Here, we have described a simple and straightforward methodology for synthesis of rod–coil conjugated block copolymer poly(3-hexylthiophene)-block-polystyrene (P3HT-b-PS) of varying molecular weight and low polydispersity by chain extension of either a rod or coil block starting from a single bifunctional initiator through combination of Kumada catalyst transfer polymerization (KCTP) and atom transfer radical polymerization (ATRP). Advantages of the present method include the facile synthesis of the Ni(II) catalytic initiators from readily available laboratory reagents, avoiding high reactive intermediates for preparing Ni(ii) catalytic initiator, and the in situ nature of all the steps making large scale preparation of the block copolymer viable. Studies on solvent-induced structure formation and their impact on optical and electronic properties of the block copolymer were systematically performed. The block copolymer device fabricated from toluene shows the best field effect mobility of (2.1 ± 0.75) × 10^–3 cm² V^–1 s^–1 compared to results for other solvents. Overall, this work describes a facile synthetic strategy for a rod–coil conjugated block copolymer and its solvent-induced structure formation as guidance for fabricating high-performance organic electronic and optoelectronic devices.

中文翻译：

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使用单个双功能引发剂从杆或线圈嵌段简单而直接地合成杆-共轭嵌段共聚物的方法：溶剂依赖性自组装和场效应迁移率研究

在这里，我们描述了一种简单而直接的方法，用于合成棒-线圈共轭嵌段共聚物聚（3-己基噻吩）-嵌段-聚苯乙烯（P3HT- b（PS）具有不同的分子量，并且通过从单个双官能引发剂开始，通过结合Kumada催化剂转移聚合（KCTP）和原子转移自由基聚合（ATRP），对棒或线圈嵌段进行链扩展来改变分子量和低多分散性。本方法的优点包括从容易获得的实验室试剂容易地合成Ni（II）催化引发剂，避免了用于制备Ni（ii）催化引发剂的高反应性中间体，以及所有大规模制备乙腈的步骤的原位性质。该嵌段共聚物是可行的。系统地研究了溶剂诱导的结构形成及其对嵌段共聚物的光学和电子性能的影响。由甲苯制成的嵌段共聚物装置显示出最佳的场效应迁移率（2.1±0.75）×10^–3 cm ² V ^–1 s ^–1，与其他溶剂相比。总的来说，这项工作描述了棒-线圈共轭嵌段共聚物的简便合成策略及其溶剂诱导的结构形成，以指导制造高性能有机电子和光电器件。