Facile photochemical synthesis of main-chaintype semifluorinated alternating copolymers catalyzed by conventional amines or halide salts
Yuxue Wang, Kai Tu, Jiannan Cheng, Enjie He, Jinying Wang, Lifen Zhang *（张丽芬）and Zhenping Cheng *（程振平）
Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
Chem. Commun., 2021, 57, 11354--11357
In this work, we report a much simpler and low-cost method to prepare main-chain-type semifluorinated alternating copolymers by the formation of a halogen bond (XB) complex between α,ω-diiodoperfluoroalkanes and amines/halide salts. It is interesting that the terminal iodine functional group of the polymer chains is easily lost in the amine-promoted system, while the loss can be significantly reduced by adding a small amount of water. Importantly, the system promoted by halide salts can ensure complete retention of the iodine functional group. Overall, the establishment of this method provides a new strategy for designing smart fluoropolymer materials in a green and environmentally friendly facile manner under irradiation with visible light at room temperature.
链接：//pubs.rsc.org/en/content/articlelanding/2021/cc/d1cc04967d
