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FLUORESCENCE QUENCHING OF 5,10,15,20‐TETRA( p ‐TOLYL)PORPHINE and ITS ZINC COMPLEX BY QUINONES. CHARGE‐TRANSFER INTERACTION and TRANSIENT EFFECT
Author(s) -
Yamada Sunao,
Sato Toshinori,
Kano Koji,
Ogawa Teiichiro
Publication year - 1983
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.1751-1097.1983.tb04470.x
Subject(s) - chemistry , photochemistry , quenching (fluorescence) , fluorescence , zinc , electron transfer , quinone , excited state , singlet state , acetone , stereochemistry , organic chemistry , atomic physics , physics , quantum mechanics
The fluorescent states of tetratolylporphyrin and its zinc complex in acetone were quenched by various kinds of quinones. The transient effect for the collisional quenching caused the upward deviation of the plots of the inversed fluorescence intensities of the porphyrins vs the quinone concentrations. A charge‐transfer interaction between the porphyrins in the singlet excited states and the quinones was suggested from the dependence of the quenching rate constants on the electron affinities of the quinones.