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THE PHOTOLYSIS OF PENICILLAMINE DISULPHIDE INWATER–2‐PROPANOL SOLUTIONS
Author(s) -
Grant D. W.,
Stewart J. H.
Publication year - 1985
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1985.tb03536.x
Subject(s) - chemistry , thiol , photodissociation , alcohol , aqueous solution , ammonia , valine , yield (engineering) , propanol , quantum yield , penicillamine , photochemistry , inorganic chemistry , medicinal chemistry , amino acid , organic chemistry , ethanol , biochemistry , materials science , physics , quantum mechanics , metallurgy , fluorescence
— Quantum yields of thiol, ammonia and valine were measured in the photolysis of aqueous deoxygenated solutions of penicillamine disulphide containing various concentrations of 2‐propanol. Low concentrations of alcohol (< 1 mol dm ‐3 ) had a negligible effect on the thiol and valine yields but completely inhibited the production of ammonia. High concentrations of alcohol increased the thiol and ammonia vields, while the valine yield exhibited a maximum at an alcohol concentration of about 3 mol dm ‐3 . The increased thiol yields were interpreted on the basis of the photolysis of hydrogen‐bonded alcohol‐amino acid “complexes”.