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EXTERNAL HEAVY ATOM EFFECTS ON THE S 1 AND T 1 ELECTRONIC STATES OF INDOLE
Author(s) -
Lessard Ginette,
Durocher Gilles
Publication year - 1979
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.1751-1097.1979.tb07066.x
Subject(s) - phosphorescence , indole test , chemistry , bromide , photochemistry , ether , absorption (acoustics) , methylene , fluorescence , chloroform , medicinal chemistry , inorganic chemistry , organic chemistry , materials science , physics , quantum mechanics , composite material
— The absorption, fluorescence and phosphorescence spectra along with the phosphorescence decay function of indole perturbed by various amounts of halocarbons have been studied in a 1:1 ethanol‐ether glass at 77 K. For carbon tetrachloride. chloroform, halothane and methylene chloride used as quenchers. the biexponential nature of the phosphorescence decay prompted us to assume the existence of a triplet state complex (exciplex) between indole and the halocarbons. On the other hand. propyl bromide gives rise to a non‐exponential decay and to an increase in the phosphorescence intensity suggesting the occurrence of a normal external spin‐orbital coupling interaction between indole and the propyl bromide molecule.