TY - JOUR
T1 - Solvent effects on absorption and fluorescence spectra of diphenyltriafulvenes. Three modes of dipole moment variation upon excitation
AU - Richter, Y.
AU - Berlman, I. B.
AU - Agranat, I.
PY - 1977/7/15
Y1 - 1977/7/15
N2 - Three representative diphenyltriafulvenes, 4,4′-dicyano-1,2-diphenyltriafulvene (I), hexaphenyltriapentafulvalene (II) and 10-(2,3-diphenylcyclopropenyliden)-anthrone (III) have been investigated. On excitation, the dipole moment of I decreases and reverses sign, i.e., from a value of 7.9 D in the ground state to a value of about -5.3 D in the first excited electronic state. That of II remains unchanged at 6.3 D, and that of III increases from 8.5 D to about 26 D. The Onsager radius of 1 was found to be about 8.7 Å and that of IIi, about 12 Å.
AB - Three representative diphenyltriafulvenes, 4,4′-dicyano-1,2-diphenyltriafulvene (I), hexaphenyltriapentafulvalene (II) and 10-(2,3-diphenylcyclopropenyliden)-anthrone (III) have been investigated. On excitation, the dipole moment of I decreases and reverses sign, i.e., from a value of 7.9 D in the ground state to a value of about -5.3 D in the first excited electronic state. That of II remains unchanged at 6.3 D, and that of III increases from 8.5 D to about 26 D. The Onsager radius of 1 was found to be about 8.7 Å and that of IIi, about 12 Å.
UR - http://www.scopus.com/inward/record.url?scp=49449121154&partnerID=8YFLogxK
U2 - 10.1016/0009-2614(77)80577-0
DO - 10.1016/0009-2614(77)80577-0
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AN - SCOPUS:49449121154
SN - 0009-2614
VL - 49
SP - 238
EP - 242
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 2
ER -