Polythiophene-block-polyfluorene and Polythiophene-block-poly(fluorene-co-benzothiadiazole): Insights into the Self-Assembly of All-Conjugated Block Copolymers

摘要: All-conjugated block copolymers have significant potential for solution-processed optoelectronic applications, in particular those relying on a p/n junction. Herein, we report the synthesis and structure of all-conjugated diblock poly(3-hexylthiophene)-block-poly(9,9-dioctylfluorene) poly(3-hexylthiophene)-block-poly(9,9-dioctylfluorene-co-benzothiadiazole) thin films bulk. The are prepared using combination Grignard metathesis polymerization Suzuki polycondensation characterized with NMR spectroscopy, size-exclusion chromatography, multiangle laser light scattering, UV/vis spectroscopy. Structure bulk is differential scanning calorimetry, X-ray diffraction, small-angle atomic force microscopy. Diblock copolymer self-assemble into crystalline nanostructure some long-range order after extended solvent annealing, scattering measurements show that pow...