Spontaneous optical response towards cyanide ion in water by a reactive binding site probe.
Spontaneous optical response towards cyanide ion in water by a reactive binding site probe.
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DOI：
10.1016/j.saa.2020.118190
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发表时间：
2020-02
期刊：
影响因子：
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通讯作者：
Jong Ho Park;R. Manivannan;P. Jayasudha;Y. Son
中科院分区：
文献类型：
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作者：
Jong Ho Park;R. Manivannan;P. Jayasudha;Y. Son
设计、合成、表征了含二苯胺（R1）和二苄胺（R2）的吲哚衍生物，并研究了其在100%水中对氰化物的识别能力。该探针表现出双通道特性，即同时具有比色和荧光变化，可有效检测氰根离子。氰根离子的离散颜色变化使得作为比色传感器成为可能，并且可以通过肉眼容易地看到。氰离子的识别是通过亲核加成反应将氰离子连接到吲哚C双键N上的C原子上实现的。此外，发现的探针检测限（nM范围）远低于WHO限值。将该探针用于真实的水样中氰离子的测定，结果表明，该探针能有效地用于水样中氰离子的测定。
Indolium derivatives bearing diphenyl amine (R1) and dibenzylamine (R2) linked through benzene was designed, synthesized, characterized and its cyanide recognizing abilities are studied in 100% water. The probes were exhibited dual channel properties i.e. both colorimetric and fluorimetric changes for the effective sensing of cyanide ion. The discrete color variation of probes with cyanide ion makes possible as colorimetric sensor and which was seen easily through naked eye. The recognition of cyanide ion is accomplished via the attachment of cyanide ion at the C atom of indolium Cdouble bondN group through nucleophilic addition. Also, the found detection limits of probes (nM range) were much lower than the WHO limit. Besides, the probes were effectively applied to determine cyanide ion in real water samples and thus was confirmed with HPLC method.