Multicationic styrylpyridinium dyes as sensitizers in photoinitiating systems of TMPTA radical polymerization
Beata Jędrzejewska, Jolanta Kapela – Faculty of Chemical Technology and Engineering, University of Technology and Life Sciences, Bydgoszcz

Please cited as: CHEMIK 2011, 65, 4, 249-254

Multicationic styrylpyridinium dyes paired with n-butyltriphenylborate salt are shown to be effective photoinitiators of TMPTA polymerization. Mechanism of the photoinitiation involves n-butyl radicals formed from the heterolytic cleavage of carbon-boron bond that follows the electron transfer process. The capability of the salts to act as initiators for the polymerization of multifunctional monomer is documented.

Keywords: dye photoinitiators, organic borate salts, radical polymerization