4.7 Article

Chemodosimeters for mercury(II) and methylmercury(I) based on 2,1,3-benzothiadiazole

Journal

SENSORS AND ACTUATORS B-CHEMICAL
Volume 149, Issue 1, Pages 20-27

Publisher

ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2010.06.040

Keywords

Chemodosimerer; 2,1,3-Benzothiadiazole; Mercury(II); Methylmercury(I); Fluorescence probe

Funding

  1. NSFC/China [2006CB806200]
  2. Scientific Committee of Shanghai

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Two novel 2,1,3-benzothiadiazole-based chemodosimeters (1a and 1b) were designed and synthesized, and their fluorescent behaviors toward various metal ions were investigated. Chemodosimeter 1a shows excellent optical properties and exclusively distinguishes Hg2+ and CH3Hg+ from other metal ions in aqueous solutions. Though the response of chemodosimeter 1b to Hg2+ and CH3Hg+ is slower than 1a, fortunately, chemodosimeter 1b becomes a promising fluorescent sensor for Hg2+ and CH3Hg+ with high selectivity. Evidences for the desulfurization mechanism were provided by UV-vis and fluorescence titration spectra and especially H-1 NMR and HRMS experiments. (C) 2010 Elsevier B.V. All rights reserved.

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