Laser photochemistry of amino acids and peptides

David N. Nikogosyan

doi:10.1117/12.146137

17 June 1993 Laser photochemistry of amino acids and peptides

David N. Nikogosyan

Proceedings Volume 1921, Laser Spectroscopy of Biomolecules; (1993) https://doi.org/10.1117/12.146137
Event: Laser Spectroscopy of Biomolecules: 4th International Conference on Laser Applications in Life Sciences, 1992, Jyvaskyla, Finland

Abstract

A comparison of photochemical properties of three aromatic and five aliphatic amino acids as well as seven peptides in neutral liquid aqueous solution at five different wavelengths was carried out. The photolysis quantum yield and the quantum yield of peptide bond scission were determined for the first time. The experimental dependence of tryptophan photodecomposition efficiency versus the energy excess above the ionization threshold confirms recent theoretical predictions of photoionization properties of molecules in diluted aqueous solution below the bottom of the conduction band.

Citation Download Citation

David N. Nikogosyan "Laser photochemistry of amino acids and peptides", Proc. SPIE 1921, Laser Spectroscopy of Biomolecules, (17 June 1993); https://doi.org/10.1117/12.146137

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