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- W2006100657 abstract "A highly selective fluorescence switch on sensor, L for detecting Cu 2+ has been synthesized by introducing a bis-(2-picolyl)amine moiety at the lower rim of a calix[4]arene platform via amide linkage. Binding properties of L toward ten different biologically relevant M n+ ions have been studied by fluorescence and absorption spectroscopy in methanol and aqueous methanol. L was found to detect Cu 2+ selectively down to a concentration of 196 and 341 ppb, respectively, in methanol and 1:1 aqueous methanol even in the presence of other metal ions. The composition of the complex has been found to be 1:1 based on the Job plot and is further confirmed by ESI MS. The role of calix[4]arene platform as well as the pre-organized binding core in the selective recognition of Cu 2+ has been demonstrated by studying appropriate reference molecules. The possible modes of binding of L with Cu 2+ have been modeled by computational calculations. L and its Cu 2+ complex could very well be differentiated based on the nano-structural features observed in SEM and AFM." @default.
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- W2006100657 date "2009-06-01" @default.
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- W2006100657 title "Fluorescence switch-on sensor for Cu2+ by an amide linked lower rim 1,3-bis(2-picolyl)amine derivative of calix[4]arene in aqueous methanol" @default.
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- W2006100657 doi "https://doi.org/10.1016/j.tetlet.2009.03.109" @default.
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