| 一种基于半菁染料的双重传感高选择性氰离子探针 |
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| 引用本文： | 尹正日,李宏达,尹炳柱.一种基于半菁染料的双重传感高选择性氰离子探针[J].化学试剂,2012,34(6):539-541. |
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| 作者姓名： | 尹正日 李宏达 尹炳柱 |
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| 作者单位： | 延边大学理学院化学系,吉林延吉,133002 |
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| 基金项目： | 国家自然科学基金资助项目，教育部博士点基金资助项目 |
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| 摘 要： | 通过7-二甲氨基香豆素-3-醛和碘化1,2-二甲基吡啶季盐的缩合反应合成了一种半菁染料。在纯水体系中,半菁染料以吸收波长蓝移和荧光淬灭双重传感高选择性地识别氰离子。双重传感效应归因于氰离子对半菁染料的麦克尔体系的亲核加成引起的共轭链的断裂,中断了香豆素和吡啶季盐结构单元间的分子内电荷转移。
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| 关 键 词： | 香豆素 吡啶季盐 半菁染料 氰离子探针 双重传感 分子内电荷转移 |
A highly selective cyanide probe with dual sensing based on hemicyanine dye |
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| YIN Zheng-ri
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LI Hong-da
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YIN Bing-zhu.A highly selective cyanide probe with dual sensing based on hemicyanine dye[J].Chemical Reagents,2012,34(6):539-541. |
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| Authors: | YIN Zheng-ri LI Hong-da YIN Bing-zhu |
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| Affiliation: | *(Department of Chemistry,College of Science,Yanbian University,Yanji 133002,China) |
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| Abstract: | A hemicyanine dye has been prepared through cross-coupling reaction of 7-diethylaminocoumarin-3-carbaldehyde and 1,2-dimethylpyridinium.Hemicyanine dye showed high selectivity for cyanide over other anions by dual changes in both maxima absorption(blue-shift) and emission(turn-off) bands in the water. |
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| Keywords: | coumarin pyridinum salt hemicyanide dye cyanide probe dual sensing intermolecule charge transfer |
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