کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1232726 1495230 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Colorimetric detection of anions in aqueous media using N-monosubstituted diaminomaleonitrile-based azo-azomethine receptors: Real-life applications
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Colorimetric detection of anions in aqueous media using N-monosubstituted diaminomaleonitrile-based azo-azomethine receptors: Real-life applications
چکیده انگلیسی


• New unsymmetrical diaminomaleonitrile-based azo-azomethine dyes have been synthesized.
• The dyes can be considered as practical sensors for qualitative and quantitative detection of F− in real samples.
• The detection limit of inorganic F− in aqueous media is lower than WHO permissible level for safe drinking.

New N-monosubstituted diaminomaleonitrile-based azo-azomethine dyes have been synthesized in order to develop colorimetric sensors for detection of biologically important anions in aqueous media. Importantly, the reported sensor decorated with strong electron-withdrawing group can detect inorganic fluoride in water even at 0.037 ppm level, which is lower than WHO permissible level (below 1 ppm). Successfully, the prepared dyes were used for qualitative and quantitative detection of inorganic fluoride in toothpaste and mouthwash. The anion recognition mechanism was also investigated by detailed UV–Vis and 1H NMR experiments. The detailed 1H NMR experiments corroborated that anion recognition is based on the deprotonation phenomenon.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 139, 15 March 2015, Pages 405–412
نویسندگان
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