Polysilyne
In organosilicon chemistry, polysilynes are chemical compounds with the formula, where R can be hydrogen, or organyl. Although their name suggests a relationship to alkynes, polysilynes are a class of silicon-based random network polymers primarily composed of tetrahedral silicon atoms, each connected to one hydrogen or carbon and three Si atoms. These compounds are prepared by Wurtz coupling of alkyltrichlorosilanes :
The methyl and hexyl derivatives have been described. Poly is a dark yellow powder. With some solvents it forms a colloidal suspension that is clear and non-viscous, which may then be deposited as a film or coating on various substrates.
Poly is a preceramic polymer, converting to silicon carbide upon thermolysis in an inert atmosphere. The optical properties of these materials has attracted attention.