Triarylamine polymers by microwave-assisted polycondensation for use in organic field-effect transistors

Triarylamine polymers can be rapidly assembled by microwave-assisted amination of aryldibromides. A series of polymers are reported with backbones containing 4,4′-biphenyl, 2.9-fluorene and 3,6-carbazole repeating units. These polymers have been used to fabricate organic field-effect transistors. The devices show very stable operation under ambient conditions and p-type mobilities up to 2.3 × 10−3 cm2V−1 s−1, close to the highest mobility reported to date for this class of amorphous semiconductors.