Scalable, Green Chain Transfer Agent for Cationic RAFT Polymerizations  

作　　者：Scott W.Spring Chloe S.Cerione Jesse H.Hsu Shelby L.Shankel Brett P.Fors 

机构地区：[1]Department of Chemistry and Chemical Biology,Cornell University,Ithaca,New York,14853 United States

出　　处：《Chinese Journal of Chemistry》2023年第4期399-404,共6页中国化学（英文版）

基　　金：This material is based upon work supported by the National Science Foundation Graduate Research Fellowship Program under Grant No.DGE-1650441;This work was supported by the National Science Foundation Center for Sustainable Polymers at the University of Minnesota,a Center for Chemical Innovation(CHE-1901635);This work made use of the NMR Facility at Cornell University that is supported,in part,by the NSF under the award number CHE-1531632.

摘　　要：Cationic polymerizations of vinyl ethers have gained recent attention due to their ability to produce robust,biorenewable materials.These developments have been largely enabled by the advent of cationic reversible addition−fragmentation chain-transfer(RAFT)polymerization;however,the scalability and sustainability of this method are hindered by current chain-transfer agents(CTAs),which exist as viscous,colored oils requiring complex syntheses and solvent-intensive purification.Herein,we produce a solid,colorless CTA through a green synthetic route in 83%yield on a 50-gram scale.We investigate the utility of this CTA in chemical,electrochemical,photochemical,and acid-initiated methods,revealing that it achieves efficient polymerization with excellent control over molecular weight,low dispersity values,high chain end fidelity,and temporal control in cationic RAFT polymerizations.

关 键 词：Vinyl ethers CTA Cationic polymerization Green RAFT 

分 类 号：O62[理学—有机化学]