Fluorescence quenching study on some substituted polysilanes

The fluorescence spectra of polysilanes can be quenched by halohydrocarbons. The quenching processes are not simple diffusion-controlled processes but involve both dynamic and static quenching processes. The fluorescence of some electron-accepting compounds can be quenched by polysilanes. The quenching mechanism is mainly caused by charge transfer interaction between fluorophores and quenchers. All the results proved that the rapid energy migration along the polysilane main chain does really exist in the excited state whether it is homopolymer or copolymer.