Sp. Huang et al., STUDIES OF PHOTOEXCITATIONS IN POLY(PHENYLENE-ETHYNYLENE-SILANE), Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 256, 1994, pp. 513-518
A variety of optical probe techniques have been applied to films of po
ly(phenylene-ethynylene-silane) copolymers. We show that the sigma-ele
ctron bands dominate the absorption and electro-absorption spectra, wh
ereas the lower energy pi-electron bands give rise to photoluminescenc
e from singlet excitons and to long-lived triplet excitons, respective
ly.