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McCann PC, Hiramatsu K, Goda K. Highly Sensitive Low-Frequency Time-Domain Raman Spectroscopy via Fluorescence Encoding. J Phys Chem Lett 2021; 12:7859-7865. [PMID: 34382803 DOI: 10.1021/acs.jpclett.1c01741] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Fluorescence-encoded vibrational spectroscopy has become increasingly more popular by virtue of its high chemical specificity and sensitivity. However, current fluorescence-encoded vibrational spectroscopy methods lack sensitivity in the low-frequency region, which if addressed could further enhance their capabilities. Here, we present a method for highly sensitive low-frequency fluorescence-encoded vibrational spectroscopy, termed fluorescence-encoded time-domain coherent Raman spectroscopy (FLETCHERS). By first exciting molecules into vibrationally excited states and then promoting the vibrating molecules to electronic states at varying times, the molecular vibrations can be encoded onto the emitted time-domain fluorescence intensity. We demonstrate the sensitive low-frequency detection capability of FLETCHERS by measuring vibrational spectra in the lower fingerprint region of rhodamine 800 solutions as dilute as 250 nM, which is ∼1000 times more sensitive than conventional vibrational spectroscopy. These results, along with further improvement of the method, open up the prospect of performing single-molecule vibrational spectroscopy in the low-frequency region.
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Affiliation(s)
- Phillip C McCann
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan
| | - Kotaro Hiramatsu
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan
- Research Center for Spectrochemistry, The University of Tokyo, Tokyo 113-0033, Japan
- PRESTO, Japan Science and Technology Agency, Saitama 332-0012, Japan
| | - Keisuke Goda
- Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan
- Department of Bioengineering, University of California, Los Angeles, California 90095, United States
- Institute of Technological Sciences, Wuhan University, Wuhan, Hubei 430072, China
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Deng GH, Qian Y, Wei Q, Zhang T, Rao Y. Interface-Specific Two-Dimensional Electronic Sum Frequency Generation Spectroscopy. J Phys Chem Lett 2020; 11:1738-1745. [PMID: 32045523 DOI: 10.1021/acs.jpclett.0c00157] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
High even-order surface/interface specific spectroscopy has the potential to provide more structural and dynamical information about surfaces and interfaces. In this work, we developed a novel fourth-order interface-specific two-dimensional electronic sum frequency generation (2D-ESFG) for structures and dynamics at surfaces and interfaces. A translating wedge-based identical pulses encoding system (TWINs) was introduced to generate phase-locked pulse pairs for coherent pump beams in 2D-ESFG. As a proof-of-principle experiment, fourth-order 2D-ESFG spectroscopy was used to demonstrate couplings of surface states for both n-type and p-type GaAs (100). We found surface dark state within the bandgap of the GaAs in 2D-ESFG spectra, which could not be observed in one-dimensional ESFG spectra. To our best knowledge, this is a first demonstration of interface-specific two-dimensional electronic spectroscopy. The development of the 2D-ESFG spectroscopy will provide new structural probes of spectral diffusion, conformational dynamics, energy transfer, and charge transfer for surfaces and interfaces.
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Affiliation(s)
- Gang-Hua Deng
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
| | - Yuqin Qian
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
| | - Qianshun Wei
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
| | - Tong Zhang
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
| | - Yi Rao
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
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Urashima SH, Myalitsin A, Nihonyanagi S, Tahara T. The Topmost Water Structure at a Charged Silica/Aqueous Interface Revealed by Heterodyne-Detected Vibrational Sum Frequency Generation Spectroscopy. J Phys Chem Lett 2018; 9:4109-4114. [PMID: 29975846 DOI: 10.1021/acs.jpclett.8b01650] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Despite recent significant advances in interface-selective nonlinear spectroscopy, the topmost water structure at a charged silica surface is still not clearly understood. This is because, for charged interfaces, not only interfacial molecules at the topmost layer but also a large number of molecules in the electric double layer are probed even with second-order nonlinear spectroscopy. In the present study, we studied water structure at the negatively charged silica/aqueous interface at pH 12 using heterodyne-detected vibrational sum frequency generation spectroscopy, and demonstrated that the spectral component of the topmost water can be extracted by examining the ionic strength dependence of the Imχ(2) spectrum. The obtained Imχ(2) spectrum indicates that the dominant water species in the topmost layer is hydrogen-bonded to the negatively charged silanolate at the silica surface with one OH group. There also exists minor water species that weakly interacts with the oxygen atom of a siloxane bridge or the remaining silanol at the silica surface, using one OH group. The ionic strength dependence of the Imχ(2) spectrum indicates that this water structure of the topmost layer is unchanged in a wide ionic strength range from 0.01 to 2 M.
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Affiliation(s)
- Shu-Hei Urashima
- Molecular Spectroscopy Laboratory , RIKEN , 2-1 Hirosawa , Wako , Saitama 351-0198 , Japan
| | - Anton Myalitsin
- Molecular Spectroscopy Laboratory , RIKEN , 2-1 Hirosawa , Wako , Saitama 351-0198 , Japan
| | - Satoshi Nihonyanagi
- Molecular Spectroscopy Laboratory , RIKEN , 2-1 Hirosawa , Wako , Saitama 351-0198 , Japan
- Ultrafast Spectroscopy Research Team , RIKEN Center for Advanced Photonics (RAP) , 2-1 Hirosawa , Wako , Saitama 351-0198 , Japan
| | - Tahei Tahara
- Molecular Spectroscopy Laboratory , RIKEN , 2-1 Hirosawa , Wako , Saitama 351-0198 , Japan
- Ultrafast Spectroscopy Research Team , RIKEN Center for Advanced Photonics (RAP) , 2-1 Hirosawa , Wako , Saitama 351-0198 , Japan
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Ma L, Xu S, Wang C, Wang H, Zou S, Su M. Electrically Modulated Localized Surface Plasmon around Self-Assembled-Monolayer-Covered Nanoparticles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:1437-1441. [PMID: 28110535 DOI: 10.1021/acs.langmuir.6b03537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This article reports the observation of electrical modulation of localized surface plasmon around self-assembled monolayer (SAM)-modified gold nanoparticles and the establishment of a new spectroscopy technique, that is, dynamic electro-optical spectroscopy (DEOS). The gold nanoparticles are deposited onto a transparent conductive substrate, and an electrical bias applied on the conductive substrate can cause shift of resonance plasmon response, where the direction of peak shift is related to the polarity of applied bias. The peak shift observed at 2.4 V is approximately ten times larger than those reported in previous work. It is postulated that significant peak shift is the result of reorientation of adsorbed water on electrode, which can change local dielectric environment of nanoparticles. An energy barrier is identified when adsorbed water molecules are turned from oxygen-down to oxygen-up. Frequency-dependent peak shifts on surface-modified gold nanoparticles show that reorientation is a fast reversible process with rich dynamics.
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Affiliation(s)
- Liyuan Ma
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University , Wenzhou, Zhejiang 325001, China
- Wenzhou Institute of Biomaterials and Engineering, CNITECH, CAS , Wenzhou, Zhejiang 325001 China
| | - Shandong Xu
- Department of Chemical Engineering, Northeastern University , Boston, Massachusetts 02115, United States
| | - Chaoming Wang
- Department of Chemistry, University of Central Florida , Orlando, Florida 32826, United States
- Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, School of Mechanics and Engineering, Southwest Jiaotong University , Chengdu, Sichuan 610030, China
| | - Haining Wang
- Department of Chemistry, University of Central Florida , Orlando, Florida 32826, United States
| | - Shengli Zou
- Department of Chemistry, University of Central Florida , Orlando, Florida 32826, United States
| | - Ming Su
- School of Ophthalmology and Optometry, Eye Hospital, School of Biomedical Engineering, Wenzhou Medical University , Wenzhou, Zhejiang 325001, China
- Wenzhou Institute of Biomaterials and Engineering, CNITECH, CAS , Wenzhou, Zhejiang 325001 China
- Department of Chemical Engineering, Northeastern University , Boston, Massachusetts 02115, United States
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Nomoto T, Fujio K, Sasahara A, Okajima H, Koide N, Katayama H, Onishi H. Phonon mode of TiO2 coupled with the electron transfer from N3 dye. J Chem Phys 2014; 138:224704. [PMID: 23781812 DOI: 10.1063/1.4807850] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Low frequency vibrational spectra of submonolayer N3 dye (Ru(4,4(')-dicarboxy-2,2(')-bipyridine)2(NCS)2) adsorbed on TiO2 (110) were reported by using fourth-order coherent Raman spectroscopy, which is interface-sensitive vibrational spectroscopy. Most of the peaks observed in the experiment were at the same frequency as that of Raman and infrared spectra of the dye and TiO2. Two interfacial modes at 640 and 100 cm(-1) and one resonantly enhanced phonon at 146 cm(-1) appeared in addition to the pure TiO2 and N3 spectra. Adsorption of N3 dye on TiO2 contributed to the enhancement of 100 and 146 cm(-1) mode. The results not only reported interfacial low-frequency vibrations of TiO2 (110) with N3 dye adsorption but also suggested the coupling between the surface vibrations of TiO2 and charge transfer between N3 dye and TiO2 on the surface.
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Affiliation(s)
- Tomonori Nomoto
- Molecular Photoscience Research Center, Kobe University, Nada, Kobe 657-8501, Japan.
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Nihonyanagi S, Mondal JA, Yamaguchi S, Tahara T. Structure and Dynamics of Interfacial Water Studied by Heterodyne-Detected Vibrational Sum-Frequency Generation. Annu Rev Phys Chem 2013; 64:579-603. [DOI: 10.1146/annurev-physchem-040412-110138] [Citation(s) in RCA: 215] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Jahur A. Mondal
- Molecular Spectroscopy Laboratory, RIKEN, Wako, Saitama 351-0198, Japan;
| | - Shoichi Yamaguchi
- Molecular Spectroscopy Laboratory, RIKEN, Wako, Saitama 351-0198, Japan;
| | - Tahei Tahara
- Molecular Spectroscopy Laboratory, RIKEN, Wako, Saitama 351-0198, Japan;
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Sen S. “Half-hydration” at the air/water interface revealed by heterodyne-detected electronic sum frequency generation spectroscopy, polarization second harmonic generation, and molecular dynamics simulation. J Chem Phys 2010; 132:144701. [DOI: 10.1063/1.3372620] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Sen P, Yamaguchi S, Tahara T. Ultrafast dynamics of malachite green at the air/water interface studied by femtosecond time-resolved electronic sum frequency generation (TR-ESFG): an indicator for local viscosity. Faraday Discuss 2010. [DOI: 10.1039/b908097j] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Lee JH, Ihee H. Advantages of time-resolved difference X-ray solution scattering curves in analyzing solute molecular structure. Struct Chem 2009. [DOI: 10.1007/s11224-009-9521-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Optically excited near-surface phonons of TiO2 (110) observed by fourth-order coherent Raman spectroscopy. J Chem Phys 2009; 131:084703. [DOI: 10.1063/1.3207947] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
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Sen S, Yamaguchi S, Tahara T. Different Molecules Experience Different Polarities at the Air/Water Interface. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200901094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Sen S, Yamaguchi S, Tahara T. Different Molecules Experience Different Polarities at the Air/Water Interface. Angew Chem Int Ed Engl 2009; 48:6439-42. [DOI: 10.1002/anie.200901094] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Nomoto T, Onishi H. Fourth-order coherent Raman spectroscopy of liquid-solid interfaces: near-surface phonons of TiO2 (110) in liquids. APPLIED SPECTROSCOPY 2009; 63:941-946. [PMID: 19678993 DOI: 10.1366/000370209788964395] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The fourth-order coherent Raman response of a TiO2 (110) surface covered by HCl aqueous solution, neat octanol, acetic acid, or carbon tetrachloride layers is acquired. Four fourth-order optical responses were identified at 837-826, 452-448, 371-362, and 184-183 cm(-1) and assigned to near-surface phonons of TiO2. A third-order response produced in the bulk liquid layer was superimposed on the fourth-order response, when coherent vibrations are efficiently excited in the layer.
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Affiliation(s)
- Tomonori Nomoto
- Molecular Photoscience Research Center, Kobe University, Rokkodai, Nada, Kobe, 657-8501, Japan.
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