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Solvent effects on the thioxanthone triplet quenching by vinyl monomers

✍ Scribed by J.P. Fouassier; P. Jacques; M.V. Encinas

Publisher: Elsevier Science
Year: 1988
Tongue: English
Weight: 319 KB
Volume: 148
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(88)87277-4

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✦ Synopsis

The quenching rate constants for the deactivation of triplet thioxanthone by methyl methacrylate and N-vinyl-2-pyrrolidone undergo a drastic decrease when the solvent polarity increases. This variation is represented by the ti, (Y, B scale of solvent polarity. The contribution to this solvent effect of vibronic coupling between nearby na* and XA* states of thioxanthone triplets is considered.

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