| 水杨醛缩苯乙酰腙对锌离子的高选择性识别 |
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| 引用本文： | 吴粦华,薛王欣. 水杨醛缩苯乙酰腙对锌离子的高选择性识别[J]. 化学世界, 2009, 50(9) |
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| 作者姓名： | 吴粦华 薛王欣 |
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| 作者单位： | 龙岩学院,化学与材料学院,福建,龙岩,364000;厦门大学化学化工学院化学系,福建,厦门,361005;厦门大学化学化工学院化学系,福建,厦门,361005 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 设计合成了用于识别锌离子的荧光传感分子——水杨醛缩苯乙酰腙(1),通过红外光谱、核磁共振谱和质谱表征其结构;利用其荧光性质研究了该物质对几种过渡金属离子的识别性质,初步探讨了其结合模式。实验表明:在乙腈介质中,主体分子1表现出对Zn2+良好的选择性,Zn2+的加入导致1的长波长荧光增强437倍,而其它过渡金属只引起1的荧光略微增强,Job法实验揭示1与Zn2+的结合比为1∶1。
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| 关 键 词： | 水杨醛缩苯乙酰腙 锌离子 荧光传感 分子识别 |
Highly Selective Recognition of Zinc Ion by Salicylaldehyde-2-phenylacetylhydraonde |
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| WU Lin-hua,XUE Wang-xin. Highly Selective Recognition of Zinc Ion by Salicylaldehyde-2-phenylacetylhydraonde[J]. Chemical World, 2009, 50(9) |
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| Authors: | WU Lin-hua XUE Wang-xin |
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| Affiliation: | 1;2;1.Department of Chemical and Materials Engineering;Longyan University;Fujian Longyan 364000;China;2.Department of Chemistry;College of Chemistry and Chemical Engineering;Xiamen Universtty;Fujian Xiamen 361005;China |
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| Abstract: | A fluorescent chemosensor,salicylaldehyde-2-phenylacetylhydrazone(1),was designed and synthesized.1 was confirmed by IR,~1H NMR and ESI-MS.1 was found to recognize transition metal ions such as Zn~(2+)、Cu~(2+)、Hg~(2+)、Pb~(2+) and Ni~(2+) via its fluorescence spectra.Mechanism of enhancement of 1's fluorescence by Zn~(2+) was briefly discussed.It was found that 1 showed a highly selective response to Zn~(2+).In acetonitrile Zn~(2+) induced a dramatic enhancement in the fluorescence of 1 by 437 folds,whereas the other transition metal ions had little influence.Job's test showed 1 coordinated with Zn~(2+) to form 1∶1 model complex. |
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| Keywords: | salicylaldehyde-2-phenylacetylhydrazone Zn~(2+) fluorescence enhancement molecular recognition |
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