Hsuan-Ying Chen, Wei-Yi Lu, Yen-Jen Chen, Sodio C. N. Hsu, Siou-Wei Ou, Wei-Te Peng, Nai-Yuan Jheng, Yi-Chun Lai, Bo-Sheng Wu, Hsuan Chung, Yun Chen and Ta-Chou Huang Synthesis, characterization, and catalytic activity of titanium iminophenoxide complexes in relation to the ring-opening polymerization of L-lactide and ε-caprolactone Journal of Polymer Science Part A: Polymer Chemistry 51
Version of Record online: 12 OCT 2012 | DOI: 10.1002/pola.26381
Titanium complexes with various iminophenolate ligands were synthesized and their suitability as catalysts for the ring-opening polymerization of L-lactide and ε-caprolactone were investigated. Complexes with bidentate ligands demonstrate higher catalytic activity than their tridentate counterparts and the differences in the geometric framework of bidentate ligands also influence the catalytic activity. Type II ligands formblocks in more positions which increases their effectiveness in preventing the coordination of monomers to Ti thereby decreasing the initiation rate.
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