Preparation and properties of C60-polysiloxane hybrids

C-60-polysiloxane hybrids were prepared by the reaction of triethoxysilylated C-60 (TES-C-60) with methylpolysiloxane (MPS) or alpha, omega-dihydroxypolydimethylsiloxane (STPDS). TES-C-60 was synthesized by hydrosilylation using triethoxysilane and C-60 in the presence of chloroplatinic acid. TES-C-60 was mixed with NIPS and heated to provide a bulk body of C-60 containing polysiloxane hybrid in a Si/C-60 molar ratio of 1000:500. The formation of this hybrid is based on the hydrolytic polycondensation of TES-C-60 and NIPS to fix C-60 into the silica matrix by a chemical bond. TES-C-60 and STPDS also provide an isolatable thin film Of C-60 containing polysiloxane hybrid by an ethanol-forming condensation reaction. Because no gelation was observed when only STPDS was aged, it is thought that TES-C-60 serves as a cross-linking point in gel formation.