SOLVENT EFFECTS ON THE FLUORESCENT STATES OF INDOLE DERIVATIVES‐DIPOLE MOMENTS
作者:
Ming Sun,
Pill‐Soon Song,
期刊:
Photochemistry and Photobiology
(WILEY Available online 1977)
卷期:
Volume 25,
issue 1
页码: 3-9
ISSN:0031-8655
年代: 1977
DOI:10.1111/j.1751-1097.1977.tb07416.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
Abstract—Electronic spectra of indoles are very sensitive to solvents. These solvent effects are particularly pronounced in the case of the fluorescence spectra of indoles. In order to elucidate the solvent band shifts during the relaxation of the excited states, particularly in polar solvents, the dipole moments of the excited singlet states have been estimated from the data of solvent‐dependent Stokes shifts. In addition to indole, indole‐5‐carboxylic acid, indole‐3‐carboxylic acid, indole‐2‐carboxylic acid, 5‐cyano‐ and 5‐bromo‐indoles have been investigated. All indoles showed a substantial increase in dipole moment upon excitation to the emitting state. These results are generally consistent with the Pariser‐Parr
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