کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1308950 | 1499154 | 2015 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A simple quinoline-based fluorescent “turn on” probe with high selectivity for Ag+ in aqueous media A simple quinoline-based fluorescent “turn on” probe with high selectivity for Ag+ in aqueous media](/preview/png/1308950.png)
• A simple quinoline-based fluorescent probe L has been developed.
• Probe L exhibits a significant fluorescent enhancement toward Ag+ with high selectivity in aqueous media.
• Probe L shows good fluorescence sensing ability to Ag+ over a wide pH range (from 6.0 to 12.0).
• The response of the probe L toward Ag+ is fast.
• The 1:1 binding mode between L and Ag+ was demonstrated by X-ray crystal diffraction.
A simple quinoline-based fluorescent probe L for Ag+ has been developed. Probe L shows fluorescence enhancement (turn on) response towards Ag+ with high selectivity in aqueous media (methanol–water, v/v = 3:7, pH 7.2, 20 mM Tris–HCl) based on a combinational effect of the inhibition of intermolecular photoinduced proton transfer and chelation-enhanced fluorescence. And an obvious fluorescent color change could be observed by naked eyes under the light of 365 nm. The binding mode between L and Ag+ has been found to be 1:1 based on the fluorescence/absorption titration, ESI-MS and further confirmed by X-ray crystallography.
A simple quinoline-based fluorescent probe L has been developed and shows fluorescence enhancement (turn on) response towards Ag+ with high selectivity in aqueous media based on a combinational effect of the inhibition of intermolecular photoinduced proton transfer and chelation-enhanced fluorescence.Figure optionsDownload as PowerPoint slide
Journal: Inorganica Chimica Acta - Volume 435, 24 August 2015, Pages 137–141