title: Polysiloxane-backbone block copolymers in a one-pot synthesis: a silicone platform for facile functionalization.
abstract: Block copolymers consisting exclusively of a silicon-oxygen backbone are synthesized by sequential anionic ring-opening polymerization of different cyclic siloxane monomers. After formation of a poly(dimethylsiloxane) (PDMS) block by butyllithium-initiated polymerization of D3, a functional second block is generated by subsequent addition of tetramethyl tetravinyl cyclotetrasiloxane (D4(V) ), resulting in diblock copolymers comprised a simple PDMS block and a functional poly(methylvinylsiloxane) (PMVS) block. Polymers of varying block length ratios were obtained and characterized. The vinyl groups of the second block can be easily modified with a variety of side chains using hydrosilylation chemistry to attach compounds with Si-H bond. Conversion of the hydrosilylation used for polymer modification was investigated.
authors: Johannes Gutenberg University Mainz, Institute of Organic Chemistry, Duesbergweg 10-14, 55099 Mainz, Germany.
authors: Paul
authors: P
authors: Boehm
authors: Mihail
authors: M
authors: Mondeshki
authors: Holger
authors: H
authors: Frey
mesh_terms: D015394:Molecular Structure; D058105:Polymerization; D012828:Silicones / Q000737:chemistry*; D012833:Siloxanes / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D012828:Silicones; D012833:Siloxanes