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Robust, sensitive and facile method for detection of F−, CN− and Ac− anions.

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Title: Robust, sensitive and facile method for detection of F−, CN− and Ac− anions.
Authors: Madhusudhana Reddy, P.1, Hsieh, Shih-Rong2, Chen, Jem-Kun3, Chang, Chi-Jung1 changcj@fcu.edu.tw, Kang, Jing-Yuan1, Chen, Chih-Hsien1
Source: Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy. Nov2017, Vol. 186, p8-16. 9p.
Subjects: Intermediates (Chemistry), Ions, Anions, Chemical detectors, Nitrophenyl compounds
Abstract: Sensing of F − , CN − and Ac − is important from the viewpoint of both medically and environmentally. Particularly, sensing of the anions in 100% water by a colorimetric chemical sensor is a highly difficult task as water molecules interfere the sensing mechanism. In this regard, sensor R1, having azo and nitrophenyl groups as signaling units and thiourea as a binding site was prepared. This sensor exclusively detected CN − ion over other testing anions in 30% aq. DMSO solution by exhibiting distinct spectral and visual color changes. However, in 15% aq. DMSO solution, R1 exhibited obvious spectral and color changes in response to F − , CN − and Ac − . On the other hand, we have also designed sensor, R2, having same signaling units of R1, but a different binding site of urea group. Surprisingly, in contrast to R1, R2 exhibited obvious spectral and color changes in 5% aq. DMSO solution only. Further, economically viable “test stripes” were prepared in a facile mode to detect the CN − in 100% aqueous solution. Such stripes can serve as a practical colorimetric probe for “in the field” detection of the ions and thus avoid additional expensive equipment. [ABSTRACT FROM AUTHOR]
Copyright of Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 123779933
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  Data: Robust, sensitive and facile method for detection of F−, CN− and Ac− anions.
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  Data: Sensing of F − , CN − and Ac − is important from the viewpoint of both medically and environmentally. Particularly, sensing of the anions in 100% water by a colorimetric chemical sensor is a highly difficult task as water molecules interfere the sensing mechanism. In this regard, sensor R1, having azo and nitrophenyl groups as signaling units and thiourea as a binding site was prepared. This sensor exclusively detected CN − ion over other testing anions in 30% aq. DMSO solution by exhibiting distinct spectral and visual color changes. However, in 15% aq. DMSO solution, R1 exhibited obvious spectral and color changes in response to F − , CN − and Ac − . On the other hand, we have also designed sensor, R2, having same signaling units of R1, but a different binding site of urea group. Surprisingly, in contrast to R1, R2 exhibited obvious spectral and color changes in 5% aq. DMSO solution only. Further, economically viable “test stripes” were prepared in a facile mode to detect the CN − in 100% aqueous solution. Such stripes can serve as a practical colorimetric probe for “in the field” detection of the ions and thus avoid additional expensive equipment. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.saa.2017.06.004
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        Text: English
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      – SubjectFull: Ions
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      – SubjectFull: Chemical detectors
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              Text: Nov2017
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