PALLADIUM CATALYZED C-C COUPLING FOR SYNTHESIS OF pi -CONJUGATED POLYMERS COMPOSED OF ARYLENE AND ETHYNYLENE UNITS.

Article abstract of DOI:10.1246/bcsj.57.752

Palladium compounds such as Pd(PPh//3)//4 and Pd(OAc)//2 catalyze polycondensation between dihalo aromatic compounds, X-Ar-X (Ar equals p-phenylene, 2,5-thiophenediyl, 9,10-anthracenediyl, 2,6-pyridinediyl, p-benzene-dicarbonyl, p-xylene- alpha , alpha prime -diyl), and acetylenic compounds (p-C//6H//4(C EQUVLNT CH)//2 or p-C//6H//4(C EQUVLNT CMgBr)//2). The polymers obtained have high thermal stabilities and most of them show fluorescence. One of the polymers is converted into semiconductors by doping with electron acceptors.