Electroluminescent characteristics of a poly bis(alkoxyphenyl)silane

Poly bis(p-propoxyphenyl)silane (PBPPS) was synthesized as an example of po ly bis(alkoxyphenyl)silanes and the photoluminescence (PL) properties of sp in-coated PBPPS films were studied. Though a temporal PL-intensity quenchin g takes place under ultraviolet light irradiation, we round an increase of the quenched PL intensity with a factor of 1.7 by a heat treatment at 120 d egrees C for 15 min due to a thermal re-alignment of molecules in the film. The heat treatment was utilized to observe the electroluminescence of PBPP S from a PBPPS/Alq(3) double-layer device for the first time, indicating a possibility of poly bis(alkoxyphenyl)silanes toward light-emitting applicat ions. (C) 2000 Elsevier Science B.V. All rights reserved.