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Synthesis and Characterization of Highly Regioregular Poly (3 - Hexylthiophene)

Regioregular poly (3-hexylthiophene) was synthesized by exchanging with Grignard agent followed by coupling with catalysis of Ni (dppp)Cl2. A nearly 100% HT-HT structure was verified from 1H-NMR and 13C-NMR data analysis. This highly regioregular structure gives P3HT outstanding stability and certain redshift of absorption spectra was found in contrast to materials with lower regioregularity.