H. Katayama, T. Tawa, G. W. Haggquist
Nov 1, 1993
Citations
0
Influential Citations
3
Citations
Journal
Macromolecules
Abstract
Poly[(2-naphthylalkyl methacrylate)-co-(methyl methacrylate)] and poly[(9-phenanthrylmethyl methacrylate)-co-(methyl methacrylate)] films show phosphorescence spectra from «triplet trap sites». The emission is slightly red-shifted from the monomer phosphorescence with a vibrational structure which is different from that of the triplet excimer. The energy migration rate in these systems is complex since the trap sites have various energy levels depending on the amplitude of interaction energies. The kinetic analysis was made on the basis of Bâssler's model in which the site energies have a Gaussian distribution. The simulations are in good agreement with experimental data in a temperature range of 115-165 K