A novel reversible-deactivation radical polymerization strategy via near-infrared light-controlled photothermal conversion dividing wall-type heat exchanger

查看全文 作　　者：Qun [1]Gao;Kai [1]Tu;Haihui [1]Li;Lifen [1]Zhang;Zhenping [1]Cheng 机构地区：[1]State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials,Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis,College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,China 出　　处：《Science China Chemistry》索引2021年第64卷第7期,共9页 基　　金：supported by the National Natural Science Foundation of China(21774082,21871201);the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)。 摘　　要：As an effective means of utilizing light energy,photothermal conversion has excellent application in the field of polymerization.Herein,a dividing wall-type heat exchanger with the aid of photothermal conversion was designed to conduct polymerization under irradiation with near-infrared(NIR)light by utilizing the ketocyanine-type dye solution as the highly efficient activator(>83.2%photothermal conversion efficiency).Various types of reversible-deactivation radical polymerization(RDRP)methods,including reversible addition-fragmentation chain transfer,atom transfer radical polymerization,and bromine-iodine transformation RDRP,are suitable for this strategy.Well-defined polymers with excellent control over molar mass and molar mass dispersity(D<1.28)were thus synthesized within a few hours under NIR(λ_(max)=810 nm,850 nm)irradiation at room temperature.Importantly,in addition to conventional heating methods(such as electrical heating jackets),the designed dividing wall-type heat exchanger via NIR light activation has another unique advantage:it can enhance the polymerization by the synergistic effect of both heating and NIR light irradiation due to the deeper penetration of NIR light. 关 键 词：near-infrared light photothermal conversion ketocyanine dye reversible-deactivation radical polymerization dividing wall-type heat exchange