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INDICATION OF FAST TRIPLET FORMATION IN BIMOLECULAR QUENCHING OF EXCITED SINGLET STATES STUDIED BY CONVENTIONAL FLASH PHOTOLYSIS
Author(s) -
Vogelmann Ekehardt,
Kramer Horst E. A.
Publication year - 1976
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.1751-1097.1976.tb06878.x
Subject(s) - flash photolysis , triplet state , photochemistry , quenching (fluorescence) , singlet state , chemistry , excited state , singlet fission , atomic physics , fluorescence , kinetics , reaction rate constant , physics , optics , quantum mechanics
Summary The bimolecular quenching of the first excited singlet state of oxonine by allylthiourea leads to the formation of the triplet state of the dye. This has been proved by comparison with the triplet‐triplet absorption spectrum of oxonine obtained by triplet‐triplet energy transfer. The conventional flash experiments suggest that the dye triplet state is produced directly rather than by radical recombination.