Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/16843
標題: Zinc Complexes Containing Anilido-imidazolinate Ligands, Synthesis, Characterization and Application in Ring-Opening Polymerization of L-lactide
含有咪唑啉苯胺基鋅金屬錯合物之合成、鑑定及其對左旋乳酸交酯開環聚合反應之應用
作者: 王又立
Wang, Yu-Li
關鍵字: Zinc;鋅;Ring-Opening Polymerization;開環聚合反應
出版社: 化學系所
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摘要: 
我們成功製備咪唑啉苯胺基前驅物HNPhIm、HNPhTriMeIm、HNPhDiiPrIm、HNPhSMeIm、HNPhOMeIm、HNPhNMe2Im,並利用一系列配位基前驅物分別與0.6和1.4當量的二乙基鋅試劑反應,可以成功合成單核雙取代鋅金屬錯合物42,和單核單取代乙基鋅金屬43-46,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44-46的分子結構。在苯甲醇的存在下,錯合物42-46對於左旋乳酸交酯進行開環聚合反應,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46催化合成之左旋乳酸交酯聚合物,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 Anilido-imidazolinate ligand precursors HNPhIm、HNPhTriMeIm、HNPhDiiPrIm、HNPhSMeIm、HNPhOMeIm、HNPhNMe2Im have been prepared. Treatment of ligand precursors with 0.6 or 1.4 equiv. of ZnEt2 affords zinc complexes 42-46。All these compounds were characterized by NMR spectroscopy and elemental analysis. The molecular structures of complexes 44-46 were determined by single-crystal X-ray diffraction techniques. All of these znic complexes show catalytic activities for the ring opening polymerization of L-lactide 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 46 and cyclic esters, polymerization could be initiated by the benzyl alkoxide group in this system.
URI: http://hdl.handle.net/11455/16843
其他識別: U0005-0507201216370500
Appears in Collections:化學系所

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