淮北师范大学许磊团队报道了通过结晶驱动自组装，精确制备聚芴-嵌段-聚噻吩-嵌段-聚苯基异氰酸酯的分级胶束。相关研究成果发表在2024年10月28日出版的国际学术期刊《德国应用化学》。

分级胶束的精确制备是现代材料科学和化学中的一个基本挑战。

该文中，研究人员使用Ni（II）络合物作为活性/受控聚合的单一催化剂，通过顺序添加相应的单体，使用一锅法合成了聚（二正己基芴）-嵌段聚（3-四乙二醇噻吩）（聚（1m-b-2n））二嵌段共聚物和聚芴-嵌段-聚噻吩-嵌段-聚苯基异氰酸酯)三嵌段共聚物。

两亲性共轭聚合物（1m-b-2n）的结晶驱动自组装导致形成长度可控、分散性窄的纳米纤维。嵌段共聚物在不同的自组装状态下表现出白色、黄色和红色发光。

通过使用均匀的聚（1m-b-2n）纳米纤维作为种子，在种子生长过程中引入聚芴-嵌段-聚噻吩-嵌段-聚苯基异氰酸酯三嵌段聚合物作为单体，并调节聚苯基异氰酸酯嵌段的结构和自组装溶剂的极性，制备了a-b-a三嵌段胶束、多臂支化胶束和筏形胶束。

附：英文原文

Title: Precisely Prepared Hierarchical Micelles of Polyfluorene-block-Polythiophene-block-Poly(phenyl isocyanide) via Crystallization-Driven Self-Assembly

Author: Ya-Nan Pan, Chen-Chen Ye, Si-Lin Huang, Chao Wang, Man-Yi Han, Lei Xu

Issue&Volume: 2024-10-28

Abstract: The precise preparation of hierarchical micelles is a fundamental challenge in modern materials science and chemistry. Herein, poly(di-n-hexylfluorene)-block-poly(3-tetraethylene glycol thiophene) (poly(1m-b-2n)) diblock copolymers and polyfluorene-block-polythiophene-block-poly(phenyl isocyanide) triblock copolymers were synthesized using a one-pot process via the sequential addition of corresponding monomers using a Ni(II) complex as a single catalyst for living/controlled polymerization. The crystallization-driven self-assembly of amphiphilic conjugated poly(1m-b-2n) led to the formation of nanofibers with controlled lengths and narrow dispersity. The block copolymers exhibited white, yellow, and red emissions in different self-assembly states. By using uniform poly(1m-b-2n) nanofibers as seeds, introducing the polyfluorene-block-polythiophene-block-poly(phenyl isocyanide) triblock polymer as a unimer in the seed growth process, and adjusting the structure of the poly(phenyl isocyanide) block and the polarity of self-assembly solvent, A-B-A triblock micelles, multiarm branched micelles, and raft micelles were prepared.

DOI: 10.1002/anie.202418131

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202418131