文献类型：期刊文献

英文题名：Acid-catalyzed Disulfide-mediated Reversible Polymerization for Recyclable Dynamic Covalent Materials

作者：Wang, Bang-Sen[1,2];Zhang, Qi[1,2];Wang, Zhi-Qiang[1,3,4];Shi, Chen-Yu[1,2];Gong, Xue-Qing[1,3,4];Tian, He[1,2];Qu, Da-Hui[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Inst Fine Chem, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem,Sch Che, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Ctr Computat Chem,Joint Int Res Lab Precis Chem &, 130 Meilong Rd, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Res Inst Ind Catalysis, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2023

卷号：62

期号：11

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20230413442914);WOS:【SCI-EXPANDED(收录号:WOS:000919956100001)】；

基金：This work was supported by the National Natural Science Foundation of China (grant nos. 22025503, 22220102004), Shanghai Municipal Science and Technology Major Project (grant no. 2018SHZDZX03), the Fundamental Research Funds for the Central Universities, the Programme of Introducing Talents of Discipline to Universities (grant no. B16017), Science and Technology Commission of Shanghai Municipality (grant no. 21JC1401700), and the Starry Night Science Fund of Zhejiang University Shanghai Institute for Advanced Study (grant no. SN-ZJU-SIAS-006). The authors thank Prof. Dr. Ben L. Feringa for fruitful discussion and constructive suggestions. The authors thank the Research Center of Analysis and Test of East China University of Science and Technology for help on the material characterization.

语种：英文

外文关键词：Cationic Polymerization; Chemical Recyclability; Dynamic Chemistry; Poly(Disulfide)S

摘要：Poly(1,2-dithiolane)s are a family of intrinsically recyclable polymers due to their dynamic covalent disulfide linkages. Despite the common use of thiolate-initiated anionic ring-opening polymerization (ROP) under basic condition, cationic ROP is still not exploited. Here we report that disulfide bond can act as a proton acceptor, being protonated by acids to form sulfonium cations, which can efficiently initiate the ROP of 1,2-dithiolanes and result in high-molecular-weight (over 1000 kDa) poly(disulfide)s. The reaction can be triggered by adding catalytic amounts of acids and non-coordinating anion salts, and completed in few minutes at room temperature. The acidic conditions allow the applicability for acidic monomers. Importantly, the reaction condition can be under open air without inert protection, enabling the nearly quantitative chemical recycling from bulk materials to original monomers.