Synthesis and investigation of the properties of a star-shaped polysilane

摘要

The intermediate monomer of a star-shaped polymer's cyclosiloxane core, was prepared from CH_3HSiCl_2 and 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane(D4) through the basic method of hydrosilylation reaction. Then, a star-shaped polysilane [poly(core-methylphenyl-diphenyl)silane] was synthesized by the classical Wurtz coupling reaction. Futhermore, UV absorption, fluorescent spectrum, UV-resistant stability and thermal properties of the star-shaped polysilane were investigated. Results reveal that star-shaped polysilane possesses good UV-resistant stability, favourable thermo-oxidative stability and strong fluorescence emitting near 400 nm.