Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/16852
標題: 具吡唑吲哚配位基鎂或鋅錯化合物之合成、鑑定及其對左旋乳酸交酯進行開環聚合反應之應用
Synthesis and Characterization of Magnesium or Zinc Complexes Bearing Pyrazolyl-indolate Ligands and their Application in Ring Opening Polymerization of L-Lactide
作者: 林登濠
Lin, Deng-Hao
關鍵字: pyrazole;吡唑;indole;magnesium;zinc;L-lactide;ring opening polymerization;吲哚鎂;鋅;左旋乳酸交酯;開環聚合反應
出版社: 化學系所
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摘要: 
合成一系列吡唑吲哚配位基前驅物PzHIndH、PzMeIndH、PztBuIndH及PzPhIndH,與二丁基鎂或二乙基鋅試劑反應,可以成功合成錯合物29-36,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29的分子結構。在9-蒽甲醇的存在下,錯合物29-36對於左旋乳酸交酯進行開環聚合催化反應,皆顯示具有催化活性展現,以鎂錯化合物29-32具有較佳的催化活性,並具有living以及immortal的性質,鋅錯化合物33-36則具有較佳的分子量控制性。由錯化合物32催化合成之聚酯類,其氫光譜末端鑑定顯示為9-蒽甲氧基,推測在聚合反應中是以9-蒽甲醇作為起始基進行反應。

A series of pyrazolyl-indolate ligand precursors have been synthesized. Treatment of ligand precursors with MgnBu2 or ZnEt2 affords complexes 29-36。All these compounds were characterized by NMR spectroscopy and elemental analysis. The molecular structure of complex 29 was determined by single-crystal X-ray diffraction techniques. All of these complexes show catalytic activities toward the ring opening polymerization of L-lactide in the presence of 9-anthracenemethanol. The magnesium complexes 29-32 show better catalytic activities, and also exhibit both “living” and “immortal” characters. The zinc complexes 33-36 show better molecular weight distribution. Based on the 1H NMR spectrum for end group analysis of the polymer produced from complex 32 and cyclic esters, polymerization could be initiated by 9-anthracenemethanol in this system.
URI: http://hdl.handle.net/11455/16852
其他識別: U0005-0907201209561900
Appears in Collections:化學系所

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