Multifunctional chlorosilane

There are two gereral routes to mikto-arm star polymers. The first method makes use of the stepwise addition of living polymers to multifunctional chloro-silane compounds [59-62], The Athens group uses the sequential addition of living polymers to multifunctional chlorosilane compounds under tight stoichiometric control [63, 64],... 

The deliberate introduction of multifunctional branching into anionically prepared polydiene and poly (diene-co-styrene) polymers produces materials with unique morphological and viscoelastic properties (1-3). Work has included synthesis of symmetric star polymers produced by reaction of living polyanionic "arms" with multi-functional chlorosilane (4-9),... 

The synthesis was carried out by anionic polymerization, sequential addition of monomers, and the use of 2-(chloro-methylphenyl)ethyldimethyl chlorosilane as a specific heterofunctional linking agent. The PIP, PDMS, and P2VP domains form triple coaxial cylinders with a hexagonal shape packed in a hexagonal array in the PS microphase, to form the honeycomb-shaped matrix. The potential applications of such systems include multifunctional sensors and multiselective catalysts for sequential or simultaneous chemical reactions of various kinds. 

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