A Selective Colorimetric and Turn-on Fluorescent Chemosensor for Hg2+ in Aqueous Solution
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- 作者：Yi-Ru Chiou ; Chin-Feng Wan ; An-Tai Wu
- 关键词：Colorimetric ; Fluorescence ; Turn ; on ; Thiophene
- 刊名：Journal of Fluorescence
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：27
- 期：1
- 页码：317-322
- 全文大小：
- 刊物类别：Biomedical and Life Sciences
- 刊物主题：Biomedicine, general; Biological and Medical Physics, Biophysics; Biotechnology; Biochemistry, general; Analytical Chemistry;
- 出版者：Springer US
- ISSN：1573-4994
- 卷排序：27
文摘
A simple colorimetric and turn-on fluorescence receptor FT (thiophene appended fluorescein-hydrazone derivative) was prepared and its cation-sensing properties were investigated. Receptor FT displayed a selective colorimetric change (from colorless to orange color) upon binding to Hg2+ in DMSO/H2O (1:9, v/v) solution. The association constant of FT-Hg2+ complex was calculated to be 3.03 × 109 M−1, and the detection limit for Hg2+ was found to be 0.24 ppm.