高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (11): 1990.

• 研究简报 • 上一篇    下一篇

分子内电荷转移双重荧光体识别阴离子研究

吴芳英1,2, 张煊1, 江云宝1   

  1. 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
  • 收稿日期:2002-11-19 出版日期:2003-11-24 发布日期:2003-11-24
  • 通讯作者: 江云宝(1963年出生),男,博士,教授,博士生导师,主要从事荧光光谱分析法研究.
  • 基金资助:

    国家自然科学基金(批准号:20175020);福建省自然科学基金重点课题(批准号:D0220001);教育部优秀青年教师奖励计划(2001年)和德国大众基金(批准号:I/77072)资助

Recognition of Anion by Dual Fluorescent Sensor Based on the Intramolecular Charge Transfer in p-Dimethylaminobenzoylhydrazine

WU Fang-Ying1,2, ZHANG Xuan1, JIANG Yun-Bao1   

  1. 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
  • Received:2002-11-19 Online:2003-11-24 Published:2003-11-24

PDF (PC)

被引次数

42

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

Abstract: Intramolecular charge transfer(ICT) dual fluorescence of p-dimethylamino-benzoylhydrazine(DMABH) in acetonitrile was found to show a highly selective response to HSO4-over several other anions.The intensity ratio of the CT to LEemission 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 HSO4-concentration, the CT intensity decreased drastically and the LEintensity remained almost constant, however, the difference was observed at a high HSO4-concentration, in which both the CT and LEintensities of DMABH decreased.Adifferent recognition mechanism from that of DMABA was suggested for DMABH in which hydrogen bonding and protonization were the recognition interactions at low and high HSO4-concentrations, respectively.

Key words: Anion recognition, Hydrogen bonding, p-Dimethylaminobenzoylhydrazine, Intramolecular charge transfer, Dual fluorescence

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