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Preparation of network π-conjugated copolymers with Ullmann type polycondensation

Nakajima K., Goto H.

International Letters of Chemistry, Physics and Astronomy

2014

Vol. 6

33--38

Ullmann type polycondensations in the presence of CuI and a base were carried out to afford network type π-conjugated copolymers. Infrared absorption spectroscopy measurements and surface observation using a scanning electron microscopy are carried out. Electron spin resonance spectroscopy measurements revealed that the cross-linked copolymers thus obtained contain small amount of copper. This polymerization conveniently allows production of network π-conjugated polymers. The polymer can be expected to have thermo-resistance.