Abstract
Cytosine adsorbed on a roughened gold electrode has been investigated by using electrochemical cyclic voltammetry and surface-enhanced Raman spectroscopy (SERS). The results indicate that cytosine was adsorbed on the Au electrode in a perpendicular orientation via the N3 position. As the maximum enhancement of ring breathing mode appears at negative potentials compared with other modes, both the electromagnetic enhancement and the charge transfer mechanism were considered to contribute to the SERS intensity. The binding interaction between cytosine and the gold electrode was weakened when the potential was negatively moved. The result also indicates that the SERS technique can be used to characterize adsorptions of bio-molecules at electrochemical interfaces.
Keywords
Cytosine, Cyclic voltammetry, Gold electrode, Surface-enhanced Raman spectra (SERS)
Publication Date
2005-08-28
Online Available Date
2005-08-28
Revised Date
2005-08-28
Received Date
2005-08-28
Recommended Citation
Yuan-Fei WU, Jian-Feng LI, De-Yin WU, Bin REN, Zhong-Qun TIAN.
Surface-enhanced Raman Spectra of Cytosine Adsorbed on a Roughened Gold Electrode[J]. Journal of Electrochemistry,
2005
,
11(3): 304-307.
DOI: 10.61558/2993-074X.1658
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol11/iss3/12
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