Organotellurium-mediated living radical polymerization under photoirradiation by a low-intensity light-emitting diode.
A low-intensity (6 W) light-emitting diode (LED) effectively activated an organotellurium chain transfer agent and the dormant species, promoting well-controlled radical polymerization. The use of the LED provided many advantages over the previously reported high-intensity Hg lamp, including high energy efficiency during the polymerization, and easy availability of the low-cost light source. Structurally well-defined poly(methyl methacrylate), poly(methyl acrylate), and polystyrene, with narrow molecular weight distributions, were synthesized under LED irradiation with or without a neutral density filter.
Institute for Chemical Research, Kyoto University, Gokasyo, Uji, Kyoto 611-0011, Japan, and Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency (JST).
Yasuyuki
Y
Nakamura
Shigeru
S
Yamago
free radical; light-emitting diode; living radical polymerization; organotellurium compound; photopolymerization; tellurium; visible light