Lewis acid/base modulation in β-diiminate zinc-catalyzed switchable ring-opening polymerization of rac-lactide

被引：12

作者：

Zhang, Pan ^{[1
]}

Zhao, Minhui ^{[1
]}

Pang, Wenmin ^{[1
]}

Chen, Changle ^{[1
]}

机构：

[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Dept Polymer Sci & Engn, Chinese Acad Sci,Key Lab Soft Matter Chem, Hefei 230026, Anhui, Peoples R China

来源：

SCIENCE CHINA-CHEMISTRY | 2019年 / 62卷 / 04期

基金：

中国国家自然科学基金;

关键词：

ring-opening polymerization; beta-diimine; zinc catalysts; modulation; REDOX-CONTROLLED POLYMERIZATION; OLEFIN POLYMERIZATION; COORDINATION POLYMERIZATION; ETHYLENE POLYMERIZATION; PALLADIUM; COPOLYMERIZATION; ACID;

D O I：

10.1007/s11426-018-9414-3

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Two beta-diiminate zinc complexes were prepared and found to show high activity and well-controlled catalytic behavior in the ring-opening polymerization of rac-lactide. Coordination of the Lewis acid to the zinc complexes completely terminated the polymerization. The coordinated Lewis acid was easily cleaved by using a Lewis base, so that the polymerization could resume. Thus, switchable polymerization could be realized by the subsequent addition of a Lewis acid and a Lewis base. This work provides a new strategy to control the ring-opening polymerization of rac-lactide.

引用

页码：475 / 478

页数：4

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