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Citation: Shen He-Bai, Zhou Wen-Jun, Yang Hai-Feng, Yu Pei-Tao. Change of Adsorption State of Oli deoxynucleotides on the Silver Electrode Surface with Change of Potential[J]. Acta Physico-Chimica Sinica, ;2002, 18(06): 490-494. doi: 10.3866/PKU.WHXB20020603 shu

Change of Adsorption State of Oli deoxynucleotides on the Silver Electrode Surface with Change of Potential

1.
Chemistry Department of Life and Environmental Science College, Shanghai Normal University, Shanghai　200234

Received Date: 16 October 2001
Available Online: 15 June 2002

The oli deoxynucleotides is anchoraged on the silver electrode surface by means of physical methods. The in situ Electrochemistry-Surface Enhanced Raman Scattering (SERS) Spectrum is used to study the adsorption state of 26-mers oli deoxynucleotides (ODN) and 13-mers ODN on the electrode surface respectively. The SERS spectra of oligdeoxynucleotides based on the silver electrode have obtained. The results of study of the SERS spectra change of ODN with the change of potential on the silver electrode demonstrate that the oli deoxynucleotides adsorbed on the silver electrode surface primarily through the special base-Adenine (A).The adsorption state changes with the variation of the potential on the electrode. The shorter ODN changes more quickly and is more sensitive to the change of potential than the longer ODN(see Table 1).
- Oli deoxynucleotide (ODN);SERS;Adenine;Adsorption;Silver electrodes
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