PHOTOLUMINESCENCE BEHAVIOR AND PHOTOINDUCED ELECTRON-TRANSFER OF RU(BPY)(3)(2+) IN A POLYSILOXANE FILM

The photoluminescence behavior and photoinduced electron transfer of R u(bpy)(3)(2+) in a polysiloxane film were studied by observing the tem perature dependence of the excited-state lifetime of Ru(bpy)(3)(2+); a long lifetime in a polysiloxane film was attributed to the restricted molecular mobility of Ru(bpy)(3)(2+), Ru(bpy)(3)(2+) and phenothiazin e (PTZ) were dispersed in a polysiloxane film, and electron transfer f rom PTZ to Ru(bpy)(3)(2+) was studied by the reductive quenching of t he emission from Ru(bpy)(3)(2+). The electron-transfer reaction from PTZ to Ru(bpy)(3)(2+) occurred by a static mechanism, and the electro n-transfer distance was found to be 1.5 nm.