α-二亚胺后过渡金属配合物在烯烃聚合中的应用研究进展

Application research progress of α-diimine ligands late transition metal coordination complex for olefin polymerization

介绍了α-二亚胺配体后过渡金属烯烃聚合催化剂的研究进展,对此类催化剂因改变配体空间位阻、改变配体取代基电子效应而对催化活性、相对分子质量、分子结构的影响进行了综述。三联苯基配体催化剂兼具高活性和高稳定性,刚性环和轴向给电子基团有机结合的α-二亚胺配体后过渡金属催化剂具有高活性、产物高相对分子质量、高线型、低支化度的特点,为新型催化剂的制备以及新型材料的合成提供了新思路。

Recent development in the research of complexes of α-diimine ligands and late transition metal as catalysts for olefin polymerization is introduced.The influence of factors such as substituents,steric hinderence and electronic effect on the catalytic acitivities,molecular weight of the polymer and structure of polymer is summarized.The terphenyl substituted-α-diimine ligands catalysts exhibit both high activity and high thermostability.By using complexes of late transition metal combined with rigidity rings and axial donating α-diimine ligands,polymers with high molecular weight,high linearity but low branching densities are obtained,which provides a new strategy for the design and preparation of novel catalysts.