Living ring-opening homo- and copolymerisation of epsilon-caprolactone and L-lactide by cyclic beta-ketiminato aluminium complexes

	Living ring-opening homo- and copolymerisation of epsilon-caprolactone and L-lactide by cyclic beta-ketiminato aluminium complexes
	Liu, Yan ; Dong, Wei-Shi ; Liu, Jing-Yu ; Li,Yue-Sheng
刊名	dalton transactions
	2014
卷号	43 期号:5 页码:2244-2251
关键词	CRYSTALLINE DIBLOCK COPOLYMERS SEQUENTIAL CRYSTALLIZATION BLOCK-COPOLYMERS AL COMPLEXES RAC-LACTIDE POLYMERIZATION LIGANDS CATALYST LACTONES ESTERS
通讯作者	liu,jy
英文摘要	a series of novel aluminium complexes containing cyclic beta-ketiminato ligands of type me2al{o-[(arn=chc4h4(c6h4))]} (3a, ar = 2,6-(pr2c6h3)-pr-i; 3b, ar = c6h5; 3c, ar = c6f5) have been prepared in high yields. these complexes were identified by h-1, c-13 nmr spectroscopy and elemental analysis. x-ray structural analyses for 3a-c revealed that these complexes have a distorted tetrahedral geometry around al, and both bond distances and bond angles were considerably influenced by the ligand structure. these complexes were tested as catalyst precursors for ring-opening polymerisation of epsilon-caprolactone (epsilon-cl) and l-lactide (l-la) in the presence of 2-propanol as an initiator. complex 3a could polymerize epsilon-cl in a controlled manner with high efficiency. based on the living characteristics, the preparation of well-defined block copolymers pcl-b-plla via sequential addition of monomers was performed by 3a. note that complex 3c exhibited rather high catalytic activity for the rop of l-la with narrow molecular weight distribution. the monomer conversion reached completion only in 4 h when the l-la/al molar ratio was 100 at 80 degrees c. plla-b-pcl copolymers were thus easily produced by 3c.
收录类别	SCI
语种	英语
公开日期	2015-10-27
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/57189]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Liu, Yan,Dong, Wei-Shi,Liu, Jing-Yu,et al. Living ring-opening homo- and copolymerisation of epsilon-caprolactone and L-lactide by cyclic beta-ketiminato aluminium complexes[J]. dalton transactions,2014,43(5):2244-2251.
APA	Liu, Yan,Dong, Wei-Shi,Liu, Jing-Yu,&Li,Yue-Sheng.(2014).Living ring-opening homo- and copolymerisation of epsilon-caprolactone and L-lactide by cyclic beta-ketiminato aluminium complexes.dalton transactions,43(5),2244-2251.
MLA	Liu, Yan,et al."Living ring-opening homo- and copolymerisation of epsilon-caprolactone and L-lactide by cyclic beta-ketiminato aluminium complexes".dalton transactions 43.5(2014):2244-2251.