Chemistry

Simple Synthesis of Conjugated Polymers

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Science  15 Dec 2000:
Vol. 290, Issue 5499, pp. 2033
DOI: 10.1126/science.290.5499.2033d

Homogeneous transition-metal catalysts often require elegant and complex synthetic design. Brizius et al. show that a simpler approach can yield an efficient catalyst for polymerization reactions. Alkyne metathesis (swapping substituents of the triple bonds of two molecules) proceeds for a wide variety of alkynes in 1,2-dichlorobenzene when Mo(CO)6 and 4-chlorophenol are added. The reactions are not affected by the presence of alkene groups in the same molecule. This approach can be used to make highly substituted conjugated polymers like those used in light-emitting diodes or thin-film transistors but with the advantage that these hybrid polymers can incorporate both double and triple bonds bridging the phenyl groups. — PDS

J. Am. Chem. Soc., in press.

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