|Structure-Controlled Synthesis of ƒÎ-Conjugated Polymers
by Means of Transition-Metal Catalysts
International Research Center for Elements Science, Institute for Chemical Research, Kyoto University, Uji, Kyoto, Japan
Nippon Gomu Kyokaishi,(2008),81(10),431-437 General Review in Japanese
Recent progress in structure-controlled synthesis ofƒÎ-conjugated polymers is described. A particular interest is focused on transition-metal-catalyzed polymerization that enables precise control of molecular weights and stereoregularity of polymers.
The topics include: (a) chain-growth polycondensation to afford polythiophene, polyphenylene, and polyfluorene; (b) living ring-opening metathesis polymerization to give poly(phenylenevinylene); (c) polyaddition reactions based on stereoselective hydrosilylation and dimerization of alkynes; (d) stereocontrolled synthesis of poly(arylenevinylene)s (PAVs). The unique photochemical properties of PAVs are described.
ƒÎ-Conjugated Polymer, Precision Polymerization, Molecular-Weight Control, Stereocontrolled Synthesis