A rhodamine derivative probe for highly selective detection of Cu(II)
FRONTIERS IN BIOSCIENCE-LANDMARK(2022)
摘要
Background: Abnormal Cu(II) ions levels may affect many biological functions, and it is of great importance to detect Cu(II) ions in organisms. Methods: Herein, we report a near-infrared (NIR) fluorescent probe EtRh-N-NH2 for the detection of Cu(II). In the probe structure, a rhodamine core was used, and a hydrazine group was employed as the responsive site. Results & Conlusions: EtRh-N-NH2 displayed sensitive, specific and fast response upon Cu(II) with excellent linear relationship between the concentration and fluorescence emission intensity in 0-1 mu M range. The releasing EtRh-COOH exhibited 762 nm of emission wavelength with a 75 nm of Stokes shift.
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关键词
Large Stokes shift,Cu(II) detection,Fluorescent probe
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