期刊
POLYMER CHEMISTRY
卷 6, 期 35, 页码 6372-6377出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5py01040c
关键词
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资金
- National Natural Science Foundation of China [51373046, 51473045, 21301118]
- Natural Science Foundation of Hebei Province [B2014202013]
- High-level Excellent Talents in University of Hebei Province
- Innovation Program of Shanghai Municipal Education Commission [15ZZ096]
Four new homogeneous chromium complexes with [OSSO]-type bis(phenolato) dianionic ligand catalysts for the ring-opening copolymerization of phthalic anhydride (PA) and epoxides are reported. Through the structure design, the ligand with a cyclohexylene ring backbone of the chromium complexes is quite beneficial to improving the activity. Of all the cocatalysts employed, DMAP is found to be the most efficient. H-1 NMR spectra of the copolymers confirmed the alternating microstructures. This is the first example of a well-defined metal complex with a soft Lewis base as donor for the efficient copolymerization of anhydride and epoxides. Additionally, we demonstrate that poly(4-VCHO-alt-PA) can be conveniently functionalized using a robust free-radical mediated thiol-ene reaction of the pendant vinyl groups.
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