A novel colorimetric chemosensor based on quinoline for the sequential detection of Fe3+ and PPi in aqueous solution |
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| Authors: | Wei Wang Jiwen Wei Huimin Liu Qinglei Liu Yan Gao |
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| Institution: | 1. School of Perfume and Aroma Technology, Shanghai Institute of Technology, Shanghai 201418, China;2. Department of Chemical Engineering, University of science and Technology Liaoning, Anshan 114051, China |
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| Abstract: | A novel quinoline-functionalized Schiff-base derivative PY was designed and synthesized. Sensor PY displayed highly selective and sensitive fluorescence enhancement and naked-eye color change to Fe3+ in the presence of other competing cations. The mechanisms have been supported by Job’s plot evaluation, FT-MS and theoretical calculations. The in situ generated PY-Fe3+ complex solution exhibited a high selectivity toward PPi via Fe3+ displacement approach. The detection limits of sensor PY to Fe3+ and PY-Fe3+ complex to PPi were estimated to be 4.24 × 10?8 M and 8.18 × 10?8 M, respectively. This successive recognition feature of sensor PY makes it has a potential utility for Fe3+ and PPi detection in aqueous solution. A B3LYP/6-31G(d,p) basis set was employed for optimization of PY and PY-Fe3+ complex. |
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| Keywords: | Chemosensor Colorimetric Quinoline PPi Aqueous solution |
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