A series of new soluble compounds based on a combination of biphenyl and st
ilbene structural elements having a low tendency to crystallize is describe
d. Investigations on the effect of different substituents on the photolumin
escence (PL) are presented. The new biphenyls are suitable as blue emissive
layers in light emitting diodes (LEDs). (C) 2000 Elsevier Science S.A. All
rights reserved.