Wen Yang, J. Shao, Yunlong Xu
Oct 15, 2014
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Influential Citations
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Journal
Journal of Photochemistry and Photobiology A-chemistry
Abstract
Abstract 1-(4-acetyl-phenyl)-3-(4- N , N -dimethylaminophenyl)-thiourea is synthesized and characterized by NMR, IR, MS and elemental analysis. The probe exhibits the “turn-off” fluorescence response to iodide anion in THF/H 2 O (v/v = 9/1) pH = 7.4 Tris–HCl buffer solution, which is attributed to the intramolecular charge transfer (ICT). It is found that the probe has a detection limit of 0.336 μM. Such interesting results could be further supported by quantum chemical calculation, UV and 1 H NMR titration. Moreover, the probe is applied to determine iodide in powdered milk and urine samples. This experiment shows a good agreement between added and detected concentration of the iodide in real samples.