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Citation: Wu Qihui, Xiao Xiaoyin, Yang Yiyun, Cai Lirong, Dai Hongping, Sun Shigang. Study of Electropolymerization of o-Phenylenediamine and Redox Process of Polymer Films[J]. Chinese Journal of Applied Chemistry, ;1999, 16(5): 5-8. shu

Study of Electropolymerization of o-Phenylenediamine and Redox Process of Polymer Films

1.
Department of Chemistry, State Key Laboratory for Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen 361005

Received Date: 14 December 1998
Available Online: 5 July 1999
Fund Project: 国家自然科学基金资助项目(29833060) (29833060)

The electropolymerization of o-phenylenediamine(OPD) on gold electrode and the redox behavior of poly(o-phenylenediamine)(POPD) films in sulfuric acid solutions have been studied by cyclic voltammetry and electrochemical quartz crystal microbalance(EQCM). The decrease in the resonant frequency of the quartz crystal during electropolymerization of OPD demonstrated that the deposition of the polymer films occurrs mainly in the potential range>0.5 V, at which the monomers are anodically oxidized. It is revealed that the protonation and deprotonation play an important role in the redox process of POPD films. The protonation during the reduction of POPD film induces the intercalation of anions, whereas the deprotonation in the oxidation of POPD film makes the escape of anions from the film. The quantity of anions intercalated into POPD film has been calculated according Sauerbry equation from the frequency decrease of EQCM electrode. Its values are in the range of 10^-9 to 10^-8 mol/cm² and varies with the mass of POPD film as well as with the scan rate of electrode potential.
- o-phenylenediamine,
- electropolymerization,
- cyclovoltammetry,
- electrochemical quartz crystal microbalance
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Study of Electropolymerization of o-Phenylenediamine and Redox Process of Polymer Films

南开大学师唯/华北电力大学（保定）刘景维：二维配位聚合物中有序的亲锂冠醚位点用于无枝晶锂沉积

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通讯作者: 陈斌, bchen63@163.com