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Direct observation for photophysical and photochemical processes of folic acid in DMSO solution

Paper ID Volume ID Publish Year Pages File Format Full-Text
28936 44107 2007 6 PDF Available
Title
Direct observation for photophysical and photochemical processes of folic acid in DMSO solution
Abstract

Using the fast optical technique of laser flash photolysis by a kinetic absorption detector, the photophysical and photochemical processes of folic acid have been observed. By comparison of transient absorptions from photolysis between folic acid and its components, pteroic acid, pterin and 6-carboxypterin, it has been demonstrated that electron-transfer reactions from 4-aminobenzoyl group to the triplet pterin moiety occur through intra- and inter-molecular processes of folic acid. The intermolecular electron-transfer reaction is suggested to be mediated by two tautomers of triplet states of folic acid, lactim and lactam, in different rate constants, 1.4 × 109 and 1.6 × 108 M−1 s−1, respectively.

Keywords
Laser flash photolysis; Folic acid; Electron transfer; Excited triplet state; Photochemistry
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Direct observation for photophysical and photochemical processes of folic acid in DMSO solution
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 185, Issue 1, 1 January 2007, Pages 51–56
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Price was $35.95
You save - $31
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