| Syntheses and structures of tetranuclear Zn（Ⅱ） complexes with in situ generated macrocyclic Schiff base ligands:Applications in Zn2+ sensing |
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| 作者姓名： | Cai-Xia Ding Chang-Hua He Yong-Shu Xie |
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| 作者单位： | Shanghai Key Laboratory of Functional Materials Chemistry,East China University of Science and Technology |
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| 基金项目： | financially supported by NSFC,the Program for Professor of Special Appointment(Eastern Scholar) at Shanghai Institutions of Higher Learning,Program for New Century Excellent Talents in University(No.NCET-11-0638);Innovation Program of Shanghai Municipal Education Commission,the Fundamental Research Funds for the Central Universities(No.WK1013002);SRFDP(No.20100074110015);S.W.Ng is grateful for support by the University of Malaya(No.UM.C/625/1/H1R/033/10) |
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| 摘 要： | Three novel Zn（II） complexes,[Zn4L1Cl4]-3H2O（1）,[Zn4L2Cl4]-2DMF（2） and[Zn4L3Cl4]H2O（3）,have been synthesized and structurally characterized.In these complexes,interesting 32-membered dodecadentate macrocyclic ligands were generated in situ by ’2 + 2’ type condensation reactions between a tetraamine and various dialdehydes.All the complexes are isostructurally tetranuclear Zn（Ⅱ） complexes,containing endogenous alkoxo and phenoxo bridges.Applications of the macrocyclic ligands as Zn2+ sensors have been investigated.Take H4L1 for example,it exhibits a 4-fold fluorescence enhancement upon the addition of 2 equiv.of Zn2+ in MeOH.
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| 关 键 词： | Macrocyclic ligand Schiff base Zn(Ⅱ) complexes Fluorescent enhancement CHEF effect |
| 收稿时间： | 2013-01-21 |
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