Simple is best: Diamine zinc complexes as unexpected catalysts in lactide polymerisation

被引:23
作者
Eckert, Prisca K. [1 ]
Vieira, Ines dos Santos [1 ]
Gessner, Viktoria H. [2 ]
Boerner, Janna [3 ]
Strohmann, Carsten [1 ]
Herres-Pawlis, Sonja [1 ]
机构
[1] Tech Univ Dortmund, Fak Chem, D-44227 Dortmund, Germany
[2] Univ Wurzburg, Inst Anorgan Chem, D-97074 Wurzburg, Germany
[3] MIT, Dept Chem, Cambridge, MA 02139 USA
关键词
Biodegradable Polymers; Amines; Zinc; Ring-opening polymerisation; Coordination compounds; RING-OPENING POLYMERIZATION; SINGLE-SITE CATALYSTS; COORDINATION CHEMISTRY; BIODEGRADABLE POLYMERS; MAGNESIUM; INITIATORS; ALKOXIDE; TRANS-1,2-DIAMINOCYCLOHEXANE;
D O I
10.1016/j.poly.2012.09.012
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A series of monomeric coordination compounds containing zinc(II) chloride or zinc(II) bromide and the 1,2-diamine ligands TMEDA, TEEDA, (R,R)-TMCDA, (R,R)-TECDA and cis-TMCDA have been synthesised and structurally characterised using X-ray diffraction analysis. All but one complex could be successfully used as initiators for the solvent-free ring-opening polymerisation of D,L-lactide. In particular, the polylactide (PLA) prepared with compounds containing (R,R)-TECDA is obtainable in high yields with molecular weights suitable for industrial applications. Thus a class of stable, easy to synthesise and efficient PLA catalysts with neutral ligands is introduced. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:151 / 157
页数:7
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