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Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
RESEARCH ARTICLE

Photoreduction of deazaflavin. Spectroscopic investigations

M Bliese, A Launikonis, JW Loder, AWH Mau and WHF Sasse

Australian Journal of Chemistry 36(9) 1873 - 1883
Published: 1983

Abstract

Photophysical and photochemical properties of deazaflavin (3,10-dimethylpyrimido[4,5-b]quinoline- 2,4-(3H,10H)-dione) and some of its 1,5-dihydro derivatives have been investigated. Contrary to earlier reports the photodimer of deazaflavin is non-luminescent throughout the temperature range 77-295 K.

Excitation of deazaflavin in the presence of oxalate anion (acetate buffer pH 5.0) causes photodimerization with quantum efficiencies exceeding unity. A mechanism involving a triplet excimer of deazaflavin has been proposed for this reaction.

https://doi.org/10.1071/CH9831873

© CSIRO 1983

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