期刊
POLYMER CHEMISTRY
卷 10, 期 41, 页码 5574-5577出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9py01262a
关键词
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资金
- National Nature Science Foundation of China [51673086]
- National First-class Discipline Program of Food Science and Technology [JUFSTR20180301]
- International Collaboration program ((MOE & SAFEA, 111 Project) [B13025]
A novel near-infrared (NIR) photoinitiating system for cationic polymerization using upconversion nanoparticles (UCNPs) and ferrocenium salts is reported. The UV-A and visible light emitted by the UCNPs upon NIR irradiation, absorbed by the ferrocenium salts, results in the liberation of aromatic ligand and thus the formed active Lewis acid can efficiently induce the cationic polymerization of oxirane and vinyl monomers. Notably, high post polymerization efficiency in dark (>30%) was observed which can compensate the limited upconversion fluorescence efficiency and lead to an improved and uniform conversion of the monomers.
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