He and his colleagues developed a three-component system that quickly triggers the solidification of a liquid acrylic resin when excited by visible light. The first component, a photoredox catalyst, absorbs light energy, which kicks its electrons to a higher energy state. The other two components are an iodonium and a borate, which accept and donate electrons from the catalyst, respectively, converting both into radicals that trigger polymerization.
by Prachi Patel, special to C&EN |
September 16, 2020