Spectroelectrochemical Studies of the Conducting Polymer of o-Phenylenediamine

Abstract

Abstract: The redox mechanism of the conducting polymer film of poly-o-phenylenediamine(P-o-PD) in acid solution has been studied by cyclic voltammetry(CV), electrochemicalinsitu resonance Raman spectroscopy and UV-Vis subtractive reflectance spectroscopy. Theresults of the CVshow that the redox process of P-o-PDis controlled by the surfaceprocesses and three steady redox states are formed in the redox process. The in-situ resonanceRaman spectra not only verify the existence of the three steady states of P-o-PD, but alsoindicate that the structure of P-o-PDis dominated by a ladder polymer with phenazine rings. Thethree kinds of P-o-PDdisplay different stabilities and UV-Vis aborption spectra.Furthermore, the in-situ time--resolved UV-Vis reflectance spectroscopy is used to study the dynamicredox process of P-o-PD, and a possible reaction mechanism is proposed at last.

Key words: Spectroelectrochemistry, Poly-o-Phenylenediamine, Redox mechanism

CLC Number:

O633.21

TrendMD:

WU Ling-Ling, LUO Jin, LIN Zhong-Hua. Spectroelectrochemical Studies of the Conducting Polymer of o-Phenylenediamine[J]. Chem. J. Chinese Universities, 1997, 18(10): 1657.

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Spectroelectrochemical Studies of the Conducting Polymer of o-Phenylenediamine

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