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Corresponding Author

Xiu-e JIANG(jiangxiue@ciac.ac.cn)

Abstract

Surface-enhanced infrared absorption spectroscopy (SEIRAS), especially in attenuated total reflectance (ATR) mode, taking advantages of surface-enhancement and near-field optical effect of enhancing substrate, is a ultra-sensitive infrared spectroscopy, which could achieve surface-selected detection at a sub-monolayer level. Since the enhancing substrate could simultaneously serve as a working electrode, ATR-SEIRAS is a readily surface-sensitive in situ label-free spectroelectrochemistry technique. With the advantages of small influence from metal species on enhancement effect, good potential reversibility of spectra, simple surface selection rule and sensitivity to polar molecules, ATR-SEIRAS has been widely applied in the fields of orientation analysis and species identification of interfacial adsorbed molecules, interfacial catalytic reaction mechanism elucidation, and interfacial molecular interaction study. In recent years, ATR-SEIRAS has been demonstrated to be a powerful tool in biomolecule analysis, and great progress has been made. Therefore, this review briefly introduces the basic principle and basic technical characteristics of SEIRAS, and then emphasizes the application and development of ATR-SEIRAS in protein structure-function study, artificial biomimetic membrane research, whole cell analysis, as well as electrocatalytic interface probing, through discussing several representative research works. Finally, some perspectives for future development of SEIRAS are discussed.

Graphical Abstract

Keywords

spectroelectrochemistry, surface-enhanced infrared absorption spectroscopy, infrared ctroelectrochemistry, bioanalysis

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Publication Date

2019-04-28

Online Available Date

2019-03-01

Revised Date

2019-01-03

Received Date

2018-12-14

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