期刊
JOURNAL OF POLYMER RESEARCH
卷 27, 期 1, 页码 -出版社
SPRINGER
DOI: 10.1007/s10965-019-1979-y
关键词
Conjugated polymer; Carbon-carbon coupling; Palladium-catalyzed polymerization; Bidentate phosphine palladium complex; Heterogeneous catalysis
资金
- National Natural Science Foundation of China [21664008]
- Natural Science Foundation of Jiangxi Province of China [20172BAB203015]
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education [KLFS-KF-201704]
Conjugated polymers are usually synthesized by homogeneous palladium complexes-catalyzed Heck, Suzuki, and Stille coupling reactions, which suffer from the non- recyclability of expensive palladium catalysts and palladium contamination of the desired polymer due to palladium leaching. In order to overcome these drawbacks, a bidentate phosphino-modified magnetic nanoparticles-anchored palladium complex (PdCl2-Fe3O4@SiO2-2P) as a clean and efficient heterogeneous catalyst for the carbon-carbon coupling polycondensations was developed in present work. The PdCl2-Fe3O4@SiO2-2P catalyst exhibited an enhanced catalytic activity for Heck, Suzuki, and Stille coupling polymerizations, as compared with the most commonly used homogeneous Pd(PPh3)(4). Moreover, this heterogeneous palladium catalyst showed advantage of much less palladium impurity (below 13 ppm) in the isolated polymers. Importantly, PdCl2-Fe3O4@SiO2-2P can facilely be separated from the reaction products and recovered by using an external magnetic field, and recycled at least eight times with almost consistent catalytic activity.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据