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• W3024468314 abstract "A highly sensitive and efficient fluorescence-ultraviolet dual channel chemical sensor H2L based on the salamo-like bisoxime (6,6′-dimethoxy-2, 2′-[ethylenediyldioxybis(nitrilomethylidyne)]diphenol) was synthesized, Cu2+ and S2− ions can be detected respectively. For the identification of metal cations, the Cu2+ can quench the fluorescence intensity of probe H2L at the excitation wavelength of 311 nm, and when the same equivalent of EDTA was added, the fluorescence intensity of L-Cu complex returned to its original intensity practically, completing the fluorescence “OFF-ON-OFF” cycle after adding the same amount of Cu2+ again. The mechanism was confirmed by high resolution mass spectrometry, and it was concluded that the probe H2L and Cu2+ formed a complex. For the identification of anions, UV–Vis spectral identification and naked-eye recognition for S2− were performed. The binding mode of the probe to the sulfur anion and the recognition mechanism were confirmed by 1H NMR titration. In addition, the probe H2L showed high selectivity and sensitivity to Cu2+ and S2−, the detection limits of L-Cu and L-S systems toward Cu2+ and S2− are 46 and 25 nM respectively. In terms of application, the content of Cu2+and S2− in different water samples (distilled water, Yellow River water and tap water) with probe H2L was successfully tested. These results indicated that the probe H2L can be used as a highly selective and sensitive dual channel sensor to detect both Cu2+ and S2− ions in the environment and biological systems." @default.
• W3024468314 created "2020-05-21" @default.
• W3024468314 creator A5020975572 @default.
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• W3024468314 date "2020-05-14" @default.
• W3024468314 modified "2023-10-18" @default.
• W3024468314 title "Catching S²⁻ and Cu²⁺ by a highly sensitive and efficient salamo-like fluorescence-ultraviolet dual channel chemosensor" @default.
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• W3024468314 doi "https://doi.org/10.1080/10426507.2020.1756807" @default.
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