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

• 作者: Qun Gao Kai Tu Haihui Li Lifen Zhang Zhenping Cheng
• 来源期刊: 中国科学：化学（英文版）
• 年，卷（期）: 2021,（7）
• 所属期刊栏目: ARTICLES
• 页码范围: 1242-1250
• 页数: 9页
• 语种: 英文

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 transfor-mation 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(λmax=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.