摘要
Atom transfer radical polymerizations （ATRPs） of styrene （St） in bulk initiated by six iniferter reagents were carried out, respectively, in the present of copper （1） bromide （CuBr） and N, N,N＇,N＂,N＂-pentamethyldiethylenetriamine （PMDETA） at 115℃. All the kinetic plots were first-order with respect to the monomer concentrations. At the same time, the corresponding molecular weights of the polymers increased linearly with the respective monomer conversions. Furthermore, the molecular weight distributions remained relatively narrow （Mw/Mn〈1.50） in all cases. Solution ATRP of St in dimethyl- formamide （DMF） initiated by benzyl N, N-diethyldithiocarba- mate （BDC） also showed the characteristics of living radical polymerization. The results of 1H NMR analysis and chain extension experiment confirmed that the well-defined polystyrene （PS） bearing photo-liable group has been obtained via ATRP of St using photoiniferter reagents as the initiators.
基金
Acknowledgments： The work was supported by the National Nature Science Foundation of China （No. 20574050）, the Science and Technology Development Planning of Jiangsu Province （No. BK2007702 and BK2007048）, and the Nature Science Key Basic Research of Jiangsu Province for Higher Education （No. 05KJA15008）.
