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- W2753037545 abstract "Abstract A pyrene based chemosensor was designed and synthesized. The pyrene fluorophore was connected with a pyridine unit through a Schiff base structure to give the sensor ( L ). L was tested with a variety of metal ions and exhibited high colorimetric selectivities for Cu 2+ and Fe 3+ over other ions. Upon binding with Cu 2+ or Fe 3+ , L showed an obvious optical color change from colorless to pink for Cu 2+ or orange for Fe 3+ over a wide pH range from 3 to 12. Moreover, the fluorescence of L at 370 nm decreased sharply after bonding with Fe 3+ , while other metal ions including Cu 2+ had no apparent interference. Thus, using such single chemosensor, Cu 2+ and Fe 3+ can be detected independently with high selectivity and sensitivity. The limits of detection toward Cu 2+ and Fe 3+ were 8.5 and 2.0 μM, respectively. DFT calculation results also proved the formation of stable coordination complexes and the phenomenon of fluorescence quenching by Fe 3+ . Furthermore, L was also successfully used as a bioimaging reagent for detection of Fe 3+ in living cells." @default.
- W2753037545 created "2017-09-15" @default.
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- W2753037545 date "2017-10-01" @default.
- W2753037545 modified "2023-09-27" @default.
- W2753037545 title "A pyrene-based dual chemosensor for colorimetric detection of Cu 2+ and fluorescent detection of Fe 3+" @default.
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- W2753037545 doi "https://doi.org/10.1016/j.tetlet.2017.08.078" @default.
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