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首页> 外文期刊>Chemistry: A European journal >Highly Selective Turn-On Fluorescent Chemodosimeter for Al~(III) Detection through Al~(III)-Promoted Hydrolysis of C=N Double Bonds in the 8-Hydroxyquinoline Aldehyde Schiff Base
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Highly Selective Turn-On Fluorescent Chemodosimeter for Al~(III) Detection through Al~(III)-Promoted Hydrolysis of C=N Double Bonds in the 8-Hydroxyquinoline Aldehyde Schiff Base

机译：通过Al〜（III）检测通过Al〜（III）检测的高精度开启荧光化学表 - 在8-羟基喹啉醛席夫底座中的C = N双键进行β-（III）的水解

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摘要

Fluorescent chemodosimeters based on small organic molecules are widely used in the detection of various analytes. However, chemodosimeters for metal ion detection are still limited to a few transition metals, such as Hg~(II), Cu~(II), Fe~(III), Au~(III), etc. In this work, a fluorescent chemodosimeter of 5-chloro-7-phenyliminomethyl-8-hydroxyquinoline (2) for the detection of Al~(III) is reported. Chemodosimeter 2 exhibits a turn-on fluorescence response to Al~(III) owing to an Al~(III)-promoted hydrolysis of carbon-nitrogen double bonds. This reaction yielded a 1-Al complex, which exhibited high fluorescence emission at 487 nm based on inhibition of excitedstate intramolecular proton transfer (ESIPT). Because of the specific catalytic ability of Al~(III), the selectivity of 2 to Al~(III) is excellent both in aqueous solutions and in solid matrix. The fluorescence enhancement was as high as 582-fold and the turn-on fluorescence can be observed even by the naked eye upon an irradiation with a UV lamp. The detection limit of 2 for Al~(III) sensing is 54 nmolL~(-1) and the linear range is 0- 50 μmolL~(-1). This work provides a new strategy for designing main-group-metal chemodosimeters based on small organic molecules.
机译：基于小型有机分子的荧光化学氧屈光度计广泛用于各种分析物的检测。然而，用于金属离子检测的化学尺寸计仍然限于少数过渡金属，例如Hg〜（II），Cu〜（II），Fe〜（III），Au〜（III）等。在这项工作中，荧光灯报道了5-氯-7-苯基咪喹甲基-8-羟基喹啉（2）的化学计量计用于检测Al〜（III）。由于Al〜（III）的碳 - 氮双键的Al〜（III）水解，ChemodoSimeter 2对Al〜（III）的开启荧光反应。该反应产生1 Al络合物，基于抑制ExcitedState分子内质子转移（ESIPT），在487nm处表现出高荧光发射。由于Al〜（III）的特定催化能力，2至Al〜（III）的选择性在水溶液中和固体基质中优异。荧光增强高达582倍，甚至可以在用UV灯照射时裸眼部观察到导通荧光。 Al〜（III）感测的2的检出限为54 nmoll〜（-1），线性范围为0-50μmoll〜（-1）。这项工作提供了基于小型有机分子设计主组 - 金属化学计量计的新策略。

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  • 来源
    《Chemistry: A European journal》 |2017年第21期|共9页
  • 作者

    Jinmin Wang; Yuanyuan Li; Kai Li; Xiangru Meng; Hongwei Hou;

  • 作者单位

    College of Chemistry and Molecular Engineering Zhengzhou University Henan 450001 (P. R. China);

    School of Chemistry and Chemical Engineering Henan University of Technology Henan 450001 (P. R. China);

    College of Chemistry and Molecular Engineering Zhengzhou University Henan 450001 (P. R. China);

    College of Chemistry and Molecular Engineering Zhengzhou University Henan 450001 (P. R. China);

    College of Chemistry and Molecular Engineering Zhengzhou University Henan 450001 (P. R. China);

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用化学;
  • 关键词

    aluminium ions; chemodosimeter; fluorescence; hydrolysis; Schiff base;

    机译：铝离子;Chemodosimeter;荧光;水解;Schiff Base;

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