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Turn-on fluorescent chemosensor for determination of lutetium ion

机译:开启式荧光化学传感器测定determination离子

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A turn-on fluorescent chemosensor is introduced for the detection of Lu3+ ion using N-[3-methyl]-2-[pyridine-2-amido] phenyl] pyridine-2-carboxamide (L) molecule. Fluorescent emission intensity of L enhances after binding to Lu3+ ions in ethanol-water solution (1:9, v/v). The observed enhancement is the result of a strong covalent binding between Lu3+ ion and L (the binding constant value is 2.0 x 106 mo1(-1) L). The proposed optical chemosensor can be applied for the analysis of Lu3+ ion in a linear range of 3.3 x 10(-7) to 1.0 x 10(-6) mol L-1. The limit of detection was obtained 8.6 x 10(-7) mol L. The probe exhibits high selectivity toward Lu3+ ion in comparison with common metal ions. The proposed fluorescent chemosensor was successfully used in the determination of Lu3+ ion in some water samples. (C) 2014 Elsevier B.V. All rights reserved.
机译:引入了一种开启式荧光化学传感器,使用N- [3-甲基] -2- [吡啶-2-氨基]苯基]吡啶-2-羧酰胺(L)分子检测Lu3 +离子。 L与乙醇水溶液中的Lu3 +离子结合后,L的荧光发射强度增强(1:9,v / v)。观察到的增强是Lu3 +离子与L之间强共价结合的结果(结合常数值为2.0 x 106 mo1(-1)L)。提出的光学化学传感器可用于分析Lu3 +离子,线性范围为3.3 x 10(-7)至1.0 x 10(-6)mol L-1。获得的检出限为8.6 x 10(-7)molL。与普通金属离子相比,该探针对Lu3 +离子具有较高的选择性。所提出的荧光化学传感器已成功用于某些水样中Lu3 +离子的测定。 (C)2014 Elsevier B.V.保留所有权利。

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