Topological polymer chemistry for designing multicyclic macromolecular architectures
Topological polymer chemistry for designing multicyclic macromolecular architectures
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DOI：
10.1038/pj.2012.92
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发表时间：
2012-12
期刊：
影响因子：
2.8
通讯作者：
Y. Tezuka
中科院分区：
文献类型：
--
作者：
Y. Tezuka
综述了拓扑聚合物化学的几何概念和当前的合成挑战。基于高分子链拓扑的系统分类和异构化性质，各种新颖的多环大分子结构已经被合理地设计出来，并随后通过有趣的合成方案得以实现。特别是，通过远程螺旋前体的静电聚合物自组装和随后的共价转化(静电自组装和共价固定(ESA-CF)过程)，有效地产生环和多环聚合物产品，所述远程螺旋前体含有伴随多官能团的羧酸盐反阴离子的环铵盐基，并且随后通过开环或通过羧酸盐反阴离子的环铵盐基的出环反应进行共价转化。此外，ESA-CF过程与有效的连接/裂解化学(包括歧化缩合(CLIP)和炔叠加成(CLICK)反应)相结合，已被证明是一种前所未有的多环大分子拓扑的新合成方案。
The geometrical conception and current synthetic challenges of topological polymer chemistry have been reviewed. On the basis of the systematic classification and isomeric properties of polymer chain topologies, a variety of novel multicyclic macromolecular constructions have now been rationally designed and subsequently realized by intriguing synthetic protocols. In particular, cyclic and multicyclic polymer products are effectively produced by an electrostatic polymer self-assembly of telechelic precursors that contain cyclic ammonium salt groups accompanying polyfunctional carboxylate counteranions and the subsequent covalent conversion through the ring-opening or through the ring-emitting reaction of the cyclic ammonium salt groups by carboxylate counteranions (Electrostatic Self-assembly and Covalent Fixation (ESA-CF) process). Furthermore, the ESA-CF process, in conjunction with effective linking/cleaving chemistry (including the metathesis condensation (clip) and alkyne-azide addition (click) reactions), has been demonstrated as a new synthetic protocol for unprecedented multicyclic macromolecular topologies.