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標題: 具吡唑酚基鋁錯合物之合成、鑑定及其對環酯類開環聚合反應之應用
Synthesis and Characterization of Aluminum Complexes Bearing Pyrazolyl-phenolate Ligands and their Application in Ring Opening Polymerization of Cyclic Esters
作者: 張又仁
Chang, Yu-Jen
關鍵字: ring-opening polymerization;開環聚合反應;PLA;Al complex;PCL;Biodegradable;polymer;聚乳酸交酯;鋁錯合物;聚己內酯;生物可分解性;聚合物
出版社: 化學系所
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The pyrazolyl-phenolate ligand precursors 52-59 have been prepared. Treatment of ligand precursors with 1.05 equiv. of AlMe3 affords aluminum complexes 60-67。All these compounds were characterized by NMR spectroscopy and elemental analysis. The molecular structures of complexes 60-63 and 65-66 were determined by single-crystal X-ray diffraction techniques. All of these aluminum complexes show catalytic activities for the ring opening polymerization of L-lactide and ε-caprolactone in the presence of benzyl alcohol with narrow PDIs. They also exhibit both “living” and “immortal” characters. Based on the 1H NMR spectrum for end group analysis of the polymer produced from complex 63 and cyclic esters, polymerization could be initiated by the benzyl alkoxide group in this system.
其他識別: U0005-1307201011200900
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