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|Title:||Evidence for intramolecular energy transfer in photodecomposition of phenylalanine at different pH|
Mittal, L J
Mittal, J P
|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.|
|Appears in Collections:||IJC-A Vol.28A(11) [November 1989]|
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