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Contribution of solvent effect to the optical spectra of polyanilines: has it been underestimated

Ghosh, S (1994) Contribution of solvent effect to the optical spectra of polyanilines: has it been underestimated. In: Chemical physics letters, 226 (3-4). pp. 344-348.

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Official URL: http://dx.doi.org/10.1016/0009-2614(94)00743-8

Abstract

The coefficient of thermochromism of polyaniline solutions has been found to be solvent dependent and the solvent effect is not negligible. Hence, thermochromism of polyaniline solutions cannot be explained solely on the basis of conformational change induced by a change in temperature. Further, comparison of the solvatochromism of polyaniline and polytoluidine shows a higher solvatochromic shift for the former. It implies that the higher energy associated with the exciton peak of polytoluidine is not due to the higher ring torsional angle induced by the higher steric repulsion of the methyl group, as widely accepted, but is due to its less solvatochromic red-shift as compared to polyaniline.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier science.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 26 Mar 2011 05:33
Last Modified: 26 Mar 2011 05:33
URI: http://eprints.iisc.ernet.in/id/eprint/36308

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