Determination of the directions of the transition dipoles in tetrabutylperylene in stretched polymers.
The directions of the transition dipole moments of 2,5,8,11,-tetra-butylperylene were determined from angle-resolved fluorescence depolarization experiments on molecules embedded in a stretched anhydrous nitrocellulose matrix. The absorption transition moments lies almost parallel to the elongated axis of the molecule, but the emission transition moment makes an angle of 20° with the axis. The orientational distribution of the molecules in the polymer indicates significant deviations from a circular form.
Debye Institute and Department of Molecular Biophysics, Buys Ballot Laboratory, University of Utrecht, P.O. Box 80 000, 3508 TA, Utrecht, The Netherlands.
M A
MA
van Zandvoort
P M
PM
Lettinga
C
C
van der Struijf
G
G
van Ginkel
Y K
YK
Levine