Title

鎂、鋅、鋁錯合物的合成、解析及其在乳酸交酯及環己內酯開環聚合反應的應用

Translated Titles

Synthesis, Characterization and Catalytic Studies of Magnesium, Zinc and Aluminium Complexes : Their Application in the Ring-Opening Polymerization of Lactides and ε-Caprolactone

DOI

10.6845/NCHU.2008.00400

Authors

張啟明

Key Words

乳酸交酯 ; Lactides

PublicationName

中興大學化學系所學位論文

Volume or Term/Year and Month of Publication

2008年

Academic Degree Category

碩士

Advisor

林助傑

Content Language

繁體中文

Chinese Abstract

合成大立障取代基修飾的雙酚配位基及具掌性中心不對稱的大立障的Schiff base 配位基,分別與烷基鎂、鋅或鋁反應形成金屬錯合物[EDBP(MesTs)MgnBu]2 (1)、{[EDBP(MesTs)]2Mg} (2)、{[EDBP(MesTs)Mg[μ-OC(=CH2)-2, 4, 6- Me3C6H2]}2 (3)、{[EDBP(Ts)]2AlMe} (4)、{[EDBP(MesTs)]AlMe2} (5)、[(CDTS)Zn]2 (6)、[(CDTS-H)ZnOiPr] (7)、[(CDTS-H)MgOiPr]2 (8)和[(CDTS)AlMe] (9)。 實驗顯示鎂錯合物2、8與鋅錯合物7對左旋乳酸交酯的開環聚合反應有很好的效果。鋁錯合物4和5對環己內酯的開環聚合反應亦有很好的效果,所得到的聚合物分子量可控制且維持狹窄的分子量分佈度。其中鎂錯合物2具有很好的催化活性,在0 oC下以二氯甲烷當溶劑,反應僅需6分鐘就能完成,且具有”immortal”的性質。

English Abstract

A monocharged O,O’-ligand, EDBP-H(MesTs) and a NNO-Schiff base ligand have been designed and their n-butyl magnesium complex{[EDBP(MesTs)]MgnBu}2 (1), magnesium phenolate complex {[EDBP(MesTs)]2Mg} (2), magnesium alkoxy complexes {[EDBP(MesTs)Mg[μ-OC(=CH2)-2, 4, 6- Me3C6H2]}2 (3) and [(CDTS-H)MgOiPr]2 (8), zinc complexes [CDTSZn]2 (6) and [(CDTS-H)ZnOiPr] (7) and aluminium complexes {[EDBP(TS)]2AlMe} (4), {[EDBP(MesTS)]AlMe2} (5) and [CDTSAlMe] (9) have been prepared. Their activities toward the ring-opening polymerization of L-lactide and ε-caprolactone have been investigated. Experimental results show that complexes efficiently catalyze the polymerization of cyclicester in a controlled fashion, yielding polymers with narrow polydispersity indexes in a wide range of monomer-to-initiator ratios. Among them, complex 2 is very active toward ROP of L-lactide with the conversion >99% within 6 min at 0 oC.

Topic Category 基礎與應用科學 > 化學
理學院 > 化學系所
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