The development of highly efficient monophosphonium photocatalysts for the visible light-regulated metal-free cationic polymerization of vinyl ethers. Issue 4 (4th January 2023)

• Record Type: Journal Article
• Authors: Chen, Jianxu; Lin, Junqiang; Yang, Zan; Wu, Yi; Liao, Saihu
• Is Part Of: Polymer chemistry. Volume 14:Issue 4(2023)
• Page Start: 486
• Page End: 491
• Publication Date: 2023-01-04
• Subjects: Polymers -- Periodicals; Macromolecules -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1039/d2py01493a
• Languages: English
• ISSNs: 1759-9954

Abstract

Abstract : Monophosphonium salts designed via P + -doping of benzo-anthracene have been identified as a new and highly efficient class of tunable photocatalysts for the visible light-regulated cationic RAFT polymerization of vinyl ethers. Abstract : A class of monophosphonium photocatalysts is developed via the assembly of phosphines and alkynes, and demonstrated as efficient organic photoredox catalysts for the visible light-mediated cationic reversible addition–fragmentation chain transfer (RAFT) polymerization of vinyl ethers. This organocatalytic process can be carried out at a low catalyst loading (5–20 ppm), affording metal-free and well-defined poly(vinyl ether)s with predictable molecular weight and narrow dispersity in short reaction times. Remarkably, these photocatalysts could regulate the chain-growth by light with a strict temporal control, and also allow a preliminary correlation between the structure/property of the catalysts and their catalytic performance.