Designing Multicyclic Polymer Topologies by Electrostatic Macromolecular Self-Assembly and Covalent Fixation

根据一系列烷烃（C_nH_<2n+2>）、单环烷烃（C_nH_<2n>）和多环烷烃（C_nH_<2n -2>、C_nH_<2n-4>等）的构形异构，对非线性聚合物结构进行了系统的分类。通过“静电自组装共价固定”的策略，构建了各种拓扑结构独特的聚合物，如单环和多环聚合物、环远螺旋、环大单体和聚合物拓扑异构体。在此过程中，制备了具有中等应变环铵盐基团、携带多功能羧酸反阴离子的新型远旋聚合物前驱体。独特的静电自组装，特别是在稀溶液中形成，通过加热开环反应共价固定，高效率地产生多种非线性聚合物结构。

A systematic classification of nonlinear polymer architectures is formulated by reference to constitutional isomerism in a series of alkanes (C_nH_<2n+2>), monocycloalkanes (C_nH_<2n>) and polycycloalkanes (C_nH<2n-2>, C_nH_<2n-4>, etc). And a variety of topologically unique polymers, such as monocyclic and polycyclic polymers, cyclic telechelics (kyklo-telechelics), cyclic macromonomers and polymeric topological isomers have been constructed by means of an "electrostatic self-assembly and covalent fixation" strategy. In this process, new telechelic polymer precursors having moderately strained cyclic onium salt groups carrying multifunctional carboxylate counteranions have been prepared as key polymer precursors. The unique electrostatic self assembly, formed particularly in a dilute solution, was covalently fixed through the ring-opening reaction by heating, to produce a variety of nonlinear polymer architectures in high efficiency.