Zhu Wen, Li Zi, Zhao Youliang, Zhang Ke
State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, 100190, China.
Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China.
Macromol Rapid Commun. 2015 Nov;36(22):1987-93. doi: 10.1002/marc.201500367. Epub 2015 Aug 21.
Cyclic polymers with alternating monomer sequence are synthesized for the first time based on the ring-closure strategy. Well-defined telechelic alternating polymers are synthesized by reversible addition-fragmentation chain transfer polymerization by copolymerizing the electron acceptor monomer of N-benzylmaleimide and donor monomer of styrene with a feed ratio of 1 between them. The corresponding cyclic alternating polymers are then produced by the UV-induced Diels-Alder click reaction to ring-close the linear alternating polymer precursors under highly diluted reaction solution.
首次基于闭环策略合成了具有交替单体序列的环状聚合物。通过可逆加成-断裂链转移聚合，以1:1的进料比将N-苄基马来酰亚胺的电子受体单体与苯乙烯的供体单体共聚，合成了结构明确的遥爪交替聚合物。然后，通过紫外光诱导的狄尔斯-阿尔德点击反应，在高度稀释的反应溶液中使线性交替聚合物前体闭环，制备出相应的环状交替聚合物。
