Single-Molecule Level Rare Events Revealed by Dynamic Surface-Enhanced Raman Spectroscopy.
Single-Molecule Level Rare Events Revealed by Dynamic Surface-Enhanced Raman Spectroscopy.
复制标题
动态表面增强拉曼光谱揭示单分子水平罕见事件。
DOI:
10.1021/acs.analchem.0c02936
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发表时间:
2020-11
影响因子:
7.4
通讯作者:
Ren Bin
中科院分区:
文献类型:
--
作者:
Zong Cheng;Chen Chan-Juan;Wang Xiang;Hu Pei;Liu Guo-Kun;Ren Bin
Surface-enhanced Raman spectroscopy (SERS) is a powerful tool to monitor various interfacial behaviors providing molecular level information with high spatial and temporal resolutions. However, it is a challenge to obtain SERS spectra with high quality for analytes having a weak binding affinity with plasmonic nanostructures due to the short dwell time of the analyte on the surface. Here, we employed dynamic SERS, an acquisition method consisting of the rapid acquisition of a series of consecutive SERS spectra, to study the adsorption/desorption behavior of R6G on Ag surfaces. We demonstrated that the signal-noise ratio of SERS spectra of mobile molecules can be improved by dynamic SERS even when the acquisition time cannot catch up with the diffusion time of the molecule. More interestingly, we captured the neutral R6G0 state (spectroscopically different from the dominated positive R6G+ state) of R6G at the single-molecule level, which is a rare molecule event hardly detectable by traditional SERS. Dynamic SERS provides near real-time molecular vibrational information with an improved signal-noise ratio, which opens a new avenue to capture metastable or rare molecule events for the comprehensive understanding of interfacial processes related to catalysis and life science.
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影响因子:
3.7
作者:
B. Scott;K. Carron
通讯作者:
B. Scott;K. Carron
DOI:
10.1002/cphc.200400395
发表时间:
2005-01
期刊:
Chemphyschem : a European journal of chemical physics and physical chemistry
影响因子:
--
作者:
T. Vosgröne;A. Meixner
通讯作者:
T. Vosgröne;A. Meixner
影响因子:
--
作者:
LEE, PC;MEISEL, D
通讯作者:
MEISEL, D
影响因子:
15
作者:
Michaels, AM;Nirmal, M;Brus, LE
通讯作者:
Brus, LE
影响因子:
3.3
作者:
Watanabe, H;Hayazawa, N;Kawata, S
通讯作者:
Kawata, S