Fluorescence Properties of Bicbromophores Doped io Polycarbonate

Abstract

Fluorescence properties of the solid films of polymers doped with biscarbazolyl compounds have been examined. For α,γ-biscarbazoIylalkanes, the monomer fluorescence is quenched and excimer fluorescence becomes prominent as the concentration increases. The intensity ratios of excimer emission to monomer emission are varied in the order of compounds in which two carbazole groups are bound by Ce, C4, Cio, Cs and Cs methylene chains. No sandwich excimer fluorescence could be observed in 1,2-trans-bis-biscarbazoly-Icyclobutane even at the highest accessible concentration. Thus the intramolecular interaction dominates the excimer formation in solid solutions of biscarbazolyl compounds in polycarbonate. © 1984, The Society of Polymer Science, Japan. All rights reserved.