Visible-light-induced controlled/living radical polymerization of styrene with a phenyl seleno group at one terminal chain end: 1-(Phenylseleno)ethyl benzene as a photoiniferter



The photopolymerization of styrene with a well-defined molecular architecture and a low polydispersity index and with methyl and phenylseleno ([BOND]SePh) groups at α- and ω-chain ends, respectively, was performed via a controlled/living radical polymerization with a new initiating system, 1-(phenylseleno)ethyl benzene/tert-butyl diphenyl (phenylseleno) silane, through the absorption of visible light at room temperature. A novel initiating living radical polymerization was examined. The yield and number-average molecular weight (Mn) of the resulting polymer increased with the reaction time. Furthermore, a linear relationship was found in a plot of Mn versus the polymer yield. These results indicated that this polymerization proceeded through a living radical mechanism. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 93: 348–355, 2004