Stereoselective Ring-Opening Polymerization of rac-Lactides Catalyzed by Aluminum Hemi-Salen Complexes

	Stereoselective Ring-Opening Polymerization of rac-Lactides Catalyzed by Aluminum Hemi-Salen Complexes
	Gao B ; Duan RL ; Pang X ; Li X ; Qu Z ; Tang ZH ; Zhuang XL ; Chen XS
刊名	organometallics
	2013
卷号	32 期号:19 页码:5435-5444
关键词	CYCLIC ESTER POLYMERIZATION RACEMIC LACTIDE EPSILON-CAPROLACTONE RENEWABLE RESOURCES INITIATOR SYSTEM LIGAND SYNTHESIS BASE COMPLEX ZINC MECHANISM REACTIVITY
ISSN号	0276-7333
通讯作者	pang x
中文摘要	a series of unreported aluminum complexes supported by asymmetrically o,n,n,o-quadridentate hemi-salen ligands were synthesized by binaphthyl-imine derivatives. these complexes were characterized and used as catalysts in rac-lactide or l-lactide polymerization. the x-ray diffraction analysis showed that molecular structures of (s)-3 and (rac)-4 were mononuclear coordination compounds with five-coordinated aluminum atoms in the solid state. using 2-propanol as cocatalyst, complex (s)-6 revealed the highest activity among these aluminum coordination compounds toward the ring-opening polymerization of l-lactide, and complex (s)-2 displayed the highest stereospecificity for the ring-opening polymerization of rac-lactide, affording partially isotactic polylactide with a p-m of 0.64. the polymerization kinetics using (s)-6 as a catalyst were investigated at great lengths. the kinetics of the polymerization consequences proved that the polymerization was first-order in monomer as well as catalyst. there was a linear dependence between the rac-lactide conversion and the number-average molecular weight of the macromolecules. the pdi values of these macromolecules were in a narrow range (1.04-1.09).
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000326122600029
公开日期	2014-04-15
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/49541]
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	Gao B,Duan RL,Pang X,et al. Stereoselective Ring-Opening Polymerization of rac-Lactides Catalyzed by Aluminum Hemi-Salen Complexes[J]. organometallics,2013,32(19):5435-5444.
APA	Gao B.,Duan RL.,Pang X.,Li X.,Qu Z.,...&Chen XS.(2013).Stereoselective Ring-Opening Polymerization of rac-Lactides Catalyzed by Aluminum Hemi-Salen Complexes.organometallics,32(19),5435-5444.
MLA	Gao B,et al."Stereoselective Ring-Opening Polymerization of rac-Lactides Catalyzed by Aluminum Hemi-Salen Complexes".organometallics 32.19(2013):5435-5444.