UV PHOTOELECTRON-SPECTROSCOPY OF POLYSILANES AND POLYGERMANES

UV photoelectron spectra were measured for ten polymers with main chains composed of Si and Ge atoms. The spectra of poly(dialkylsilane)s were described well as the overlap of the spectra of constituent parts, while polysilanes with aryl side groups showed the effect of sigma-pi mixing. The spectra of polygermanes and Si-Ge block copolymers are fairly similar to those of corresponding polysilanes, while Si-Ge random copolymers show indications of the effect of the presence of many Si-Ge bonds.