期刊
POLYHEDRON
卷 30, 期 2, 页码 405-409出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.poly.2010.11.002
关键词
Polylactide; S-1-phenyl-N-(S-pyrrolidin-2-ylmethyl)ethanamine; Zinc complex; Ring opening polymerization; Heterotacticity
资金
- Ministry of the Education, Science, and Technology [2009-0075742]
- National Research Foundation of Korea [2009-0075742, 과06B1508] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
New dichloro zinc(II) complex ligated by the homochiral bidentate ligand S-1-phenyl-N-(S-pyrrolidin-2-ylmethyl)ethanamine (PPMA) was synthesized and characterized by X-ray crystallography. The geometry of the (PPMA)ZnCl2 is a distorted tetrahedron comprising of zinc metal as a center linked with two N atoms of the PPMA in a bidentate coordination mode along with two chloro ligands. The catalytic capacity of the complex was evaluated in ring opening polymerization (ROP) of rac-lactide. The active catalyst species was generated in situ by treating MeLi to complex (PPMA)ZnCl2. The dimethyl derivative of the (PPMA)ZnCl2 showed highly activity in ROP of rac-lactide and gave preference to heterotactic polylactide. (C) 2010 Elsevier Ltd. All rights reserved.
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