Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/16801
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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摘要: 
我們成功製備吡唑酚基前驅物52-59,並利用配位基前驅物52-59和1.05當量的三甲基鋁試劑反應,可以成功合成錯合物60-67,並利用核磁共振光譜以及元素分析數據進行鑑定。經由X-光單晶繞射儀之數據確認了錯合物60-63以及65-66的分子結構。在苯甲醇的存在下,錯合物60-67對於左旋乳酸交酯以及環己內酯的開環聚合反應,皆有良好的活性以及狹窄的PDIs數值,並具有Living以及Immortal的性質。由錯合物63催化合成之聚酯類,其氫光譜末端鑑定顯示,在聚合反應中是以苯甲氧基作為起始基進行反應。

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.
URI: http://hdl.handle.net/11455/16801
其他識別: U0005-1307201011200900
Appears in Collections:化學系所

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