The problem of triplet self-quenching in thioketone photochemistry

Ramesh, V and Ramnath, N and Ramamurthy, V (1983) The problem of triplet self-quenching in thioketone photochemistry. In: Journal of Photochemistry, 23 (2). pp. 141-148.

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Abstract

The highly efficient quenching of the thioketone triplet state by ground state thioketones with various electronic and structural features was investigated by means of phosphorescence quenching measurements in a no. of solvents. Electron-withdrawing groups conjugated to the thioketone chromophore and steric crowding around the lone pair of electrons on the S atom tend to decrease the quenching rate. The ground state thioketone quencher acts as the donor and the excited thioketone phosphorescer acts as the acceptor in the quenching process. Possible involvement of triplet excimers was investigated, but no excimer or heteroexcimer emission was obsd.

Item Type:	Journal Article
Publication:	Journal of Photochemistry
Publisher:	Elsevier
Additional Information:	Copyright of this article belongs to Elsevier
Department/Centre:	Division of Chemical Sciences > Organic Chemistry
Date Deposited:	20 Jun 2008
Last Modified:	19 Sep 2010 04:45
URI:	http://eprints.iisc.ac.in/id/eprint/14331

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