Elangovan, M. and Muthukumaran, A. and Anbukulandainathan, M. (2006) Comparison of solid state studies and electrochemical behavior of poly (dimethylsilane) and poly (dimethylstannum) film electrodes. Materials Letters, 60 (8). pp. 1099-1105. ISSN 0167-577X

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Abstract

Poly(dimethylsilane) (M. Wt. 2175) and poly(dimethylstannum) (M. Wt. 2650) have been successfully synthesized by electrochemical polymerization of dichloro-dimethylsilane and dichlorodimethylstannane, respectively, in a single-compartment cell equipped with aluminium electrodes in tetrabutylammonium tetrafluoroborate in dimethoxyethane as the supporting electrolyte. Thin films of the above polymers with a thickness of about 50–60 μm were prepared by physical vapor deposition technique. Si–Si and Sn–Sn catenations have been determined using Fourier Transform-Infrared spectroscopy, Nuclear Magnetic resonance spectroscopy and Ultraviolet-visible spectroscopic studies. Cyclic voltammetric measurements of the polymer thin film electrodes show the reduction peak of the polymers and give reversible response for the Fe3+ /Fe2+ redox couple. Impedance studies at different cathodic potentials clearly indicate that both the polymers behave like capacitive nature at less negative potentials and behave like a charge transfer carriers at more negative potentials. Mott–Schottky plot for these polymers reveal that the polymers are semi conducting nature of narrow band gap with high carrier densities and are p-type carriers.

Item Type:	Article
Uncontrolled Keywords:	Electrochemical synthesis; Polysilanes; Polystannane; Physical vapour deposition; Impedance study
Subjects:	Electroorganic
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	04 Apr 2012 05:44
Last Modified:	04 Apr 2012 05:44
URI:	http://cecri.csircentral.net/id/eprint/760

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