Photodehydroxylation of methoxybenzyl alcohols: rate constants for solvent and hydronium ion catalyzed photodehydroxylation and applicability of Förster cycle calculations

Solvent (water) and hydronium ion catalyzed rate constants for photodehydroxylation of several methoxybenzyl and dimethoxybenzyl alcohols are reported, derived from fluorescence quenching by hydronium ion and product quantum yield measurements. It is found that there is an additive substituent effec...

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Bibliographic Details
Published in:Journal of photochemistry and photobiology. A, Chemistry. Chemistry., 1989, Vol.46 (1), p.49-57
Main Authors: Wan, Peter, Chak, Becky, Krogh, Erik
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Photochemistry
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
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Summary:Solvent (water) and hydronium ion catalyzed rate constants for photodehydroxylation of several methoxybenzyl and dimethoxybenzyl alcohols are reported, derived from fluorescence quenching by hydronium ion and product quantum yield measurements. It is found that there is an additive substituent effect for promotion of photodehydroxylation. The results are discussed with reference to Förster cycle calculations for photoionization of ROH (to R + and −OH) in the excited singlet state.
ISSN:1010-6030
1873-2666
DOI:10.1016/1010-6030(89)87032-7