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DIRECT DETECTION OF SINGLET OXYGEN SENSITIZED BY HAEMATOPORPHYRIN AND RELATED COMPOUNDS
Author(s) -
Keene J. P.,
Kessel D.,
Land E. J.,
Redmond R. W.,
Truscott T. G.
Publication year - 1986
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.1751-1097.1986.tb09501.x
Subject(s) - singlet oxygen , ammonium bromide , oxygen , quenching (fluorescence) , chemistry , quantum yield , singlet state , luminescence , photochemistry , benzene , yield (engineering) , bromide , inorganic chemistry , materials science , excited state , fluorescence , organic chemistry , physics , optics , atomic physics , pulmonary surfactant , biochemistry , optoelectronics , metallurgy
— Direct time‐resolved detection of the luminescence at 1270 nm from ‘singlet oxygen’ was used to estimate the quantum yield of singlet oxygen production (Φ Δ ) from a series of related porphyrins in benzene and in D 2 O. From this and available data the fraction of oxygen quenching interactions leading to singlet oxygen production (S Δ ) was derived in most cases. A marked increase in Φ Δ value was observed for di‐haematoporphyrin ester (DHE) in cetyltrimethyl ammonium bromide/D 2 O solution in comparison to D 2 O alone, this increase is attributed to a major structural alteration of DHE on introduction of the detergent.