Polysilane blocks, synthesis

The Synthesis, Self-Assembly and Self-Organisation of Polysilane Block Copolymers... 

Fig. 4 Approaches to the synthesis of polysilane block copolymers by living polymerization techniques (a) via anionic polymerization of masked disilenes (b) via anionic ring-opening polymerization of cyclotetrasilanes...

Polymerization ofiVIasked Disilenes. A novel approach, namely, the anionic polymerization of masked disilenes, has been used to synthesize a number of poly(dialkylsilanes) as well as the first dialkylamino substituted polysilanes (eq. 13) (111,112). The route is capable of providing monodisperse polymers with relatively high molecular weight M = lO" — 10 ), and holds promise of being a good method for the synthesis of alternating and block copolymers. 

In the following, the synthesis of different types of organosilicon polymers as potential precursors for ceramics is highlighted topologically, starting from polysilanes with Si-Si linkages, followed by polycarbosilanes. Subsequently polysilazanes with Si-N building blocks and polymers with multi-element sequences, such as PSCs (Si-N=C=N), will be discussed. 

Design and synthesis of hybrid polymers and of dendrimers for special applications and as building blocks for carbosilanes, polysilanes catalysis and highly crosslinked coatings. 

Kawabe T, Naito M, Fujiki M (2008) Multiblock polysilane eopolymers One-pot Wurtz synthesis, flutnide anion-induced block-selective scission experi-mraits, and spectroscopic characterization. Macromolecules 41(6) 1952-1960... 

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