Abstract

This review highlights the ongoing developments on the ring-opening polymerization (ROP) of lactide (LA) and caprolactone (CL) using mononuclear and dinuclear β-diketiminate- and β-ketoiminate-substituted metal complexes. The resulting aliphatic polyesters are of great interest as sustainable replacements to petrochemicals-based polymers with potential applications in tissue engineering, bio-medical, and agricultural sciences. β-Diketiminate and β-ketoiminate metal complexes are very promising ROP catalysts since their steric and electronic properties, and hence their catalytic activity and selectivity can be easily modified. This review compares different classes of β-diketiminate and β-ketoiminate complexes with respect to the controlled synthesis of homopolymers and copolymers of aliphatic polyesters and elaborates on the polymerization kinetics and mechanistic studies.

摘要

本综述重点介绍了使用单核和双核β-二酮亚胺酸和β-酮亚胺酯取代的金属络合物进行丙交酯 (LA) 和己内酯 (CL) 开环聚合 (ROP) 的持续发展。由此产生的脂肪族聚酯作为石化聚合物的可持续替代品，在组织工程、生物医学和农业科学领域具有潜在的应用前景，因此备受关注。β-二酮亚胺盐和β-酮亚胺盐金属配合物是非常有前途的 ROP 催化剂，因为它们具有空间和电子性质，因此它们的催化活性和选择性可以很容易地改变。这篇综述比较了不同类别的β-二酮亚胺和β-关于脂肪族聚酯的均聚物和共聚物的受控合成的酮亚胺络合物，并详细阐述了聚合动力学和机理研究。