MICROPATTERN OF GEO2 GEC LINES PREPARED BY UV IRRADIATION AND HEAT-TREATMENT OF POLYGERMANE COPOLYMERS OF METHYLPHENYLGERMYLENE/PHENYLGERMYNE UNITS/

Upon ultraviolet irradiation of polygermane copolymers of methylphenyl germylene/phenylgermyne units (PhMeGe)(n)(PhGe)(m) in air, the germani um-germanium bond in the copolymer film changed into a digermoxane cha in, Laser flash photolysis of the copolymer film showed the intermedia cy of polygermyl radicals generated by Ge-Ge bond homolysis, The XPS s howed the formation of germanium carbide (GeC) and germanium dioxide ( GeO2) upon heating the unirradiated and irradiated copolymer (PhMeGe)( n)(PhGe)(m) films, respectively, A relatively high-resolution micropat tern of GeC/GeO2 was obtained by combining the photochemical and therm al properties of the copolymers of methylphenylgermylene/phenylgermyne units. (C) 1997 John Wiley & Sons, Ltd.