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Title: Evidence for intramolecular energy transfer in photodecomposition of phenylalanine at different pH
Authors: Mukherjee, T
Mittal, L J
Mittal, J P
Issue Date: Nov-1989
Publisher: NISCAIR-CSIR, India
Abstract: Absorption of 253.7 nm UV light by the aromatic chromophore in the O2-free aqueous solutions of phenylalanine leads to the cleavage of the molecule forming ammonia and carbon dioxide, which have been quantitatively estimated within a pH range of ~ 2 to 12, using specific gas sensing electrodes. The yield Versus pH titration curve shows inflexion at ~pKa for the NH group. A possible mechanism is postulated based on the known rate constants and the results are compared with those obtained by flash photolysis studies to elucidate intramolecular energy transfer.
Page(s): 932-934
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.28A(11) [November 1989]

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