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A new and simple fluorescent chemosensor 1, based on julolidine and tryptophan moieties, has been synthesized and characterized. The sensor 1 displayed a selective and sensitive detecting ability for aluminum (III) ion by ‘OFF–ON’ fluorescent response in aqueous solution. This sensing mechanism might be due to the inhibition of CN isomerization, and the activation of chelation enhanced fluorescence...
A new simple “off–on fluorescence type” chemosensor 1 (2-(N-(2-hydroxyethyl)-N-((pyridin-2-yl)methyl)amino)-N-(quinolin-8-yl)acetamide) has been synthesized for Zn2+. The sensor 1 comprises of the quinoline as fluorophore and the 2-((pyridin-2-yl)methylamino)ethanol as both binding site and water-soluble functional group. 1 showed a remarkable fluorescence enhancement in the presence of Zn2+ in aqueous...
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