| 4′-对二甲氨基苯基-2,2′∶6′,2″-三联吡啶-锌配合物在含水乙醇介质中对磷酸根离子的高选择性识别研究 |
| Complex of 4′-(p-dimethylaminobenzene)-2,2′:6′,2″-terpyridine with Zinc Ion as a Fluorescent Compound Selective Recognition of Phosphate Ions |
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| 摘要: 合成了一种-2,2′∶6′,2″-三联吡啶衍生物，4′-对二甲氨基苯基-2,2′∶6′,2″-三联吡啶(L)，利用L与锌离子形成的稳定配合物(ZnL)，用紫外可见吸收光谱和荧光光谱研究了在无水乙醇和含水乙醇介质中各种阴离子对该配合物ZnL的吸收光谱和荧光发射光谱的影响，发现该配合物能在含水乙醇介质中选择性的识别磷酸根类离子。磷酸根、磷酸氢根与磷酸二氢根离子分别与ZnL配合物以1∶1、2∶1及2∶1结合模式影响体系的吸收和荧光发射，ZnL配合物对磷酸根类离子的识别作用主要源于配合物多余的结合位点。 |
| 关键词: 锌配合物 4′-对二甲氨基苯基-2,2′∶6′,2″-三联吡啶 磷酸根离子 阴离子识别 |
| 基金项目: |
| Abstract: The ligand L(L=4′-(p-dimethylaminobenzene)-2,2′∶6′,2″-terpyridine) was synthesized and its complex with zinc ion was studied as anion binding receptor in polar solvent as VEthanol∶VH2O=9∶1 mixture. The results indicated that the metal complex ZnL could act as efficient and selective sensor for phosphate ions. The UV-Vis and fluorescence spectroscopic titration experiments indicated the formation of 1∶2 complexes between ZnL and HPO42-(or H2PO4-), and 1∶1 complex between ZnL and PO43-. In addition, complex ZnL has a little response to F-, but there are no any responses to other anions such as Cl-, Br-, AcO-, HSO4-, SO42- etc. The binding manner between the complex ZnL and phosphate ions was proposed. |
| Keywords: Zn complex 4′-(p-dimethylaminobenzene)-2,2′∶6′,2″-terpyridine anion recognition phosphate ions |
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| 胡望霞,林丽榕,黄荣彬,郑兰荪.4′-对二甲氨基苯基-2,2′∶6′,2″-三联吡啶-锌配合物在含水乙醇介质中对磷酸根离子的高选择性识别研究[J].无机化学学报,2009,25(3):381-385. |
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