| 分子内电荷转移双重荧光体识别阴离子研究 |
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| 引用本文： | 吴芳英,张煊,江云宝. 分子内电荷转移双重荧光体识别阴离子研究[J]. 高等学校化学学报, 2003, 24(11): 1990-1992 |
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| 作者姓名： | 吴芳英 张煊 江云宝 |
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| 作者单位： | 1. 厦门大学化学系, 现代分析科学教育部重点实验室, 厦门 361005;2. 南昌大学化学系, 南昌 330047 |
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| 基金项目： | 国家自然科学基金 (批准号 :2 0 175 0 2 0 )，福建省自然科学基金重点课题 (批准号 :D0 2 2 0 0 0 1)，教育部优秀青年教师奖励计划 ( 2 0 0 1年 )和德国大众基金 (批准号 :I/770 72 )资助 |
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| 摘 要： | 设计合成阴离子受体是近年来超分子化学中一个颇为活跃的研究领域[1～ 7] .其中荧光法以其高灵敏度和高选择性等特点使发光受体的设计合成备受关注 [6 ,7] .分子内电荷转移 (Intramolecular charge transfer,ICT)原理已被成功地用于构筑阳离子荧光传感体系[8] ,但将其应用于阴离子识别的研究尚鲜见报道[9～ 12 ] .本文设计合成了 ICT荧光体对二甲氨Scheme 1 The structures of anion receptors基苯甲酰肼 (DMABH,结构见 Scheme 1 ) ,研究了 DMABH与阴离子如 HSO- 4,Ac O- ,H2 PO- 4,Cl O- 4,NO- 3,Cl- 和 Br- 等结合后的光…
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| 关 键 词： | 阴离子识别 氢键 对二甲氨基苯甲酰肼 分子内电荷转移 双重荧光 |
| 文章编号： | 0251-0790(2003)11-1990-03 |
| 收稿时间： | 2002-11-19 |
Recognition of Anion by Dual Fluorescent Sensor Based on the Intramolecular Charge Transfer in p-Dimethylaminobenzoylhydrazine |
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| WU Fang-Ying ,,ZHANG Xuan ,JIANG Yun-Bao. Recognition of Anion by Dual Fluorescent Sensor Based on the Intramolecular Charge Transfer in p-Dimethylaminobenzoylhydrazine[J]. Chemical Research In Chinese Universities, 2003, 24(11): 1990-1992 |
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| Authors: | WU Fang-Ying ZHANG Xuan JIANG Yun-Bao |
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| Affiliation: | 1. Department of Chemistry and the MOE Key Laboratory of Analytical Sciences, Xiamen University, Xiamen 361005, China;2. Department of Chemistry, Nanchang University, Nanchang 310047, China |
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| Abstract: | Intramolecular charge transfer(ICT) dual fluorescence of p-dimethylamino-benzoylhydrazine(DMABH) in acetonitrile was found to show a highly selective response to HSO - 4 over several other anions. The intensity ratio of the CT to LE emission and the total fluorescence intensity of DMABH decreased with increasing bisulfate concentration. While the dual fluorescence response was very similar to that of DMABA at a low HSO - 4 concentration, the CT intensity decreased drastically and the LE intensity remained almost constant, however, the difference was observed at a high HSO - 4 concentration, in which both the CT and LE intensities of DMABH decreased. A different recognition mechanism from that of DMABA was suggested for DMABH in which hydrogen bonding and protonization were the recognition interactions at low and high HSO - 4 concentrations, respectively. |
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| Keywords: | Anion recognition Hydrogen bonding p-Dimethylaminobenzoylhydrazine Intramolecular charge transfer Dual fluorescence |
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