A. Kawski et al., FLUORESCENCE AND PHOSPHORESCENCE ANISOTROPY SPECTRA OF INDOLE IN POLY(VINYL ALCOHOL) FILM AT ROOM-TEMPERATURE, Zeitschrift fur Naturforschung. A, A journal of physical sciences, 49(11), 1994, pp. 1091-1092
Excitation anisotropy spectra of indole were measured in poly(vinyl al
cohol) film at room temperature. The behaviour of the phosphorescence
anisotropy of indole in isotropic and anisotropic PVA film enabled a c
onclusion to be drawn that the T-1- S-0 transition is located outside
the indole ring plane, close to the perpendicular direction.