上转换纳米粒子和茂金属引发的近红外光致阳离子聚合。
Near-Infrared-Induced Cationic Polymerization Initiated by Using Upconverting Nanoparticles and Titanocene.
机构信息
International Research Center for Photoresponsive Molecules and Materials, Jiangnan University, Wuxi, Jiangsu, 214122, China.
Key Laboratory of Food Colloids and Biotechnology, School of Chemical & Materials Engineering, Jiangnan University, Wuxi, Jiangsu, 214122, China.
出版信息
Macromol Rapid Commun. 2019 May;40(9):e1900047. doi: 10.1002/marc.201900047. Epub 2019 Feb 28.
A new near-infrared (NIR)-sensitized photoinitiating system for free-radical-promoted cationic polymerization of oxirane and vinyl monomers such as cyclohexene oxide, and n-butyl vinyl ether (BVE), and N-vinyl carbazole (NVC) is described. A three-component photoinitiating system consists of upconverting nanoparticles (UCNPs), titanium-complex free radical photoinitiator (Irgacure 784, titanocene), and diphenyl iodonium hexafluorophosphate (Ph I PF ). Upon NIR laser irradiation at 980 nm, the radicals generated from titanocene by the visible light emitted by UCNP abstract hydrogen or add to the monomer, forming electron donor radicals that can be oxidized by iodonium salt to initiate cationic polymerization.
一种新型近红外（NIR）敏化光引发体系，用于促进环氧化物和乙烯基单体（如环氧环己烷、正丁基乙烯基醚（BVE）和 N-乙烯基咔唑（NVC））的自由基促进的阳离子聚合。该三组分光引发体系由上转换纳米粒子（UCNPs）、钛配合物自由基光引发剂（Irgacure 784、钛茂）和二苯基碘𬭩六氟磷酸盐（Ph IPF ）组成。在 980nm 的近红外激光照射下，UCNP 发出的可见光使钛茂产生自由基，这些自由基可以夺取氢原子或加成到单体上，形成电子给体自由基，该自由基可以被碘𬭩盐氧化，从而引发阳离子聚合。
Zotero 插件