201
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Itoh T, Yamamoto YS. Recent topics on single-molecule fluctuation analysis using blinking in surface-enhanced resonance Raman scattering: clarification by the electromagnetic mechanism. Analyst 2016; 141:5000-9. [DOI: 10.1039/c6an00936k] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Fluctuating single sp2carbon clusters at single hotspots of silver nanoparticle dimers investigated by surface-enhanced Raman scattering (SERS), indicating that SERS has become an ultrasensitive tool for clarifying molecular functions on plasmonic metal nanoparticles (NPs).
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Affiliation(s)
- Tamitake Itoh
- Nano-Bioanalysis Research Group
- Health Research Institute
- National Institute of Advanced Industrial Science and Technology (AIST)
- Takamatsu
- Japan
| | - Yuko S. Yamamoto
- Research Fellow of the Japan Society for the Promotion of Science
- Chiyoda
- Japan
- Department of Advanced Materials Sciences
- Faculty of Engineering
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202
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Wang Y, Zhao B, Ozaki Y. Exploring the Effect of Intermolecular Hydrogen Bonding and the Application in Label-Free Enantioselective Discrimination by SERS. ACS SYMPOSIUM SERIES 2016. [DOI: 10.1021/bk-2016-1245.ch006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yue Wang
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, P. R. China
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan
| | - Bing Zhao
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, P. R. China
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan
| | - Yukihiro Ozaki
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, P. R. China
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan
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203
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López-Carballeira D, Ramos-Berdullas N, Pérez-Juste I, Mandado M. Can single graphene nanodisks be used as Raman enhancement platforms? RSC Adv 2016. [DOI: 10.1039/c6ra12349j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Small nanographene structures are promising for the development of SERS platforms at the frontier of nanometer and subnanometer scales.
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Affiliation(s)
| | | | | | - Marcos Mandado
- Department of Physical Chemistry
- University of Vigo
- 36310 Vigo
- Spain
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204
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Liang X, Liang B, Pan Z, Lang X, Zhang Y, Wang G, Yin P, Guo L. Tuning plasmonic and chemical enhancement for SERS detection on graphene-based Au hybrids. NANOSCALE 2015; 7:20188-20196. [PMID: 26575834 DOI: 10.1039/c5nr06010a] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Various graphene-based Au nanocomposites have been developed as surface-enhanced Raman scattering (SERS) substrates recently. However, efficient use of SERS has been impeded by the difficulty of tuning SERS enhancement effects induced from chemical and plasmonic enhancement by different preparation methods of graphene. Herein, we developed graphene-based Au hybrids through physical sputtering gold NPs on monolayer graphene prepared by chemical vapor deposition (CVD) as a CVD-G/Au hybrid, as well as graphene oxide-gold (GO/Au) and reduced-graphene oxide (rGO/Au) hybrids prepared using the chemical in situ crystallization growth method. Plasmonic and chemical enhancements were tuned effectively by simple methods in these as-prepared graphene-based Au systems. SERS performances of CVD-G/Au, rGO/Au and GO/Au showed a gradually monotonic increasing tendency of enhancement factors (EFs) for adsorbed Rhodamine 6G (R6G) molecules, which show clear dependence on chemical bonds between graphene and Au, indicating that the chemical enhancement can be steadily controlled by chemical groups in a graphene-based Au hybrid system. Most notably, we demonstrate that the optimized GO/Au was able to detect biomolecules of adenine, which displayed high sensitivity with a detection limit of 10(-7) M as well as good reproducibility and uniformity.
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Affiliation(s)
- Xiu Liang
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191, China.
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205
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Ma J, Wang Z, Wang LW. Interplay between plasmon and single-particle excitations in a metal nanocluster. Nat Commun 2015; 6:10107. [PMID: 26673449 PMCID: PMC4703846 DOI: 10.1038/ncomms10107] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 11/02/2015] [Indexed: 12/03/2022] Open
Abstract
Plasmon-generated hot carriers are used in photovoltaic or photochemical applications. However, the interplays between the plasmon and single-particle excitations in nanosystems have not been theoretically addressed using ab initio methods. Here we show such interplays in a Ag55 nanocluster using real-time time-dependent density functional theory simulations. We find that the disappearance of the zero-frequency peak in the Fourier transform of the band-to-band transition coefficient is a hallmark of the plasmon. We show the importance of the d-states for hot-carrier generations. If the single-particle d-to-s excitations are resonant to the plasmon frequency, the majority of the plasmon energy will be converted into hot carriers, and the overall hot-carrier generation is enhanced by the plasmon; if such resonance does not exist, we observe an intriguing Rabi oscillation between the plasmon and hot carriers. Phonons play a minor role in plasmonic dynamics in such small systems. This study provides guidance on improving plasmonic applications. Plasmons can enhance hot-carrier generation for efficient photochemical reactions, but the interplay between plasmons and single-particle excitations are difficult to capture in models. Here, the authors use real-time time-dependent density functional theory to study these interactions in silver nanocrystals.
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Affiliation(s)
- Jie Ma
- Joint Center for Artificial Photosynthesis and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Zhi Wang
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Lin-Wang Wang
- Joint Center for Artificial Photosynthesis and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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206
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Hsu KC, Chen DH. Highly Sensitive, Uniform, and Reusable Surface-Enhanced Raman Scattering Substrate with TiO₂ Interlayer between Ag Nanoparticles and Reduced Graphene Oxide. ACS APPLIED MATERIALS & INTERFACES 2015; 7:27571-27579. [PMID: 26587760 DOI: 10.1021/acsami.5b08792] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
TiO2 nanoparticles and Ag nanoparticles were successively deposited on reduced graphene oxide (rGO) by a two-step solvothermal process to develop a reusable surface-enhanced Raman scattering (SERS) substrate with high sensitivity and uniformity owing to the 2-dimensional planar structure of rGO, the photocatalytic activity of TiO2, and the SERS function of Ag nanoparticles. The presence of TiO2 interlayer efficiently diminished the interference from the Raman intensities of D-band and G-band of rGO and hence enhanced the sensitivity significantly. As compared to Ag/rGO nanocomposite, the detection limit of 4-aminothiophenol (4-ATP) for Ag/TiO2/rGO nanocomposite could be lowered from 10(-10) to 10(-14) M, and its enhancement factor could be raised from 1.27 × 10(10) to 3.46 × 10(12). Meanwhile, good uniformity remained, the relative standard deviation (RSD) value was about 10%. Furthermore, by UV irradiation in water, the photocatalytic property of TiO2 could eliminate the Raman signal of 4-ATP efficiently and made this substrate reusable. After being reused five times, its excellent SERS performance was still retained. Thus, the Ag/TiO2/rGO nanocomposite developed in this work was a promising SERS substrate with good reusability and high sensitivity and uniformity.
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Affiliation(s)
- Kai-Chih Hsu
- Department of Chemical Engineering National Cheng Kung University , Tainan, Taiwan 701, Republic of China
| | - Dong-Hwang Chen
- Department of Chemical Engineering National Cheng Kung University , Tainan, Taiwan 701, Republic of China
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207
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Lin J, Liang L, Ling X, Zhang S, Mao N, Zhang N, Sumpter BG, Meunier V, Tong L, Zhang J. Enhanced Raman Scattering on In-Plane Anisotropic Layered Materials. J Am Chem Soc 2015; 137:15511-7. [DOI: 10.1021/jacs.5b10144] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jingjing Lin
- 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, PR China
| | - Liangbo Liang
- Center
for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Department
of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Xi Ling
- Department
of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Shuqing 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, PR 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, PR China
| | - Na 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, PR China
| | - Bobby G. Sumpter
- Center
for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
- Computer Science & Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Vincent Meunier
- Department
of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
| | - Lianming Tong
- 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, PR China
| | - 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, PR China
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208
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Langelüddecke L, Singh P, Deckert V. Exploring the Nanoscale: Fifteen Years of Tip-Enhanced Raman Spectroscopy. APPLIED SPECTROSCOPY 2015; 69:1357-71. [PMID: 26554759 DOI: 10.1366/15-08014] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Spectroscopic methods with high spatial resolution are essential to understand the physical and chemical properties of nanoscale materials including biological and chemical materials. Tip-enhanced Raman spectroscopy (TERS) is a combination of surface-enhanced Raman spectroscopy (SERS) and scanning probe microscopy (SPM), which can provide high-resolution topographic and spectral information simultaneously below the diffraction limit of light. Even examples of sub-nanometer resolution have been demonstrated. This review intends to give an introduction to TERS, focusing on its basic principle and the experimental setup, the strengths followed by recent applications, developments, and perspectives in this field.
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Affiliation(s)
- Lucas Langelüddecke
- Institute of Physical Chemistry and Abbe Center of Photonics, University of Jena, Helmholtzweg 4, D-07743 Jena, Germany
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209
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210
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Gong ZY, Tian G, Duan S, Luo Y. Significant Contributions of the Albrecht’s A Term to Nonresonant Raman Scattering Processes. J Chem Theory Comput 2015; 11:5385-90. [DOI: 10.1021/acs.jctc.5b00761] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zu-Yong Gong
- Hefei
National Laboratory for Physical Science at the Microscale, Department
of Chemical Physics, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026 Anhui, People’s Republic of China
- Department
of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden
| | - Guangjun Tian
- Department
of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden
| | - Sai Duan
- Department
of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden
| | - Yi Luo
- Hefei
National Laboratory for Physical Science at the Microscale, Department
of Chemical Physics, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026 Anhui, People’s Republic of China
- Department
of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden
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211
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Lane LA, Qian X, Nie S. SERS Nanoparticles in Medicine: From Label-Free Detection to Spectroscopic Tagging. Chem Rev 2015; 115:10489-529. [DOI: 10.1021/acs.chemrev.5b00265] [Citation(s) in RCA: 607] [Impact Index Per Article: 67.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Lucas A. Lane
- Departments
of Biomedical Engineering and Chemistry, Emory University and Georgia Institute of Technology, Health Sciences Research Building,
Room E116, 1760 Haygood Drive, Atlanta, Georgia 30322, United States
| | - Ximei Qian
- Departments
of Biomedical Engineering and Chemistry, Emory University and Georgia Institute of Technology, Health Sciences Research Building,
Room E116, 1760 Haygood Drive, Atlanta, Georgia 30322, United States
| | - Shuming Nie
- Departments
of Biomedical Engineering and Chemistry, Emory University and Georgia Institute of Technology, Health Sciences Research Building,
Room E116, 1760 Haygood Drive, Atlanta, Georgia 30322, United States
- College
of Engineering and Applied Sciences, Nanjing University, 22 Hankou
Road, Nanjing, Jiangsu Province 210093, China
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212
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Affiliation(s)
- Xuan Yang
- The
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | | | - Bo Pang
- The
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | | | - Younan Xia
- The
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
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213
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Fihey A, Le Guennic B, Jacquemin D. Toward an Enhancement of the Photoactivity of Multiphotochromic Dimers Using Plasmon Resonance: A Theoretical Study. J Phys Chem Lett 2015; 6:3067-3073. [PMID: 26267018 DOI: 10.1021/acs.jpclett.5b01333] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Building dimers of organic photochromic compounds paves the way to multifunctional switches, but such architectures often undergo partial photoreactivity only. Combining photochromism of molecules and plasmon resonance of gold nanoparticles (NPs) is known to affect the photochromism of monomers, yet the impact on multimers remains unknown. Here we propose a theoretical study of dimers of dithienylethenes by the mean of a hybrid calculation scheme (discrete-interaction model/quantum mechanics). We aim to assess how the optical properties of multiphotochromes are tuned by the influence of the plasmon resonances. We show that, for a typical chemisorption orientation on the NP, the absorption bands responsible for the photochromism are significantly enhanced for both the doubly open and mixed closed-open isomers of the dyad, hinting that plasmon resonance could be used to boost the generally poor photoactivity of dithienylethene dyads.
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Affiliation(s)
- Arnaud Fihey
- †Chimie Et Interdisciplinarité, Synthèse, Analyse, Modélisation (CEISAM), UMR CNRS no. 6230, BP 92208, Université de Nantes, 2, Rue de la Houssinière, 44322 Nantes, Cedex 3, France
| | - Boris Le Guennic
- ‡Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, 263 Avenue du Général Leclerc, 35042 Rennes Cedex, France
| | - Denis Jacquemin
- †Chimie Et Interdisciplinarité, Synthèse, Analyse, Modélisation (CEISAM), UMR CNRS no. 6230, BP 92208, Université de Nantes, 2, Rue de la Houssinière, 44322 Nantes, Cedex 3, France
- §Institut Universitaire de France, 103, Boulevard Saint-Michel, F-75005 Paris Cedex 05, France
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214
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Jalani G, Cerruti M. Nano graphene oxide-wrapped gold nanostars as ultrasensitive and stable SERS nanoprobes. NANOSCALE 2015; 7:9990-7. [PMID: 25981393 DOI: 10.1039/c4nr07473d] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
We report a facile method to synthesize highly branched gold nanostars wrapped with nano graphene oxide (nGO) sheets with or without the addition of Raman dyes, as nanoprobes with high SERS activity. Both cysteamine and nGO are added to gold nanostars; the positively charged amino groups help self-assembly of nGO flakes around the nanostars. This increases the Raman signal of nGO by 5.3 folds compared to samples in which nGO is in contact with the nanostars but does not wrap them. We also prepare dye-based SERS nanoprobes by sandwiching a typical Raman reporter such as Rhodamine B (RhB), Crystal Violet (CV) and Rhodamine 6G (R6G) between the nanostars and the nGO coating. The Raman signals of RhB are 5.2 times larger when sandwiched between nGO and nanostars than if the molecules are just adsorbed on the nanostar surface, and similar enhancements are observed for the other dyes. In addition to improving SERS efficiency, the wrapping greatly improves the stability of the dye-based nanoprobes, showing a reproducible Raman signal of RhB for over a week in simulated body fluids at 37 °C. High SERS signal, facile fabrication method and excellent stability make these nanoprobes highly promising for SERS-based biosensing and bioimaging applications.
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Affiliation(s)
- Ghulam Jalani
- Department of Mining and Materials Engineering, McGill University, Montreal, QC H3A 0C5, Canada.
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215
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Wang AX, Kong X. Review of Recent Progress of Plasmonic Materials and Nano-Structures for Surface-Enhanced Raman Scattering. MATERIALS (BASEL, SWITZERLAND) 2015; 8:3024-3052. [PMID: 26900428 PMCID: PMC4758820 DOI: 10.3390/ma8063024] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 05/20/2015] [Indexed: 01/20/2023]
Abstract
Surface-enhanced Raman scattering (SERS) has demonstrated single-molecule sensitivity and is becoming intensively investigated due to its significant potential in chemical and biomedical applications. SERS sensing is highly dependent on the substrate, where excitation of the localized surface plasmons (LSPs) enhances the Raman scattering signals of proximate analyte molecules. This paper reviews research progress of SERS substrates based on both plasmonic materials and nano-photonic structures. We first discuss basic plasmonic materials, such as metallic nanoparticles and nano-rods prepared by conventional bottom-up chemical synthesis processes. Then, we review rationally-designed plasmonic nano-structures created by top-down approaches or fine-controlled synthesis with high-density hot-spots to provide large SERS enhancement factors (EFs). Finally, we discuss the research progress of hybrid SERS substrates through the integration of plasmonic nano-structures with other nano-photonic devices, such as photonic crystals, bio-enabled nanomaterials, guided-wave systems, micro-fluidics and graphene.
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Affiliation(s)
- Alan X. Wang
- School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, OR 97331, USA
| | - Xianming Kong
- Department of Forest Products Technology, School of Chemical Technology, Aalto University, P.O. Box 16300, FI-00076 Aalto, Finland; E-Mail:
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216
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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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217
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Revisiting the mechanism and the influence of the excitation wavelength on the surface-enhanced Raman scattering of the pyridine–Ag20 system. Theor Chem Acc 2015. [DOI: 10.1007/s00214-015-1661-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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218
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Madison LR, Ratner MA, Schatz GC. Understanding the Electronic Structure Properties of Bare Silver Clusters as Models for Plasmonic Excitation. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/978-3-319-14397-2_3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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219
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Nanoparticle properties and synthesis effects on surface-enhanced Raman scattering enhancement factor: an introduction. ScientificWorldJournal 2015; 2015:124582. [PMID: 25884017 PMCID: PMC4390178 DOI: 10.1155/2015/124582] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 11/01/2014] [Accepted: 11/02/2014] [Indexed: 01/05/2023] Open
Abstract
Raman spectroscopy has enabled researchers to map the specific chemical makeup of surfaces, solutions, and even cells. However, the inherent insensitivity of the technique makes it difficult to use and statistically complicated. When Raman active molecules are near gold or silver nanoparticles, the Raman intensity is significantly amplified. This phenomenon is referred to as surface-enhanced Raman spectroscopy (SERS). The extent of SERS enhancement is due to a variety of factors such as nanoparticle size, shape, material, and configuration. The choice of Raman reporters and protective coatings will also influence SERS enhancement. This review provides an introduction to how these factors influence signal enhancement and how to optimize them during synthesis of SERS nanoparticles.
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220
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Lee N, Schuck PJ, Nico PS, Gilbert B. Surface Enhanced Raman Spectroscopy of Organic Molecules on Magnetite (Fe3O4) Nanoparticles. J Phys Chem Lett 2015; 6:970-974. [PMID: 26262854 DOI: 10.1021/acs.jpclett.5b00036] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Surface-enhanced Raman spectroscopy (SERS) of species bound to environmentally relevant oxide nanoparticles is largely limited to organic molecules structurally related to catechol that facilitate a chemical enhancement of the Raman signal. Here, we report that magnetite (Fe3O4) nanoparticles provide a SERS signal from oxalic acid and cysteine via an electric field enhancement. Magnetite thus likely provides an oxide substrate for SERS study of any adsorbed organic molecule. This substrate combines benefits from both metal-based and chemical SERS by providing an oxide surface for studies of environmentally and catalytically relevant detailed chemical bonding information with fewer restrictions of molecular structure or binding mechanisms. Therefore, the magnetite-based SERS demonstrated here provides a new approach to establishing the surface interactions of environmentally relevant organic ligands and mineral surfaces.
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Affiliation(s)
- Namhey Lee
- †Earth Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - P James Schuck
- ‡Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 91125, United States
| | - Peter S Nico
- †Earth Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Benjamin Gilbert
- †Earth Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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221
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Gao Y, Chen L, Dai X, Song R, Wang B, Wang Z. A strong charge-transfer effect in surface-enhanced Raman scattering induced by valence electrons of actinide elements. RSC Adv 2015. [DOI: 10.1039/c5ra03408f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The 6d electrons of Ac atom involved in excited transitions induce a strong CT-SERS enhancement which can be tuned by changing the conformation of pyridine-Ac@Au7 complexes.
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Affiliation(s)
- Yang Gao
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
| | - Lei Chen
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
| | - Xing Dai
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
| | - Ruixia Song
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
| | - Bo Wang
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
| | - Zhigang Wang
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun
- China
- Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy (Jilin University)
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222
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Lu YH, Liou JY, Lin CF, Sun YS. Electrocatalytic activity of a nitrogen-enriched mesoporous carbon framework and its hybrids with metal nanoparticles fabricated through the pyrolysis of block copolymers. RSC Adv 2015. [DOI: 10.1039/c5ra22528k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Small metal NPs at NEMCF exhibit a four-electron transfer pathway, a large kinetic current density and a small onset potential.
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Affiliation(s)
- Yen-Hsing Lu
- Department of Chemical and Materials Engineering
- National Central University
- Taoyuan 32001
- Taiwan
| | - Jiun-You Liou
- Department of Chemical and Materials Engineering
- National Central University
- Taoyuan 32001
- Taiwan
| | - Chien-Fu Lin
- Department of Chemical and Materials Engineering
- National Central University
- Taoyuan 32001
- Taiwan
| | - Ya-Sen Sun
- Department of Chemical and Materials Engineering
- National Central University
- Taoyuan 32001
- Taiwan
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223
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Latorre F, Guthmuller J, Marquetand P. A spectroscopic study of the cis/trans-isomers of penta-2,4-dienoic acid attached to gold nanoclusters. Phys Chem Chem Phys 2015; 17:7648-58. [DOI: 10.1039/c4cp05280c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We simulate how one can spectroscopically discriminate between cis/trans isomers of a molecular switch attached to gold nanoclusters.
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Affiliation(s)
- Federico Latorre
- Institute of Physical Chemistry
- University of Jena
- 07743 Jena
- Germany
- Institute of Theoretical Chemistry
| | - Julien Guthmuller
- Faculty of Applied Physics and Mathematics
- Gdansk University of Technology
- 80233 Gdansk
- Poland
| | - Philipp Marquetand
- Institute of Theoretical Chemistry
- University of Vienna
- 1090 Vienna
- Austria
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224
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Grasseschi D, Ando RA, Toma HE, Zamarion VM. Unraveling the nature of Turkevich gold nanoparticles: the unexpected role of the dicarboxyketone species. RSC Adv 2015. [DOI: 10.1039/c4ra12161a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
In this paper we show how surface coordination chemistry can elucidate one of the reproducibility issues related to the classical synthesis of gold nanoparticles by the Turkevich method.
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Affiliation(s)
| | - Rômulo A. Ando
- Instituto de Química
- Universidade de São Paulo
- São Paulo
- Brazil
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225
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Moskovits M. The case for plasmon-derived hot carrier devices. NATURE NANOTECHNOLOGY 2015; 10:6-8. [PMID: 25559962 DOI: 10.1038/nnano.2014.280] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Affiliation(s)
- Martin Moskovits
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, USA
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226
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Sanchéz-Lozano M, Mandado M, Pérez-Juste I, Hermida-Ramón JM. Theoretical vibrational Raman and surface-enhanced Raman scattering spectra of water interacting with silver clusters. Chemphyschem 2014; 15:4067-76. [PMID: 25263101 DOI: 10.1002/cphc.201402454] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Indexed: 11/11/2022]
Abstract
In this study, we analyzed the Raman spectrum of a water molecule adsorbed on a cluster of 20 silver atoms, and the plasmonic electromagnetic effect of the silver surface was also considered to give a theoretical prediction of the surface-enhanced Raman scattering spectrum. The calculations were performed at the density functional theory (DFT) level by using both frozen and unfrozen silver clusters. Two different models were used to consider the plasmonic enhancement; one of them was a modified classical (dipole) model and the other was the coupled perturbed Hartree-Fock method with excitation frequencies obtained from time-dependent DFT calculations and with proper detuning of these frequencies. The importance of small geometrical distortions of the silver surface in the orientation of the adsorbed water was shown. Moreover, it was shown how the symmetry of the transition dipole moment and the symmetry of the vibrational modes influence the Raman intensities of the SERS spectrum.
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Affiliation(s)
- Marta Sanchéz-Lozano
- Departamento de Química Física, Facultade de Química, Universidade de Vigo, Campus Lagoas Marcosende s/n, 36310 Vigo (Spain)
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227
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Haidar I, Lau-Truong S, Aubard J, Renault JP, Félidj N, Maurel F, Boubekeur-Lecaque L. Oxadiazole-2-thiol adsorption on gold nanorods: a joint theoretical and experimental study by using SERS, XPS, and DFT. Chemphyschem 2014; 15:3646-54. [PMID: 25157617 DOI: 10.1002/cphc.201402197] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Indexed: 11/07/2022]
Abstract
The chemisorption of 1,3,4-oxadiazole-2-thiol (ODT) on gold nanorods has been investigated by using surface-enhanced Raman spectroscopy (SERS) and density functional theory (DFT). Although most of the SERS spectra have remarkable similarity to the normal Raman spectra of the pure analyte, the adsorption of ODT on a gold surface leads to a drastic change in its Raman spectrum and distinct vibrational features are obtained with gold nanorods and spherical nanoparticles. Simulated Raman spectra for hybrid systems that consist of an oxadiazole moiety coordinated to a Au20 gold cluster provided valuable information about the coordination mode and enabled us to assign vibration modes.
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Affiliation(s)
- Israa Haidar
- Université Paris Diderot, Sorbonne Paris Cité, ITODYS, UMR CNRS 7086, 15 rue Jean-Antoine de Baïf, 75205 Paris Cedex 13 (France), Tel: (+33) 1-57-27-87-72
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228
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Guidez EB, Aikens CM. Quantum mechanical origin of the plasmon: from molecular systems to nanoparticles. NANOSCALE 2014; 6:11512-27. [PMID: 25163494 DOI: 10.1039/c4nr02225d] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The surface plasmon resonance (SPR) of noble metal nanoparticles is reviewed in terms of both classical and quantum mechanical approaches. The collective oscillation of the free electrons responsible for the plasmon is well described using classical electromagnetic theory for large systems (from about 10 to 100 nm). In cases where quantum effects are important, this theory fails and first principle approaches like time-dependent density functional theory (TDDFT) must be used. In this paper, we give an account of the current understanding of the quantum mechanical origin of plasmon resonances. We provide some insight into how the discrete absorption spectrum of small noble metal clusters evolves into a strong plasmon peak with increasing particle size. The collective character of the plasmon is described in terms of the constructive addition of single-particle excitations. As the system size increases, the number of single-particle excitations increases as well. A configuration interaction (CI) approach can be applied to describe the optical properties of particles of all shapes and sizes, providing a consistent definition of plasmon resonances. Finally, we expand our analysis to thiolate-protected nanoparticles and analyze the effects of ligands on the plasmon.
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Affiliation(s)
- Emilie B Guidez
- Department of Chemistry, Kansas State University, 213 CBC Building, Manhattan, KS 66506, USA.
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229
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Iida K, Noda M, Nobusada K. Theoretical approach for optical response in electrochemical systems: Application to electrode potential dependence of surface-enhanced Raman scattering. J Chem Phys 2014; 141:124124. [DOI: 10.1063/1.4896537] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Kenji Iida
- Department of Theoretical and Computational Molecular Science, Institute for Molecular Science, Okazaki 444-8585, Japan
| | - Masashi Noda
- Department of Theoretical and Computational Molecular Science, Institute for Molecular Science, Okazaki 444-8585, Japan
| | - Katsuyuki Nobusada
- Department of Theoretical and Computational Molecular Science, Institute for Molecular Science, Okazaki 444-8585, Japan
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230
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Sakko A, Rossi TP, Nieminen RM. Dynamical coupling of plasmons and molecular excitations by hybrid quantum/classical calculations: time-domain approach. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2014; 26:315013. [PMID: 25028486 DOI: 10.1088/0953-8984/26/28/315013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The presence of plasmonic material influences the optical properties of nearby molecules in untrivial ways due to the dynamical plasmon-molecule coupling. We combine quantum and classical calculation schemes to study this phenomenon in a hybrid system that consists of a Na(2) molecule located in the gap between two Au/Ag nanoparticles. The molecule is treated quantum-mechanically with time-dependent density-functional theory, and the nanoparticles with quasistatic classical electrodynamics. The nanoparticle dimer has a plasmon resonance in the visible part of the electromagnetic spectrum, and the Na(2) molecule has an electron-hole excitation in the same energy range. Due to the dynamical interaction of the two subsystems the plasmon and the molecular excitations couple, creating a hybridized molecular-plasmon excited state. This state has unique properties that yield e.g. enhanced photoabsorption compared to the freestanding Na(2) molecule. The computational approach used enables decoupling of the mutual plasmon-molecule interaction, and our analysis verifies that it is not legitimate to neglect the back coupling effect when describing the dynamical interaction between plasmonic material and nearby molecules. Time-resolved analysis shows nearly instantaneous formation of the coupled state, and provides an intuitive picture of the underlying physics.
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231
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Wang L, Shen A, Li X, Zeng Y, Zhou X, Richards RM, Hu J. Inclusion of guest materials in aqueous coordination network shells spontaneously generated by reacting 2,5-dimercapto-1,3,4-thiadiazole with nanoscale metallic silver. RSC Adv 2014. [DOI: 10.1039/c4ra07281b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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232
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Tan T, Tian C, Ren Z, Yang J, Chen Y, Sun L, Li Z, Wu A, Yin J, Fu H. LSPR-dependent SERS performance of silver nanoplates with highly stable and broad tunable LSPRs prepared through an improved seed-mediated strategy. Phys Chem Chem Phys 2014; 15:21034-42. [PMID: 24223426 DOI: 10.1039/c3cp52236a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The application of the silver plates as a proper substrate for surface enhanced Raman spectroscopy (SERS) was performed to give deep insight on LSPR-dependent SERS performance. Firstly, an improved seed-mediated method is developed to synthesize silver nanoplates (NP) with broad-tuning localized surface plasmon resonance (LSPR) and high stability. The LSPR peaks could be tuned in the range from 485 to ∼1200 nm by controlling the experimental parameters. With the treatment of sodium dodecyl sulfate (SDS), silver NPs exhibit high stability for SERS tests. The LSPR-dependent SERS study was performed by taking four typical silver NPs with LSPR peaks at 485 nm, 614 nm, 906 nm and 1130 nm as substrates. Also, two probe molecules, 4-amino-thiophenol (4-ATP) and rhodamine-6G (R-6G), were used, and both the 458 nm and 633 nm lasers were selected as excitation for the LSPR-dependent SERS study. Our results indicated that the SERS performance is largely dependent on the LSPR of the silver NP substrate at a given excitation wavelength. Specifically, the Raman signals were greatly enhanced when the laser excitation line matched (close to the LSPR band) the peak position of LSPR band. When at the excitation of 633 nm, two orders of magnitude stronger SERS signals would be observed for the Ag-614 substrate than that of the Ag-485 and Ag-1130 substrates with their LSPR peak positions far away from 633 nm. The same result can also be observed when the laser excitation at 458 nm was selected for the Ag-485 substrate. Our study gives a deep insight into LSPR-dependent SERS performance. It also gives a method for giving large SERS enhancement just by selecting a proper excitation wavelength matched to the LSPR of the substrate.
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Affiliation(s)
- Taixing Tan
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, P. R. China.
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233
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Chen H, Luo J, Zeng T, Jiang L, Sun Y, Jiao Z, Jin Y, Sun X. Investigation of the synthesis, SERS performance and application in glucose sensing of hierarchical 3D silver nanostructures. NEW J CHEM 2014. [DOI: 10.1039/c3nj01603j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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234
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Chulhai DV, Jensen L. Simulating Surface-Enhanced Raman Optical Activity Using Atomistic Electrodynamics-Quantum Mechanical Models. J Phys Chem A 2014; 118:9069-79. [DOI: 10.1021/jp502107f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Dhabih V. Chulhai
- Department
of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park 16802, United States
| | - Lasse Jensen
- Department
of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park 16802, United States
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235
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Kauczor J, Norman P. Efficient Calculations of Molecular Linear Response Properties for Spectral Regions. J Chem Theory Comput 2014; 10:2449-55. [DOI: 10.1021/ct500114m] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Joanna Kauczor
- Department of Physics, Chemistry
and Biology, Linköping University, SE-581 83 Linköping, Sweden
| | - Patrick Norman
- Department of Physics, Chemistry
and Biology, Linköping University, SE-581 83 Linköping, Sweden
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236
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Dalfovo MC, Lacconi GI, Moreno M, Yappert MC, Sumanasekera GU, Salvarezza RC, Ibañez FJ. Synergy between graphene and Au nanoparticles (heterojunction) towards quenching, improving Raman signal, and UV light sensing. ACS APPLIED MATERIALS & INTERFACES 2014; 6:6384-6391. [PMID: 24749787 DOI: 10.1021/am405753t] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Here, we developed a simple method for obtaining a heterojunction composed of graphene (G) and surfactant-coated Au nanoparticles (NPs) to measure film conductivity and surface enhanced Raman scattering (SERS). Monolayer G is obtained by chemical vapor deposition (CVD) and transferred via poly(methyl methacrylate) (PMMA) to microfabricated Au electrodes, glass, and silicon. Post-synthesis treatments of G with PMMA and ozone (O3) showed 1 and 6 orders of magnitude decrease in film conductivity, respectively. The heterojunction formation with Au NPs had no major effect on G conductivity. In this work is demonstrated that G quenches more than 90% of the combined photoluminescence and fluorescence of Au NPs and Rhodamine B (RhB), respectively. Signal quenching permitted quantitative analysis of SERS of RhB on various substrates including as-transferred graphene, oxidized graphene (OG), and the heterojunction. While G is mainly responsible for quenching photoluminescence and fluorescence, ∼3 orders of magnitude increase SERS activity for RhB was accomplished by the heterojunction. Finally, we wanted to correlate changes in film current during UV light sensing experiments. We found striking differences in the sensing profiles at different UV energies.
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Affiliation(s)
- María C Dalfovo
- Instituto de Investigaciones Fisicoquímicas, Teóricas y Aplicadas (INIFTA), Universidad Nacional de La Plata, CONICET , Sucursal 4 Casilla de Correo 16, 1900 La Plata, Argentina
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237
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Gao SM, Wang HY, Lin YX. Surface-enhanced Raman Scattering of Aflatoxin B1 on Silver by DFT Method. CHINESE J CHEM PHYS 2014. [DOI: 10.1063/1674-0068/27/02/131-136] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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238
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Schlücker S. Oberflächenverstärkte Raman-Spektroskopie: Konzepte und chemische Anwendungen. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201205748] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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239
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Schlücker S. Surface-Enhanced Raman Spectroscopy: Concepts and Chemical Applications. Angew Chem Int Ed Engl 2014; 53:4756-95. [DOI: 10.1002/anie.201205748] [Citation(s) in RCA: 1634] [Impact Index Per Article: 163.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Revised: 11/03/2012] [Indexed: 01/10/2023]
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240
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Kuhlman AK, Zayak AT. Revealing Interaction of Organic Adsorbates with Semiconductor Surfaces Using Chemically Enhanced Raman. J Phys Chem Lett 2014; 5:964-968. [PMID: 26270974 DOI: 10.1021/jz500024x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Surface enhanced Raman spectroscopy (SERS) is frequently associated with "chemical enhancement" (CE), which is an effect of the chemical coupling between reporting molecules and surfaces. While SERS technique is mainly attributed to the studies of metallic surfaces, chemical coupling must be present on semiconductor surfaces as well. Here, we examine binding of trans-1,2-two(4-pyridyl) ethylene (BPE) to various crystallographic facets of PbSe semiconductor. The calculated off-resonant Raman spectra vary significantly on different crystallographic facets of PbSe, correlating with the electronic structure of each type of semiconductor surface. We distinguish situations when the charge transfer is present and when it is not, which raises the question about what exactly should be called the "chemical enhancement". We attempt to clarify this situation by introducing the concept of the "charge-transfer" and "charge-transfer-less" chemical enhancement. We also demonstrate a transition between these two regimes, which exhibits a nonlinear behavior of the vibrational coupling and a significantly stronger contribution to the Raman intensity.
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Affiliation(s)
- Andrew K Kuhlman
- Department of Physics and Astronomy, Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | - Alexey T Zayak
- Department of Physics and Astronomy, Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States
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241
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Long R, Prezhdo OV. Instantaneous Generation of Charge-Separated State on TiO2 Surface Sensitized with Plasmonic Nanoparticles. J Am Chem Soc 2014; 136:4343-54. [DOI: 10.1021/ja5001592] [Citation(s) in RCA: 185] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Run Long
- School of Physics and Complex & Adaptive Systems Laboratory, University College Dublin, Dublin, Ireland
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
| | - Oleg V Prezhdo
- Department
of Chemistry, University of Rochester, Rochester, New York 14627, United States
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242
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White AJ, Tretiak S, Galperin M. Raman scattering in molecular junctions: a pseudoparticle formulation. NANO LETTERS 2014; 14:699-703. [PMID: 24447295 DOI: 10.1021/nl4039532] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We present a formulation of Raman spectroscopy in molecular junctions based on a many-body state representation of the molecule. The approach goes beyond the previous effective single orbital formalism and provides a convenient way to incorporate computational methods and tools proven for equilibrium molecular spectroscopy into the realm of current carrying junctions. The presented framework is illustrated by first principle simulations of Raman response in a three-ring oligophenylene vinylene terminating in amine functional groups (OPV3) junction. The calculated shift in Stokes lines and estimate of vibrational heating by electric current agree with available experimental data. In particular, our results suggest that participation of the OPV3 cation in Raman scattering under bias may be responsible for the observed shift, and that the direction of the shift depends on renormalization of normal modes. This work is a step toward atomistic quantum ab initio modeling of the optical response of nonequilibrium electronic dynamics in molecular junctions.
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Affiliation(s)
- Alexander J White
- Department of Chemistry and Biochemistry, University of California San Diego , La Jolla, California 92093, United States
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243
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Payton JL, Morton SM, Moore JE, Jensen L. A hybrid atomistic electrodynamics-quantum mechanical approach for simulating surface-enhanced Raman scattering. Acc Chem Res 2014; 47:88-99. [PMID: 23965411 DOI: 10.1021/ar400075r] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Surface-enhanced Raman scattering (SERS) is a technique that has broad implications for biological and chemical sensing applications by providing the ability to simultaneously detect and identify a single molecule. The Raman scattering of molecules adsorbed on metal nanoparticles can be enhanced by many orders of magnitude. These enhancements stem from a twofold mechanism: an electromagnetic mechanism (EM), which is due to the enhanced local field near the metal surface, and a chemical mechanism (CM), which is due to the adsorbate specific interactions between the metal surface and the molecules. The local field near the metal surface can be significantly enhanced due to the plasmon excitation, and therefore chemists generally accept that the EM provides the majority of the enhancements. While classical electrodynamics simulations can accurately simulate the local electric field around metal nanoparticles, they offer few insights into the spectral changes that occur in SERS. First-principles simulations can directly predict the Raman spectrum but are limited to small metal clusters and therefore are often used for understanding the CM. Thus, there is a need for developing new methods that bridge the electrodynamics simulations of the metal nanoparticle and the first-principles simulations of the molecule to facilitate direct simulations of SERS spectra. In this Account, we discuss our recent work on developing a hybrid atomistic electrodynamics-quantum mechanical approach to simulate SERS. This hybrid method is called the discrete interaction model/quantum mechanics (DIM/QM) method and consists of an atomistic electrodynamics model of the metal nanoparticle and a time-dependent density functional theory (TDDFT) description of the molecule. In contrast to most previous work, the DIM/QM method enables us to retain a detailed atomistic structure of the nanoparticle and provides a natural bridge between the electronic structure methods and the macroscopic electrodynamics description. Using the DIM/QM method, we have examined in detail the importance of the local environment on molecular excitation energies, enhanced molecular absorption, and SERS. Our results show that the molecular properties are strongly dependent not only on the distance of the molecule from the metal nanoparticle but also on its orientation relative to the nanoparticle and the specific local environment. Using DIM/QM to simulate SERS, we show that there is a significant dependence on the adsorption site. Furthermore, we present a detailed comparison between enhancements obtained from DIM/QM simulations and those from classical electrodynamics simulations of the local field. While we find qualitative agreement, there are significant differences due to the neglect of specific molecule-metal interactions in the classical electrodynamics simulations. Our results highlight the importance of explicitly considering the specific local environment in simulations of molecule-plasmon coupling.
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Affiliation(s)
- John L. Payton
- Department of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, United States
| | - Seth M. Morton
- Department of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, United States
| | - Justin E. Moore
- Department of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, United States
| | - Lasse Jensen
- Department of Chemistry, The Pennsylvania State University, 104 Chemistry Building, University Park, Pennsylvania 16802, United States
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244
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Chen L, Gao Y, Xu H, Wang Z, Li Z, Zhang RQ. The mechanism of N–Ag bonding determined tunability of surface-enhanced Raman scattering of pyridine on MAg (M = Cu, Ag, Au) diatomic clusters. Phys Chem Chem Phys 2014; 16:20665-71. [DOI: 10.1039/c4cp03205e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
SERS spectra of the AuAg–Py complex: (a) an IE-enhanced spectrum at an incident wavelength of 369 nm, and (b) a CT-enhanced spectrum at an incident wavelength of 470 nm.
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Affiliation(s)
- Lei Chen
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education
- College of Life Sciences
- Jilin University
- Changchun, China
- Institute of Atomic and Molecular Physics
| | - Yang Gao
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012, China
| | - Haoran Xu
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education
- College of Life Sciences
- Jilin University
- Changchun, China
| | - Zhigang Wang
- Institute of Atomic and Molecular Physics
- Jilin University
- Changchun 130012, China
- State Key Laboratory of Theoretical and Computational Chemistry
- Jilin University
| | - Zhengqiang Li
- Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education
- College of Life Sciences
- Jilin University
- Changchun, China
| | - Rui-Qin Zhang
- Department of Physics and Materials Science and Centre for Functional Photonics (CFP)
- City University of Hong Kong
- Hong Kong SAR, China
- Beijing Computational Science Research Center
- Beijing 100084, P. R. China
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245
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Hsu KC, Chen DH. Microwave-assisted green synthesis of Ag/reduced graphene oxide nanocomposite as a surface-enhanced Raman scattering substrate with high uniformity. NANOSCALE RESEARCH LETTERS 2014; 9:193. [PMID: 24808800 PMCID: PMC4005903 DOI: 10.1186/1556-276x-9-193] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 04/17/2014] [Indexed: 05/23/2023]
Abstract
A nanocomposite of silver nanoparticles/reduced graphene oxide (Ag/rGO) has been fabricated as a surface-enhanced Raman scattering (SERS) substrate owing to the large surface area and two-dimensional nanosheet structure of rGO. A facile and rapid microwave-assisted green route has been used for the formation of Ag nanoparticles and the reduction of graphene oxide simultaneously with L-arginine as the reducing agent. By increasing the cycle number of microwave irradiation from 1 and 4 to 8, the mean diameters of Ag nanoparticles deposited on the surface of rGO increased from 10.3 ± 4.6 and 21.4 ± 10.5 to 41.1 ± 12.6 nm. The SERS performance of Ag/rGO nanocomposite was examined using the common Raman reporter molecule 4-aminothiophenol (4-ATP). It was found that the Raman intensity of 4-ATP could be significantly enhanced by increasing the size and content of silver nanoparticles deposited on rGO. Although the Raman intensities of D-band and G-band of rGO were also enhanced simultaneously by the deposited Ag nanoparticles which limited the further improvement of SERS detection sensitivity, the detectable concentration of 4-ATP with Ag/rGO nanocomposite as the SERS substrate still could be lowered to be 10(-10) M and the enhancement factor could be increased to 1.27 × 10(10). Furthermore, it was also achievable to lower the relative standard deviation (RSD) values of the Raman intensities to below 5%. This revealed that the Ag/rGO nanocomposite obtained in this work could be used as a SERS substrate with high sensitivity and homogeneity.
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Affiliation(s)
- Kai-Chih Hsu
- Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan
| | - Dong-Hwang Chen
- Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan
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246
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Ceja-Fdez A, López-Luke T, Torres-Castro A, Wheeler DA, Zhang JZ, De la Rosa E. Glucose detection using SERS with multi-branched gold nanostructures in aqueous medium. RSC Adv 2014. [DOI: 10.1039/c4ra11055b] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Gold nanoparticles (AuNPs), multi-branched gold nanoparticles (MBGNs), and silica-coated MBGNs (MBGNs-silica) were studied for rhodamine B (RB) and α-glucose Raman detection at low concentration in water.
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Affiliation(s)
| | | | | | - Damon. A. Wheeler
- Department of Chemistry and Chemical Biology
- University of California
- Merced, USA
| | - Jin Z. Zhang
- Department of Chemistry and Biochemistry
- University of California
- Santa Cruz, USA
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247
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Kurouski D, Postiglione T, Deckert-Gaudig T, Deckert V, Lednev IK. Amide I vibrational mode suppression in surface (SERS) and tip (TERS) enhanced Raman spectra of protein specimens. Analyst 2013; 138:1665-73. [PMID: 23330149 DOI: 10.1039/c2an36478f] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Surface- and tip-enhanced Raman spectroscopy (SERS and TERS) are modern spectroscopic techniques, which are becoming widely used and show a great potential for the structural characterisation of biological systems. Strong enhancement of the Raman signal through localised surface plasmon resonance enables chemical detection at the single-molecule scale. Enhanced Raman spectra collected from biological specimens, such as peptides, proteins or microorganisms, were often observed to lack the amide I band, which is commonly used as a marker for the interpretation of the secondary protein structure. The cause of this phenomenon was unclear for many decades. In this work, we investigated this phenomenon for native insulin and insulin fibrils using both TERS and SERS and compared these spectra to the spectra of well-defined homo peptides. The results indicate that the appearance of the amide I Raman band does not correlate with the protein aggregation state, but is instead determined by the size of the amino acid side chain. For short model peptides, the absence of the amide I band in TERS and SERS spectra correlates with the presence of a bulky side chain. Homo-glycine and -alanine, which are peptides with small side chain groups (H and CH(3), respectively), exhibited an intense amide I band in almost 100% of the acquired spectra. Peptides with bulky side chains, such as tyrosine and tryptophan, exhibited the amide I band in 70% and 31% of the acquired spectra, respectively.
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Affiliation(s)
- Dmitry Kurouski
- University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, USA
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248
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Mertens J, Eiden AL, Sigle DO, Huang F, Lombardo A, Sun Z, Sundaram RS, Colli A, Tserkezis C, Aizpurua J, Milana S, Ferrari AC, Baumberg JJ. Controlling subnanometer gaps in plasmonic dimers using graphene. NANO LETTERS 2013; 13:5033-8. [PMID: 24059599 DOI: 10.1021/nl4018463] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Graphene is used as the thinnest possible spacer between gold nanoparticles and a gold substrate. This creates a robust, repeatable, and stable subnanometer gap for massive plasmonic field enhancements. White light spectroscopy of single 80 nm gold nanoparticles reveals plasmonic coupling between the particle and its image within the gold substrate. While for a single graphene layer, spectral doublets from coupled dimer modes are observed shifted into the near-infrared, these disappear for increasing numbers of layers. These doublets arise from charger-transfer-sensitive gap plasmons, allowing optical measurement to access out-of-plane conductivity in such layered systems. Gating the graphene can thus directly produce plasmon tuning.
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Affiliation(s)
- Jan Mertens
- NanoPhotonics Centre, Cavendish Laboratory, University of Cambridge , Cambridge, CB3 0HE, United Kingdom
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249
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El-Khoury PZ, Bylaska EJ, Hess WP. Time domain simulations of chemical bonding effects in surface-enhanced spectroscopy. J Chem Phys 2013; 139:174303. [DOI: 10.1063/1.4827455] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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250
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Driscoll AJ, Harpster MH, Johnson PA. The development of surface-enhanced Raman scattering as a detection modality for portable in vitro diagnostics: progress and challenges. Phys Chem Chem Phys 2013; 15:20415-33. [PMID: 24177331 DOI: 10.1039/c3cp52334a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This perspective provides an overview of the diverse surface-enhanced Raman scattering (SERS)-based sensor platforms that have been developed for in vitro diagnostic applications. To provide focus, protein and nucleic acid detection assays based on the principle of extrinsic SERS sensing are emphasized, as well as their potential for translation to fully integrated point-of-care (POC) test platforms. The development of intrinsic SERS sensors, which are predicated on the direct detection of analytes by laser excitation, entails unique opportunities and challenges deserving of their own attention. As the robust sensing of disease pathogens and cancers in both clinical facilities and limited resource settings is the targeted objective of many next-generation biosensors, the majority of the research progress summarized here centers on SERS sensors developed for the rapid, sensitive and selective detection of disease-causing pathogens and biomarkers. In our effort to communicate a realistic assessment of the progress that has been made and the challenges that lie ahead, we avoid an overtly optimistic appraisal of the current status of SERS diagnostics that does not tacitly acknowledge the difficulties inherent in aligning SERS-based technologies alongside ELISA and PCR technologies as a complementary method for bioanalyte detection possessing unique advantages.
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Affiliation(s)
- Ashley J Driscoll
- Department of Chemical and Petroleum Engineering, University of Wyoming, Laramie, WY 82071, USA.
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