<p>A&#xa0;sulfonamide derivative synthesized from 1,8-naphthalimide-based amine and 4-methoxy-benzenesulfonyl chloride has been enwrapped into the micelles of a neutral surfactant TX-100 to form highly emissive nanomicelles <b>MXL@TX- 100</b>. The proposed sensor offered highly sensitive turn-off detection of Allura red (linear range = 0.66–224&#xa0;µM) with the limit of detection (LOD) of 0.2&#xa0;µM (<i>R</i><sup>2</sup> = 0.999) due to fluorescence resonance energy transfer from <b>MXL@TX- 100</b> to Allura red. To the best of our knowledge, no organic compound-based sensor has been reported for the determination of Allura red so far. Additionally, nanomicelles <b>MXL@TX- 100</b> were utilized for the sensing of picric acid (LOD = 0.92&#xa0;µM, <i>R</i><sup>2</sup> = 0.998) in the linear range 3.03–928&#xa0;µM. The binding constant between <b>MXL@TX- 100-</b>Allura red and <b>MXL@TX- 100-</b>picric were calculated to be 1.45 × 10<sup>5</sup>&#xa0;M<sup>−1</sup> and 1.97 × 10<sup>4</sup>&#xa0;M<sup>−1</sup>, respectively. Moreover, nanomicelles <b>MXL@TX- 100</b> conveniently detected Allura red in real samples, viz. candy, soft drink, gulkand, and pharmaceutical syrup.</p> Graphical Abstract <p></p>

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Construction of highly emissive Schiff base containing TX- 100 nanomicelles for monitoring the levels of devil in disguise Allura red and picric acid in real samples

  • Nisha Jain,
  • Navneet Kaur

摘要

A sulfonamide derivative synthesized from 1,8-naphthalimide-based amine and 4-methoxy-benzenesulfonyl chloride has been enwrapped into the micelles of a neutral surfactant TX-100 to form highly emissive nanomicelles MXL@TX- 100. The proposed sensor offered highly sensitive turn-off detection of Allura red (linear range = 0.66–224 µM) with the limit of detection (LOD) of 0.2 µM (R2 = 0.999) due to fluorescence resonance energy transfer from MXL@TX- 100 to Allura red. To the best of our knowledge, no organic compound-based sensor has been reported for the determination of Allura red so far. Additionally, nanomicelles MXL@TX- 100 were utilized for the sensing of picric acid (LOD = 0.92 µM, R2 = 0.998) in the linear range 3.03–928 µM. The binding constant between MXL@TX- 100-Allura red and MXL@TX- 100-picric were calculated to be 1.45 × 105 M−1 and 1.97 × 104 M−1, respectively. Moreover, nanomicelles MXL@TX- 100 conveniently detected Allura red in real samples, viz. candy, soft drink, gulkand, and pharmaceutical syrup.

Graphical Abstract