Abstract
Electronic absorption and fluorescence spectra of urocanic acid are studied in aqueous solution at different pH. The observed results are explained using molecular orbital geometry optimization calculations for the ground states of a number of tautomers of urocanic acid including those of its anion, followed by calculation of electronic transitions. The isomers of urocanic acid which would strongly absorb UV-B radiation have thus been identified. Further, the possible mechanisms of isomerization of urocanic acid from the trans - to cis -form which is related to its role in immunosuppression and UV-B induced skin cancer have been suggested.
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Schedule a callMore From: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
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