Bulk ring-opening polymerization (ROP) of L-lactide catalyzed by Ni(ii) and Ni(ii)-Sm(iii) complexes based on a salen-type schiff-base ligand
文献信息
发布日期
2010-12-22
DOI
10.1039/C0PY00385A
影响因子
5.582
作者
Guoqi Xiao, Bing Yan, Rui Ma, Wen Juan Jin, Xing Qiang Lü, Li Qin Ding, Chu Zeng, Lei Lei Chen, Feng Bao
查看原文
摘要
A monometallic (Ni2+, 1) and a bimetallic (Ni2+-Sm3+, 2) complexes based on the Salen-type Schiff-base ligand H22L (H22L = N,N′-bis(3-methoxysalicylidene)ethylene-1,2-diamine) were synthesized and characterized by FT-IR, ESI-MS and X-ray crystallography. The catalysis results showed that the two complexes with different active species, could efficiently catalyze the bulk solvent-free melt ring-opening polymerization (ROP) of L-lactide with moderate molecular weights and narrow molecular weight distributions. Especially, for the bimetallic complex 2, the involvement of rare ions effectively passivated the catalytic behavior on the ROP of L-lactide, while was in favor of the increase of polymeric molecular weights (Mn) and the polymerization controllability.
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来源期刊
Polymer Chemistry
CiteScore:
8.6
自引率:
7.3%
年发文量:
457
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