193 nm Photolysis of Aromatic and Aliphatic Dipeptides in Aqueous Solution: Dependence of Decomposition Quantum Yield on the Amino Acid Sequence

The values of molar absorption coefficient and quantum yields of photodecomposition and peptide bond scission were determined for a number of aromatic and aliphatic dipeptides under 193 nm laser irradiation in neutral argon-saturated aqueous solution. Under these conditions we could show that no dependence of the dipeptide decomposition quantum yield on the sequence of amino acid residues exists, neither for aromatic dipeptides nor for aliphatic ones.