Xiaowu Jiang , Lifen Zhang *（张丽芬）, Zhenping Cheng * （程振平）, Xiulin Zhu
Suzhou key Laboratory of Macromolecular Design and Precision Synthesis， Jiangsu Key Laboratory of Advanced Functional Polymer
Design and Application， Department of Polymer Science and Engineering College of Chemistry Chemical Engineering and Materials Science，Soochow University，Suzhou 215123 , China
Macromol. Rapid Commun. 2016, 37, 1337−1343
Photoinduced initiators for continuous activator regeneration atom transfer radical polymeri-zation (ATRP) of hydrophilic monomers in heptane/ethanol latent-biphasic system for copper catalyst separation and recycling have been realized for the first time at room temperature with different wavelengths of visible light LED (green, blue, purple, and white LED) as external stimulus, using 2-bromophenylacetate as the ATRP initiator and camphorquinone/triethyl- amine as the photoinitiator. In this system, hybrid catalyst complex (HCc) is synthesized as a novel nonpolar catalyst, which is preferentially dissolved in heptane. The hydrophilic polymers obtained catalyzed by HCc in heptane/ethanol mixture solvent show typical “living” features, for example, the values of Mn,GPC increase linearly with monomer conversion up to quan- titative level (>96%) and the molecular weight distributions were kept narrow (Mw/Mn < 1.20) throughout the polymerization process. It should be
noted that the excellent controllability of this novel polymerization system can be achieved even after 5 catalyst recycling experiments under LED irradiation.
链接：http://onlinelibrary.wiley.com/doi/10.1002/marc.201600215/epdf