Abstract
A series of well-defined aniline-chain-end-functionalized regioregular poly(3-hexylthiophene)s (P3HT-NH2) have been successfully synthesized on the basis of Grignard metathesis polymerization. The molecular weights of P3HT-NH2 could be varied from 1960 to 28 000 g mol−1, with low polydispersity indices in the range of 1.06–1.29, as determined by gel permeation chromotography. The selectivity of monofunctionalization reactions and the high degrees of amine functionality (85–92%) were confirmed by Matrix-assisted laser desorption ionization time-of-flight mass spectroscopy. Block copolymers through ionic interaction were successfully synthesized by simply blending P3HT-NH2 with carboxy chain-end-functionalized polystyrene, which was prepared on the basis of living anionic polymerization. The thermal and optical properties of block copolymers were investigated by differential scanning calorimetry, Thermogravimetric analysis and UV-vis spectroscopy. The self-assembly behavior of the polymer was investigated by atomic force microscopy and grazing incidence X-ray scattering.
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Acknowledgements
We thank the Japan Society for the Promotion of Science (JSPS) for supporting this study by KAKENHI (20850014). This study was also supported in part by the Korea Science & Engineering Foundation (National Research Laboratory Program and Center for Electro-Photo Behaviors in Advanced Molecular Systems) and by the Korean Ministry of Education, Science & Technology (MEST) (BK21 Program and World Class University Program). The GIXS measurements at Pohang Accelerator Laboratory were supported by MEST, POSCO and Pohang University of Science & Technology.
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Higashihara, T., Takahashi, A., Tajima, S. et al. Synthesis of block copolymers consisting of poly(3-hexylthiophene) and polystyrene segments through ionic interaction and their self-assembly behavior. Polym J 42, 43–50 (2010). https://doi.org/10.1038/pj.2009.312
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DOI: https://doi.org/10.1038/pj.2009.312
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