Preparation and properties of thin films of polysilane copolymers, poly(dimethylsilylene-co-methyl-n-propylsilylene)s

Oriented thin films and unoriented thin films of polysilane copolymers, pol y(dimethylsilylene-co-methyl-n-propylsilylene)s, were prepared by friction transfer and solution cast method, and their properties were compared with each other. There were two solid states in the polysilane copolymers at roo m temperature. One is the stable phase, which absorbs the light around 300n m and emits the light at 360nm. Another is the metastable phase, which has the absorption hand around 340nm and the fluorescence at 355nm.