DETECTION OF THE EXCITED SINGLET STATE OF A DEPROTONATED, REDUCED FLAVIN
- 1 May 1993
- journal article
- Published by Wiley in Photochemistry and Photobiology
- Vol. 57 (s1) , 1053-1055
- https://doi.org/10.1111/j.1751-1097.1993.tb02970.x
Abstract
The excited singlet state of a deprotonated, reduced flavin [1,5-dihydro-N(3)-carboxymethyllumiflavin] in aqueous solution at pH 8 has been detected by laser flash photolysis. The broad absorption band maximized at approximately 490 nm (epsilon = 9.9 x 10(3) M-1 cm-1). The lifetime of the transient was found to be 100 +/- 15 ps. The lifetime was not affected by the presence of pyrimidine dimers, which would be monomerized under these conditions. A longer-lived transient, tentatively identified as the solvated electron, was also detected. The neutral reduced flavin did not give a detectable transient.Keywords
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