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.

PDF ELECTRON_PARAMAGNETIC_RESONANCE_STUDIES_OF.pdf Restricted to Registered users only Download (510kB) | Request a copy

Abstract

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

Actions (login required)

View Item