%0 Journal Article
%T Electronic Absorption and Fluorescence Spectra of Indole . Derivatives. Quantitative Treatment of the Substituent Effects and a Theoretical Study
%A Aaron
%A Jean-Jacques
%A Bouin
%A Danielle
%A Parkanyi
%A Cyril
%A Tine
%A Alphonse
%A Villiers
%A Claude
%J -
%D 1983
%X Sa£żetak The room-temperature absorption spectra of nine substituted indoles containing the acetyl, bromo, carboxy, cyano, formyl, methoxy, methyl, and nitro substituents have been measured in cyclohexane, methanol, ethanol, ethanol-water (1 : 9, vol.), and in 0.1 .M NaOH ethanolic solution. The room-temperature excitation and emission fluo.rescence spectra of these compounds have been obtained in cyclohexane and ethanol. Satisfactory linear Hammett correlations have been established for the electronic absorption and fluorescence maxima wavenumbers of most of the indoles. PPP quantum-chemical calculations indicate a good agreement between the experimental and calculated electronic transitions and provide information about the distribution of Jt-electrons in the ground and the lowest excited singlet states of indole derivatives
%U https://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=286465