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Electron paramagnetic resonance studies of polymeric charge-transfer complexes

Palaniappan, S and Sathyanarayana, DN (1990) Electron paramagnetic resonance studies of polymeric charge-transfer complexes. In: Synthetic Metals, 38 (1). pp. 53-62.

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Electron paramagnetic resonance (EPR) spectroscopic studies are performed on a number of polymeric charge-transfer complexes with different polymer donors and low molecular weight acceptors. The g values, linewidths and spin concentrations at different temperatures have been determined. The results indicate that there is no change in the g values and linewidths with temperature. The signal intensity increases with temperature, which is typical of singlet-triplet systems separated by an activation energy. The spin concentration of the paramagnetic charge-transfer complexes generally increases with the strength of the donor-acceptor tendencies. The charge-transfer complexes transform finally to a diamagnetic product and this was confirmed by electronic absorption spectroscopy.

Item Type: Journal Article
Publication: Synthetic Metals
Publisher: Elsevier Sequoia
Additional Information: Copyright of this article belongs to Elsevier Sequoia.
Keywords: Electron paramagnetic
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 14 Dec 2007
Last Modified: 19 Sep 2010 04:41
URI: http://eprints.iisc.ac.in/id/eprint/12523

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