An Acylhydrazone-Based Fluorescent Sensor for Sequential Recognition of Al<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup>
A novel acylhydrazone-based fluorescent sensor <b>NATB</b> was designed and synthesized for consecutive sensing of Al<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup>. <b>NATB</b> displayed fluorometric sensing to Al<...
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| author | Donghwan Choe Cheal Kim |
| author_facet | Donghwan Choe Cheal Kim |
| author_sort | Donghwan Choe |
| collection | DOAJ |
| description | A novel acylhydrazone-based fluorescent sensor <b>NATB</b> was designed and synthesized for consecutive sensing of Al<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup>. <b>NATB</b> displayed fluorometric sensing to Al<sup>3+</sup> and could sequentially detect H<sub>2</sub>PO<sub>4</sub><sup>−</sup> by fluorescence quenching. The limits of detection for Al<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup> were determined to be 0.83 and 1.7 μM, respectively. The binding ratios of <b>NATB</b> to Al<sup>3+</sup> and <b>NATB</b>-Al<sup>3+</sup> to H<sub>2</sub>PO<sub>4</sub><sup>−</sup> were found to be 1:1. The sequential recognition of Al<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup> by <b>NATB</b> could be repeated consecutively. In addition, the practicality of <b>NATB</b> was confirmed with the application of test strips. The sensing mechanisms of Al<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup> by <b>NATB</b> were investigated through fluorescence and UV–Visible spectroscopy, Job plot, ESI-MS, <sup>1</sup>H NMR titration, and DFT calculations. |
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| language | English |
| last_indexed | 2024-03-10T05:58:14Z |
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| spelling | doaj.art-e2716ee65bf348ddbe27385fcc1481da2023-11-22T21:11:29ZengMDPI AGMaterials1996-19442021-10-011421639210.3390/ma14216392An Acylhydrazone-Based Fluorescent Sensor for Sequential Recognition of Al<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup>Donghwan Choe0Cheal Kim1Department of Fine Chemistry, Seoul National University of Science and Technology (SNUT), Seoul 136-742, KoreaDepartment of Fine Chemistry, Seoul National University of Science and Technology (SNUT), Seoul 136-742, KoreaA novel acylhydrazone-based fluorescent sensor <b>NATB</b> was designed and synthesized for consecutive sensing of Al<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup>. <b>NATB</b> displayed fluorometric sensing to Al<sup>3+</sup> and could sequentially detect H<sub>2</sub>PO<sub>4</sub><sup>−</sup> by fluorescence quenching. The limits of detection for Al<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup> were determined to be 0.83 and 1.7 μM, respectively. The binding ratios of <b>NATB</b> to Al<sup>3+</sup> and <b>NATB</b>-Al<sup>3+</sup> to H<sub>2</sub>PO<sub>4</sub><sup>−</sup> were found to be 1:1. The sequential recognition of Al<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup> by <b>NATB</b> could be repeated consecutively. In addition, the practicality of <b>NATB</b> was confirmed with the application of test strips. The sensing mechanisms of Al<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup> by <b>NATB</b> were investigated through fluorescence and UV–Visible spectroscopy, Job plot, ESI-MS, <sup>1</sup>H NMR titration, and DFT calculations.https://www.mdpi.com/1996-1944/14/21/6392aluminum iondihydrogen phosphateacylhydrazonefluorescent chemosensorsequential detectioncalculations |
| spellingShingle | Donghwan Choe Cheal Kim An Acylhydrazone-Based Fluorescent Sensor for Sequential Recognition of Al<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup> Materials aluminum ion dihydrogen phosphate acylhydrazone fluorescent chemosensor sequential detection calculations |
| title | An Acylhydrazone-Based Fluorescent Sensor for Sequential Recognition of Al<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup> |
| title_full | An Acylhydrazone-Based Fluorescent Sensor for Sequential Recognition of Al<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup> |
| title_fullStr | An Acylhydrazone-Based Fluorescent Sensor for Sequential Recognition of Al<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup> |
| title_full_unstemmed | An Acylhydrazone-Based Fluorescent Sensor for Sequential Recognition of Al<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup> |
| title_short | An Acylhydrazone-Based Fluorescent Sensor for Sequential Recognition of Al<sup>3+</sup> and H<sub>2</sub>PO<sub>4</sub><sup>−</sup> |
| title_sort | acylhydrazone based fluorescent sensor for sequential recognition of al sup 3 sup and h sub 2 sub po sub 4 sub sup sup |
| topic | aluminum ion dihydrogen phosphate acylhydrazone fluorescent chemosensor sequential detection calculations |
| url | https://www.mdpi.com/1996-1944/14/21/6392 |
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