We describe here the synthesis and characterization of a novel diaminopyrimidine (Py) functionalized polythiophene block copolymer (P3) and a thymine functionalized fullerene derivative (F1), and their self-assembly through complementary triple hydrogen bonding interactions. Fluorescence quenching studies showed one-on-one complexation between Py and F1 due to the strong complementary hydrogen bonding interactions. The self-assembly of such supramolecular structures can be conveniently fine-tuned by varying relative block lengths and fullerene loading percentages. This type of interplay between block copolymer self-assembly and complementary hydrogen bonding can potentially lead to ordered bulk heterojunction (BHJ) morphologies in next generation organic solar cells.

Conjugated rod-rod block polythiophenes and supramolecular self-assembly with fullerene toward ordered BHJ morphologies

244th National Meeting (2012)

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