Synthesis and characterization of half-salen complexes and their application in the polymerization of lactide and ε-caprolactone

文献情報

出版日 2014-09-10

DOI 10.1039/C4PY00734D

インパクトファクター 5.582

著者

Xuan Pang, Ranlong Duan, Xiang Li, Zhiqiang Sun, Han Zhang, Xianhong Wang, Xuesi Chen

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要旨

A series of half-salen ligands and their aluminum Al(III) complexes that contained different substituents were designed and synthesized. All the ligands and their complexes were characterized by 1H, 13C NMR and elemental analysis. The complexes can be used as catalysts to produce polylactide and poly-ε-caprolactone. All polymerizations were living with narrow molar mass distributions. The Mn(obsd) values of the isolated polymers were in good agreement with Mn(calcd). The polymerization rate of the electrophilic substituted complex was higher than the non-electrophilic substituted analogues. The more bulky substituents with more steric hindrance of the complexes showed relatively low polymerizing activity. The aluminum complexes showed a moderate stereo-selectivity to the ring opening polymerization of rac-lactide to give isotactic enriched polylactide.

掲載誌

Polymer Chemistry

CiteScore: 8.6

自己引用率: 7.3%

年間論文数: 457

Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.

Synthesis and characterization of half-salen complexes and their application in the polymerization of lactide and ε-caprolactone

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