifolia leaf extract-assisted green synthesis of graphene for transparent highly conductive film. RSC Adv 2016. [DOI: 10.1039/c6ra19111h] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A green approach to synthesize transparent conducting films of graphene nanosheets by reduction of graphene oxide is presented.
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Affiliation(s)
- Pankaj Chamoli
- Advanced Nanoengineering Materials Laboratory
- Materials Science Programme
- Indian Institute of Technology Kanpur
- Kanpur – 208016
- India
| | - Raghunandan Sharma
- Advanced Nanoengineering Materials Laboratory
- Department of Mechanical Engineering
- Indian Institute of Technology Kanpur
- Kanpur – 208016
- India
| | - Malay K. Das
- Advanced Nanoengineering Materials Laboratory
- Department of Mechanical Engineering
- Indian Institute of Technology Kanpur
- Kanpur – 208016
- India
| | - Kamal K. Kar
- Advanced Nanoengineering Materials Laboratory
- Materials Science Programme
- Indian Institute of Technology Kanpur
- Kanpur – 208016
- India
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36
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Cai Y, Zhu J, Liu QH, Lin T, Zhou J, Ye L, Cai Z. Enhanced spatial near-infrared modulation of graphene-loaded perfect absorbers using plasmonic nanoslits. OPTICS EXPRESS 2015; 23:32318-32328. [PMID: 26699022 DOI: 10.1364/oe.23.032318] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Modulating spatial near-infrared light for ultra-compact electro-optic devices is a critical issue in optical communication and imaging applications. To date, spatial near-infrared modulators based on graphene have been reported, but they showed limited modulation effects due to the relatively weak light-graphene interaction. In combination with graphene and metallic nanoslits, we design a kind of ultrathin near-infrared perfect absorber with enhanced spatial modulation effects and independence on a wide range of incident angles. The modulated spectral shift of central wavelength is up to 258.2 nm in the near-infrared range, which is more promising in applications than state-of-the-art devices. The modulation enhancement is attributed to the plasmonic nanoslit mode, in which the optical electric field is highly concentrated in the deep subwavelength scale and the light-graphene interaction is significantly strengthened. The physical insight is deeply revealed by a combination of equivalent circuit and electromagnetic field analysis. The design principles are not only crucial for spatial near-infrared modulators, but also provide a key guide for developing active near-infrared patch nanoantennas based on graphene.
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37
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Li L, Li P, Lu N, Dai J, Zeng XC. Simulation Evidence of Hexagonal-to-Tetragonal ZnSe Structure Transition: A Monolayer Material with a Wide-Range Tunable Direct Bandgap. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2015; 2:1500290. [PMID: 27774379 PMCID: PMC5061093 DOI: 10.1002/advs.201500290] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 09/18/2015] [Indexed: 05/30/2023]
Abstract
2D material with tunable direct bandgap in the intermediate region (i.e., ≈2-3 eV) is key to the achievement of high efficiency in visible-light optical devices. Herein, a simulation evidence of structure transition of monolayer ZnSe from the experimental pseudohexagonal structure to the tetragonal structure (t-ZnSe) under lateral pressure is shown, suggesting a possible fabrication route to achieve the t-ZnSe monolayer. The as-produced t-ZnSe monolayer exhibits highly tunable bandgap under the biaxial strains, allowing strain engineering of t-ZnSe's bandgap over a wide range of 2-3 eV. Importantly, even under the biaxial strain up to 7%, the t-ZnSe monolayer still keeps its direct-gap property in the desirable range of 2.40-3.17 eV (corresponding to wavelength of green light to ultraviolet). The wide-range tunability of direct bandgap appears to be a unique property of the t-ZnSe monolayer, suggesting its potential application as a light-emitting 2D material in red-green-blue light emission diodes or as complementary light-absorption material in the blue-yellow region for multijunction solar cells. The straddling of the band edge of the t-ZnSe monolayer over the redox potential of water splitting reaction also points to its plausible application for visible-light-driven water splitting.
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Affiliation(s)
- Lei Li
- Department of Chemistry University of Nebraska-Lincoln Lincoln NE 68588 USA
| | - Pengfei Li
- Hefei National Laboratory for Physical Sciences at Microscale and Collaborative Innovation Center of Chemistry for Energy Materials University of Science and Technology of China Hefei Anhui 230026 P.R. China
| | - Ning Lu
- Department of Chemistry University of Nebraska-Lincoln Lincoln NE 68588 USA
| | - Jun Dai
- Department of Chemistry University of Nebraska-Lincoln Lincoln NE 68588 USA
| | - Xiao Cheng Zeng
- Department of Chemistry University of Nebraska-Lincoln Lincoln NE 68588 USA; Hefei National Laboratory for Physical Sciences at Microscale and Collaborative Innovation Center of Chemistry for Energy Materials University of Science and Technology of China Hefei Anhui 230026 P.R. China
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38
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Wu J, Xu Y, Xu P, Pan Z, Chen S, Shen Q, Zhan L, Zhang Y, Ni W. Surface-enhanced Raman scattering from AgNP-graphene-AgNP sandwiched nanostructures. NANOSCALE 2015; 7:17529-17537. [PMID: 26444556 DOI: 10.1039/c5nr04500b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We developed a facile approach toward hybrid AgNP-graphene-AgNP sandwiched structures using self-organized monolayered AgNPs from wet chemical synthesis for the optimized enhancement of the Raman response of monolayer graphene. We demonstrate that the Raman scattering of graphene can be enhanced 530 fold in the hybrid structure. The Raman enhancement is sensitively dependent on the hybrid structure, incident angle, and excitation wavelength. A systematic simulation is performed, which well explains the enhancement mechanism. Our study indicates that the enhancement resulted from the plasmonic coupling between the AgNPs on the opposite sides of graphene. Our approach towards ideal substrates offers great potential to produce a "hot surface" for enhancing the Raman response of two-dimensional materials.
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Affiliation(s)
- Jian Wu
- Department of Physics and Astronomy, Key Laboratory for Laser Plasmas (Ministry of Education), State Key Lab of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong University, Shanghai, 200240, China.
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39
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Zhang X, Shi C, Liu E, Li J, Zhao N, He C. Nitrogen-doped graphene network supported copper nanoparticles encapsulated with graphene shells for surface-enhanced Raman scattering. NANOSCALE 2015; 7:17079-17087. [PMID: 26419953 DOI: 10.1039/c5nr04259c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this study, we demonstrated nitrogen-doped graphene network supported few-layered graphene shell encapsulated Cu nanoparticles (NPs) (Cu@G-NGNs) as a sensing platform, which were constructed by a simple and scalable in situ chemical vapor deposition (CVD) technique with the assistance of a self-assembled three-dimensional (3D) NaCl template. Compared with pure Cu NPs and graphene decorated Cu NPs, the graphene shells can strengthen the plasmonic coupling between graphene and Cu, thereby contributing to an obvious improvement in the local electromagnetic field that was validated by finite element numerical simulations, while the 3D nitrogen-doped graphene walls with a large surface area facilitated molecule adsorption and the doped nitrogen atoms embedded in the graphene lattice can reduce the surface energy of the system. With these merits, a good surface enhanced Raman spectroscopy (SERS) activity of the 3D Cu@G-NGN painting film on glass was demonstrated using rhodamine 6G and crystal violet as model analytes, exhibiting a satisfactory sensitivity, reproducibility and stability. As far as we know, this is the first report on the in situ synthesis of nitrogen-doped graphene/copper nanocomposites and this facile and low-cost Cu-based strategy tends to be a good supplement to Ag and Au based substrates for SERS applications.
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Affiliation(s)
- Xiang Zhang
- School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials, Tianjin University, Tianjin, 300072, P. R. China.
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40
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Abstract
Graphene, a one-atomic-layer-thick planar sheet of sp(2)-bonded carbon configured in a two-dimensional hexagonal lattice, has attracted considerable research interest with regard to sensing-related applications owing to its extraordinary electronic, optical, chemical, and mechanical properties. Graphene plasmonics may be excited in the mid-infrared-to-terahertz regions with high spatial confinement, low loss, and excellent tunability. Meanwhile, graphene can be utilized to tune the plasmonic properties of conventional metallic nanostructures in the visible and near-infrared regions, allowing it to act as a versatile component in various plasmonic applications. This article reviews the recent progress in graphene-based hybrid films used for plasmonic sensing and detection. We particularly emphasize on the unique roles and advantages of graphene in surface-enhanced Raman scattering (SERS) for bare graphene or graphene-metal hybrid films, and plasmonic refractive index (RI) sensing for graphene-metal or graphene-insulator hybrids, among other plasmonic sensing applications. The preparation of graphene-based hybrid films, their functionalization and signal detection techniques are also reviewed. Finally, the perspectives and current challenges in the use of graphene-based hybrid films for plasmonic sensing are outlined.
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Affiliation(s)
- Yuan Zhao
- Key Laboratory of Materials for Energy Conversion, Chinese Academy of Sciences, Department of Materials Science and Engineering, University of Science and Technology of China, 96 Jin Zhai Rd, Hefei, Anhui Province 230026, P. R. China.
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41
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Bahk YM, Kang BJ, Kim YS, Kim JY, Kim WT, Kim TY, Kang T, Rhie J, Han S, Park CH, Rotermund F, Kim DS. Electromagnetic Saturation of Angstrom-Sized Quantum Barriers at Terahertz Frequencies. PHYSICAL REVIEW LETTERS 2015; 115:125501. [PMID: 26431000 DOI: 10.1103/physrevlett.115.125501] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Indexed: 06/05/2023]
Abstract
Metal-graphene-metal hybrid structures allow angstrom-scale van der Waals gaps, across which electron tunneling occurs. We squeeze terahertz electromagnetic waves through these λ/10 000 000 gaps, accompanied by giant field enhancements. Unprecedented transmission reduction of 97% is achieved with the transient voltage across the gap saturating at 5 V. Electron tunneling facilitated by the transient electric field strongly modifies the gap index, starting a self-limiting process related to the barrier height. Our work enables greater interplay between classical optics and quantum tunneling, and provides optical indices to the van der Waals gaps.
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Affiliation(s)
- Young-Mi Bahk
- Department of Physics and Astronomy and Center for Atomic Scale Electromagnetism, Seoul National University, Seoul 151-747, Korea
| | - Bong Joo Kang
- Department of Energy Systems Research and Department of Physics, Ajou University, Suwon 443-749, Korea
| | - Yong Seung Kim
- Graphene Research Institute and Department of Physics, Sejong University, Seoul 143-747, Korea
| | - Joon-Yeon Kim
- Department of Physics and Astronomy and Center for Atomic Scale Electromagnetism, Seoul National University, Seoul 151-747, Korea
| | - Won Tae Kim
- Department of Energy Systems Research and Department of Physics, Ajou University, Suwon 443-749, Korea
| | - Tae Yun Kim
- Department of Physics and Astronomy and Center for Theoretical Physics, Seoul National University, Seoul 151-747, Korea
| | - Taehee Kang
- Department of Physics and Astronomy and Center for Atomic Scale Electromagnetism, Seoul National University, Seoul 151-747, Korea
| | - Jiyeah Rhie
- Department of Physics and Astronomy and Center for Atomic Scale Electromagnetism, Seoul National University, Seoul 151-747, Korea
| | - Sanghoon Han
- Photonic Systems Laboratory, School of EECS, Seoul National University, Seoul 151-744, Korea
| | - Cheol-Hwan Park
- Department of Physics and Astronomy and Center for Theoretical Physics, Seoul National University, Seoul 151-747, Korea
| | - Fabian Rotermund
- Department of Energy Systems Research and Department of Physics, Ajou University, Suwon 443-749, Korea
| | - Dai-Sik Kim
- Department of Physics and Astronomy and Center for Atomic Scale Electromagnetism, Seoul National University, Seoul 151-747, Korea
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42
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Ling X, Huang S, Deng S, Mao N, Kong J, Dresselhaus MS, Zhang J. Lighting up the Raman signal of molecules in the vicinity of graphene related materials. Acc Chem Res 2015; 48:1862-70. [PMID: 26056861 DOI: 10.1021/ar500466u] [Citation(s) in RCA: 124] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Surface enhanced Raman scattering (SERS) is a popular technique to detect the molecules with high selectivity and sensitivity. It has been developed for 40 years, and many reviews have been published to summarize the progress in SERS. Nevertheless, how to make the SERS signals repeatable and quantitative and how to have deeper understanding of the chemical enhancement mechanism are two big challenges. A strategy to target these issues is to develop a Raman enhancement substrate that is flat and nonmetal to replace the conventional rough and metal SERS substrate. At the same time, the newly developed substrate should have a strong interaction with the adsorbate molecules to guarantee strong chemical enhancement. The flatness of the surface allows better control of the molecular distribution and configuration, while the nonmetal surface avoids disturbance of the electromagnetic mechanism. Recently, graphene and other two-dimensional (2D) materials, which have an ideal flat surface and strong chemical interaction with plenty of organic molecules, were developed to be used as Raman enhancement substrates, which can light up the Raman signals of the molecules, and these substrates were demonstrated to be a promising for microspecies or trace species detection. This effect was named "graphene enhanced Raman scattering (GERS)". The GERS technique offers significant advantages for studying molecular vibrations due to the ultraflat and chemically inert 2D surfaces, which are newly available, especially in developing a quantitative and repeatable signal enhancement technique, complementary to SERS. Moreover, GERS is a chemical mechanism dominated effect, which offers a valuable model to study the details of the chemical mechanism. In this Account, we summarize the systematic studies exploring the character of GERS. In addition, as a practical technique, the combination of GERS with a metal substrate incorporates the advantages from both conventional SERS and GERS. The introduction of graphene to the Raman enhancement substrate extended SERS applications in a more controllable and quantitative way. Looking to the future, we expect the combination of the SERS concept with the GERS technology to lead to the solution of some important issues in chemical dynamics and in biological processes monitoring.
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Affiliation(s)
- Xi Ling
- Center
for Nanochemistry, Beijing National Laboratory for Molecular Sciences,
Key Laboratory for the Physics and Chemistry of Nanodevices, State
Key Laboratory for Structural Chemistry of Unstable and Stable Species,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.R. China
- Department
of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Shengxi Huang
- Department
of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Shibin Deng
- Center
for Nanochemistry, Beijing National Laboratory for Molecular Sciences,
Key Laboratory for the Physics and Chemistry of Nanodevices, State
Key Laboratory for Structural Chemistry of Unstable and Stable Species,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.R. China
| | - Nannan Mao
- Center
for Nanochemistry, Beijing National Laboratory for Molecular Sciences,
Key Laboratory for the Physics and Chemistry of Nanodevices, State
Key Laboratory for Structural Chemistry of Unstable and Stable Species,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.R. China
| | - Jing Kong
- Department
of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Mildred S. Dresselhaus
- Department
of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jin Zhang
- Center
for Nanochemistry, Beijing National Laboratory for Molecular Sciences,
Key Laboratory for the Physics and Chemistry of Nanodevices, State
Key Laboratory for Structural Chemistry of Unstable and Stable Species,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.R. China
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43
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Li X, Ren X, Zhang Y, Choy WCH, Wei B. An all-copper plasmonic sandwich system obtained through directly depositing copper NPs on a CVD grown graphene/copper film and its application in SERS. NANOSCALE 2015; 7:11291-11299. [PMID: 25959991 DOI: 10.1039/c5nr00944h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A simple, low-cost, all-copper sandwich system has been obtained through directly depositing Cu nanoparticles (NPs) onto a graphene sheet, which has already been grown on a Cu foil (Cu-NGF). The new design inherits two key advantages: (1) the materials of the NGF coupling system are composed of only cheaper Cu instead of Au and Ag, (2) direct fabrication of the system without transferring graphene will greatly lower the fabrication cost. More importantly, the Cu-NFG system shows a high sensitivity in surface-enhanced Raman scattering (SERS) with the highest enhancement factor (EF, over 1.89 × 10(7)) reported to date in Cu plasmonic systems. Experimental and theoretical results reveal that the strong EF is mainly because of the strong near-field coupling between Cu NPs and Cu films at the optimal angle of incidence, opening up a new route for Cu materials in SERS applications.
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Affiliation(s)
- Xuanhua Li
- State Key Laboratory of Solidification Processing, Center of Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, 710072, P.R. China
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44
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Fateixa S, Nogueira HIS, Trindade T. Hybrid nanostructures for SERS: materials development and chemical detection. Phys Chem Chem Phys 2015; 17:21046-71. [PMID: 25960180 DOI: 10.1039/c5cp01032b] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This review focuses on recent developments in hybrid and nanostructured substrates for SERS (surface-enhanced Raman scattering) studies. Thus substrates composed of at least two distinct types of materials, in which one is a SERS active metal, are considered here aiming at their use as platforms for chemical detection in a variety of contexts. Fundamental aspects related to the SERS effect and plasmonic behaviour of nanometals are briefly introduced. The materials described include polymer nanocomposites containing metal nanoparticles and coupled inorganic nanophases. Chemical approaches to tailor the morphological features of these substrates in order to get high SERS activity are reviewed. Finally, some perspectives for practical applications in the context of chemical detection of analytes using such hybrid platforms are presented.
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Affiliation(s)
- Sara Fateixa
- Department of Chemistry-CICECO University of Aveiro, 3810-193 Aveiro, Portugal.
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45
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Hakonen A, Andersson PO, Stenbæk Schmidt M, Rindzevicius T, Käll M. Explosive and chemical threat detection by surface-enhanced Raman scattering: a review. Anal Chim Acta 2015; 893:1-13. [PMID: 26398417 DOI: 10.1016/j.aca.2015.04.010] [Citation(s) in RCA: 145] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 03/16/2015] [Accepted: 04/03/2015] [Indexed: 01/18/2023]
Abstract
Acts of terror and warfare threats are challenging tasks for defense agencies around the world and of growing importance to security conscious policy makers and the general public. Explosives and chemical warfare agents are two of the major concerns in this context, as illustrated by the recent Boston Marathon bombing and nerve gas attacks on civilians in the Middle East. To prevent such tragic disasters, security personnel must be able to find, identify and deactivate the threats at multiple locations and levels. This involves major technical and practical challenges, such as detection of ultra-low quantities of hazardous compounds at remote locations for anti-terror purposes and monitoring of environmental sanitation of dumped or left behind toxic substances and explosives. Surface-enhanced Raman scattering (SERS) is one of todays most interesting and rapidly developing methods for label-free ultrasensitive vibrational "fingerprinting" of a variety of molecular compounds. Performance highlights include attomolar detection of TNT and DNT explosives, a sensitivity that few, if any, other technique can compete with. Moreover, instrumentation needed for SERS analysis are becoming progressively better, smaller and cheaper, and can today be acquired for a retail price close to 10,000 US$. This contribution aims to give a comprehensive overview of SERS as a technique for detection of explosives and chemical threats. We discuss the prospects of SERS becoming a major tool for convenient in-situ threat identification and we summarize existing SERS detection methods and substrates with particular focus on ultra-sensitive real-time detection. General concepts, detection capabilities and perspectives are discussed in order to guide potential users of the technique for homeland security and anti-warfare purposes.
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Affiliation(s)
- Aron Hakonen
- Division of Bionanophotonics, Department of Applied Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden.
| | - Per Ola Andersson
- Swedish Defense Research Agency FOI, Division of CBRN Defence & Security, SE-90182 Umeå, Sweden
| | - Michael Stenbæk Schmidt
- DTU Nanotech, Technical University of Denmark, Department of Micro- and Nanotechnology, Ørsteds Plads, Building 345 East, 2800 Kgs. Lyngby, Denmark
| | - Tomas Rindzevicius
- DTU Nanotech, Technical University of Denmark, Department of Micro- and Nanotechnology, Ørsteds Plads, Building 345 East, 2800 Kgs. Lyngby, Denmark
| | - Mikael Käll
- Division of Bionanophotonics, Department of Applied Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
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46
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Gong X, Tang J, Ji Y, Wu B, Wu H, Liu A. Adjustable plasmonic optical properties of hollow gold nanospheres monolayers and LSPR-dependent surface-enhanced Raman scattering of hollow gold nanosphere/graphene oxide hybrids. RSC Adv 2015. [DOI: 10.1039/c5ra08057f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Colloidal hollow gold nanospheres with adjustable localized surface plasmon resonance (LSPR) properties were synthesized and self-assembled into HGNs monolayers for investigation of LSPR-dependent surface enhanced Raman scattering (SERS) behavior.
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Affiliation(s)
- Xue Gong
- Center for Optoelectronics Materials and Devices
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Jian Tang
- Center for Optoelectronics Materials and Devices
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Yixin Ji
- Center for Optoelectronics Materials and Devices
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Bingbing Wu
- Key Laboratory of E&M (Zhejiang University of Technology)
- Ministry of Education & Zhejiang Province
- Hangzhou 310014
- China
| | - Huaping Wu
- Key Laboratory of E&M (Zhejiang University of Technology)
- Ministry of Education & Zhejiang Province
- Hangzhou 310014
- China
| | - Aiping Liu
- Center for Optoelectronics Materials and Devices
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
- State Key Lab of Silicon Materials
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47
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Xu J, Wang C, Rong Z, Cheng X, Xiao R. A graphene-interlayered magnetic composite as a multifunctional SERS substrate. RSC Adv 2015. [DOI: 10.1039/c5ra09738j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fe3O4@Ag-rGO-Au composites for efficient SERS detection of different analytes.
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Affiliation(s)
- Jiawen Xu
- College of Optoelectronic Science and Engineering
- National University of Defense Technology
- Changsha 410073
- China
- Beijing Institute of Radiation Medicine
| | - Chongwen Wang
- Beijing Institute of Radiation Medicine
- Beijing 100850
- P. R. China
- College of Life Sciences & Bio-Engineering
- Beijing University of Technology
| | - Zhen Rong
- Beijing Institute of Radiation Medicine
- Beijing 100850
- P. R. China
| | - Xiang'ai Cheng
- College of Optoelectronic Science and Engineering
- National University of Defense Technology
- Changsha 410073
- China
| | - Rui Xiao
- Beijing Institute of Radiation Medicine
- Beijing 100850
- P. R. China
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48
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Zhao Y, Zeng W, Tao Z, Xiong P, Qu Y, Zhu Y. Highly sensitive surface-enhanced Raman scattering based on multi-dimensional plasmonic coupling in Au-graphene-Ag hybrids. Chem Commun (Camb) 2014; 51:866-9. [PMID: 25429404 DOI: 10.1039/c4cc07937j] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report an efficient surface-enhanced Raman scattering (SERS) substrate by utilizing the multi-dimensional plasmonic coupling in Au nanoparticle (NP)-graphene-Ag NP hybrid structures. An ultrasensitive SERS detection with a limit of down to 10(-13) M has been achieved when the sandwiched hybrid film is fabricated on an Ag substrate.
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Affiliation(s)
- Yuan Zhao
- Department of Materials Science and Engineering & CAS Key Laboratory of Materials for Energy Conversion, University of Science and Technology of China, Hefei 230026, China.
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