Todd Alexander D, Bielawski Christopher W
Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States.
Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan 689-798, Republic of Korea.
ACS Macro Lett. 2015 Nov 17;4(11):1254-1258. doi: 10.1021/acsmacrolett.5b00505. Epub 2015 Oct 27.
Kumada catalyst-transfer polycondensation was used to synthesize poly(5,6-difluorobenzotriazole--4-hexylthiophene) (PFBTzHT), an alternating donor-acceptor conjugated polymer, in a controlled manner. Through a series of kinetic studies, a linear relationship between the monomer conversion and the molecular weight of the resulting polymer was observed while maintaining narrow polydispersities (s ≤ 1.4). Moreover, the displayed a linear relationship with the initial monomer-to-catalyst feed ratio, and polymers with s up to 25 kDa were successfully synthesized. All-conjugated block copolymers containing segments of PFBTzHT and poly(3-hexylthiophene) (P3HT) were also obtained in various compositions (30-70% P3HT) via sequential monomer addition in a single vessel.
利用熊田催化剂转移缩聚反应以可控方式合成了交替供体-受体共轭聚合物聚（5,6-二氟苯并三唑-4-己基噻吩）（PFBTzHT）。通过一系列动力学研究，观察到单体转化率与所得聚合物分子量之间呈线性关系，同时保持较窄的多分散性（s≤1.4）。此外， 与初始单体与催化剂的进料比呈线性关系，成功合成了分子量高达25 kDa的聚合物。还通过在单个容器中依次添加单体，以各种组成（30 - 70% P3HT）获得了包含PFBTzHT和聚（3-己基噻吩）（P3HT）链段的全共轭嵌段共聚物。
