Reversible adsorption change of 2-amino-4,5-imidazoledicarbonitrile on Ag electrode surfaces by potential-dependent surface-enhanced Raman scattering
SCIE
SCOPUS
- Title
- Reversible adsorption change of 2-amino-4,5-imidazoledicarbonitrile on Ag electrode surfaces by potential-dependent surface-enhanced Raman scattering
- Authors
- Jang, YH; Hwang, S; Cho, K; Lim, M; Joo, T; Choi, S; Kim, J; Joo, SW
- Date Issued
- 2011-03
- Publisher
- WILEY-BLACKWELL
- Abstract
- The potential-induced adsorption change of 2-amino-4,5-imidazoledicarbonitrile (AIDCN) on Ag electrode surfaces has been examined by surface-enhanced Raman scattering (SERS) in an applied potential range between -1.0 and 0.2 V. Upon adsorption, AIDCN has a substantial interaction with the Ag metal surfaces via its two nitrile groups. The CN stretching peaks at similar to 2200 cm(-1) appeared to be more intensified and redshifted at a negative potential. The deconvolution peak analysis of the CN bands at various voltages suggests that there should be a change in binding modes of AIDCN on Ag surfaces. This potential-dependent orientation change appeared to be reversible. The density functional theory (DFT) calculation of AIDCN on Ag cluster atoms is used to explain its potential-dependent adsorption. Copyright (c) 2010 John Wiley & Sons, Ltd.
- Keywords
- adsorption; 2-Amino-4,5-imidazoledicarbonitrile; Ag; potential-dependent SERS; DFT calculation; SILVER NANOPARTICLE SURFACES; SELF-ASSEMBLED MONOLAYERS; DENSITY-FUNCTIONAL THEORY; AU SURFACES; THIN-FILMS; MOLECULAR CALCULATIONS; GOLD SURFACES; ZERO CHARGE; SPECTROSCOPY; SERS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/24947
- DOI
- 10.1002/SIA.3626
- ISSN
- 0142-2421
- Article Type
- Article
- Citation
- SURFACE AND INTERFACE ANALYSIS, vol. 43, no. 3, page. 757 - 762, 2011-03
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