Yin Jiangliang, Choi Shinyoung, Pyle Daniel, Guest Jeffrey R, Dong Guangbin
Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States.
Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, United States.
J Am Chem Soc. 2023 Aug 30;145(34):19120-19128. doi: 10.1021/jacs.3c08143. Epub 2023 Aug 21.
Synthesis of sequence-defined monodisperse π-conjugated polymers with versatile backbones remains a substantial challenge. Here we report the development of an integrated iterative binomial synthesis (IIBS) strategy to enable backbone engineering of conjugated polymers with precisely controlled lengths and sequences as well as high molecular weights. The IIBS strategy capitalizes on the use of phenol as a surrogate for aryl bromide and represents the merge between protecting-group-aided iterative synthesis (PAIS) and iterative binomial synthesis (IBS). Long and monodisperse conjugated polymers with diverse irregular backbones, which are inaccessible by conventional polymerizations, can be efficiently prepared by IIBS. In addition, topology-dependent and chain-length-dependent properties have been investigated.
合成具有通用主链的序列定义单分散π共轭聚合物仍然是一项重大挑战。在此，我们报告了一种集成迭代二项式合成（IIBS）策略的开发，以实现共轭聚合物的主链工程，其长度、序列精确可控且分子量高。IIBS策略利用苯酚作为芳基溴的替代物，代表了保护基团辅助迭代合成（PAIS）和迭代二项式合成（IBS）的融合。通过IIBS可以高效制备具有各种不规则主链的长链且单分散的共轭聚合物，而这些聚合物是传统聚合方法无法获得的。此外，还研究了拓扑依赖性和链长依赖性性质。
