3-Ketoquinolones as new photoinitiators for free radical photopolymerization under LED. Issue 18 (14th April 2022)

• Record Type: Journal Article
• Authors: Morone, Marika; Postle, Stephen; Razzano, Vincenzo; Deguines, Charles; Allonas, X.
• Is Part Of: Polymer chemistry. Volume 13:Issue 18(2022)
• Page Start: 2659
• Page End: 2664
• Publication Date: 2022-04-14
• Subjects: Polymers -- Periodicals; Macromolecules -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1039/d2py00058j
• Languages: English
• ISSNs: 1759-9954

Abstract

Abstract : 3-Ketoquinolones are efficient Type II photoinitiators for free radical photopolymerization. Abstract : A new class of photoinitiators for free radical photopolymerization based on 3-ketoquinolone chromophoric group is presented. Spectroscopic properties, quantum yield in triplet state and efficiency in formation of initiating radicals were measured. Photopolymerization experiments show that 3-ketoquinolones are effective photoinitiators for LED curing. Additional properties such as yellowing of cured films are also measured. These compounds appear to be interesting alternative to conventional type II photoinitiators.