1 research outputs found
Benzoyl Phenyltelluride as Highly Reactive Visible-Light TERP-Reagent for Controlled Radical Polymerization
Benzoyl phenyltelluride (<b>BPT</b>) is a highly reactive
TERP-reagent for visible-light-induced (400β500 nm) controlled
radical polymerization. The compound can be easily prepared in one
step from diphenyl ditelluride and benzoyl chloride. It shows a strong
absorption at 407 nm that tails out to 473 nm and provides PDIs (1.2
to 1.3) among the lowest reported in literature for photoiniferters
in general, to which our compound was compared. PDIs obtained with <b>BPT</b> are much lower than those for benzyl dithiocarbamte (<b>BDC</b>) (1.7 to 1.8), which was used as a reference compound.
Choice of <b>BDC</b> as reference is based on its property as
UV-photoiniferter and on a similar initiation/control mechanism. However, <b>BDC</b> does not allow living radical polymerization under visible
light. The newly discovered compound <b>BPT</b> provides best
results with acrylamides and acrylates. Photoinitiation with styrene
was ineffective, and reaction with methacrylates is not considered
living