Colorimetric and ratiometric fluorescent detection of bisulfite by a new HBT-hemicyanine hybrid |
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| Authors: | Haiyan Zhang Zijun Huang Guoqiang Feng |
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| Institution: | 1. School of Chemical and Environmental Engineering, Wuhan Polytechnic University, 68 Xuefu South Road, Wuhan 430023, People''s Republic of China;2. Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, People''s Republic of China |
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| Abstract: | A novel HBT-hemicyanine hybrid was prepared. This hybrid not only displays a large red-shifted (Δλ = 125 nm) emission compared to the well known ESIPT dye HBT, but also can be used as a new probe for rapid, colorimetric and ratiometric fluorescent detection of bisulfite with high selectivity and sensitivity in aqueous solution. The detection limit of this probe for HSO3− was calculated to be about 56 nM with a linear range of 0–25 μM. The potential application of this probe was exampled by detection of bisulfite in real food samples and living cells. Overall, this work not only provided a new ratiometric sensing platform, but also provided a new promising colorimetric and ratiometric fluorescent probe for bisulfite. |
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| Keywords: | HBT-hemicyanine hybrid Colorimetric Fluorescent Ratiometric Bisulfite |
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