Abstract
A fluorescent sensor, 5, based upon the sugar-aza-crown ether structure with two anthracenetriazolymethyl groups was prepared and its fluoroionophoric properties toward transition metal ions were investigated. In methanol, the sensor exhibits highly selective recognition of Cu 2+ and Hg 2+ ions among a series of tested metal ions. The association constant for 5·Cu 2+ and 5·Hg 2+ in methanol was calculated to be 4.0 × 10 5 M −1 and 1.1 × 10 5 M −1, respectively. The detection limits for the sensing of Cu 2+ and Hg 2+ ions were 1.39 × 10 −6 M and 1.39 × 10 −5 M, respectively.
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