Aj. Maroulis et al., PHOTOPOLYMERIZATION OF METHYL-METHACRYLATE USING (N,N-BIS-BENZOYLAMINO)-4,5-DIPHENYL-1,2,3-TRIAZOLE AS PHOTOINITIATOR, Pure and applied chemistry, A31(4), 1994, pp. 487-494
(N,N-Bis-benzoylamino)-4,5-diphenyl-1,2,3-triazole (1) was used as the
photoinitiator for the polymerization of methyl methacrylate in bulk
and in solution. Polymerization in bulk follows the usual free-radical
kinetics. The initiation is believed to occur via hydrogen abstractio
n from monomer or solvent caused by the excited state of 1. Polymeriza
tion was found to be remarkably enhanced by the addition of a small am
ount of triethylamine. This was attributed to the formation of an elec
tron transfer complex between photoactivated 1 and a ground-state amin
e.