高等学校化学学报 ›› 2013, Vol. 34 ›› Issue (11): 2483.doi: 10.7503/cjcu20130669

• 分析化学 • 上一篇    下一篇

N,N-二甲基吡啶苯甲醛缩对二甲氨基苯甲酰腙的合成及对Cu2+的选择性识别

韩丙星, 吴芳英   

  1. 南昌大学化学系, 南昌 330031
  • 收稿日期:2013-07-16 出版日期:2013-11-10 发布日期:2013-10-11
  • 作者简介:吴芳英,女,博士,教授,博士生导师,主要从事有机试剂合成及分子识别研究,E-mail:fywu@ncu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:21365014)和江西省自然科学基金(批准号:20132BAB203011)资助.

Synthesis of N,N-Dimethyl Pyridine Benzaldehyde-4-dimethylaminobenzoylhydrazone and Its Application for Selective Recognizing Cu2+

HAN Bing-Xing, WU Fang-Ying   

  1. Department of Chemistry, Nanchang University, Nanchang 330031, China
  • Received:2013-07-16 Online:2013-11-10 Published:2013-10-11

摘要:

设计合成了可用于识别铜离子的化合物N,N-二甲基吡啶苯甲醛缩对二甲氨基苯甲酰腙(1), 通过1H NMR, 13C NMR和MS等对其结构进行了表征; 采用荧光光谱和吸收光谱法研究了化合物1与金属离子间的相互作用. 结果表明, 化合物1对Cu2+ 呈现良好的选择性, Cu2+ 的加入使化合物1的荧光强度增强12.5倍, 加入其它金属离子如Fe3+, Zn2+, Pb2+, Hg2+, Cd2+, Co2+, Ni2+, Li+, K+, Ca2+, Mg2+ 和 Ag+, 仅引起化合物1荧光强度的微降. 采用双倒数线性回归拟合法计算可知, 化合物1与Cu2+ 形成了1: 1型强发光配合物, 结合常数为2.0×107 L/mol.

关键词: N,N-二甲基吡啶苯甲醛缩对二甲氨基苯甲酰腙, 铜离子, 荧光增强

Abstract:

A fluorescence chemosensor, N,N-dimethyl pyridine benzaldehyde-4-dimethylaminobenzoylhydrazone was synthesized and confirmed by means of 1H NMR, 13C NMR and MS. The interactions between the metal ions and compound 1 were investigated via fluorescence spectrophotometry and UV-Vis spectroscopy. The results indicated that compound 1 showed a highly selective response to Cu2+. The addition of Cu2+ induced a dramatic enhancement in the fluorescence of compound 1 by 12.5 folds, whereas the other metal ions had little fluorescence quenching, for example Fe3+, Zn2+, Pb2+, Hg2+, Cd2+, Co2+, Ni2+, Li+, K+, Ca2+, Mg2+ and Ag+. Double reciprocal linear plot method showed that compound 1 coordinated with Cu2+ to form 1: 1 stable luminescent complex and the binding constants was ca. 2.0×107 L/mol.

Key words: N,N-Dimethyl pyridine benzaldehyde-4-dimethylaminobenzoylhydrazone, Cu2+, Fluorescence enhancement

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