Hexaarylbisimidazoles and ketocyanine dyes as effective lectron transfer photoinitiating systems

M. Bendyk; B. Jędrzejewska; J. Pączkowski; L. A. Linden

Published : 2022-09-18

Vol. 47 No. 9 (2002)

Hexaarylbisimidazoles and ketocyanine dyes as effective lectron transfer photoinitiating systems

M. Bendyk B. Jędrzejewska J. Pączkowski L. A. Linden

Abstract

Four different hexaarylbisimidazoles (HABIs) and 5 ketocyanine yes (JAWs) have been synthetized. Chemical structures and asic spectroscopic properties of JAWs obtained have been haracterized. Free energy changes (DeltaG(el)) of the process f electron transfer between HABIs and JAWs tested have been experimentally determined for 20 pairs of HABI + JAW. The dependence of the rate of 1,1,1-tri(acryloxymethyl)propane photopolymerization, initiated with HABI + JAW systems in the presence of mercaptobenzoxazole, on the DeltaG(el) value and on the radiation wavelength (488 nm and 355 nm or 365 nm, Fig. 1) has been determined. It was found that chemical structures of HABI and JAW do not affect considerably the rate of polymerization.

Keywords

fotoinicjatory ; mechanizm przeniesienia elektronu ; układy heksaarylobisimidazol barwnik ketocyjaninowy ; fotopolimeryzacja ; 1,1,1-tris(akryloksymetylo)propan photoinitiators ; electron transfe ; mechanism ; exaarylbisimidazole plus ketocyanine dye systems ; hotopolymerization ; 1;1;1-tri(acryloxymethyl)propane

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Hexaarylbisimidazoles and ketocyanine dyes as effective lectron transfer photoinitiating systems

Abstract

Keywords

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