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A novel off-on fluorescent chemosensor for Al3+ derived from a 4,5-diazafluorene Schiff base derivative

机译:用于Al3 +的新型荧光化学传感器,衍生自4,5-二氮氟胞胞席克夫基衍生物

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摘要

The performance of a chemosensor is closely related to its structure. A new Schiff bass (DFSB) based on 4,5-diazafluorene units has been synthesized in this work. The interaction of DFSB with different metal ions has been studied using UV-vis absorption spectra and fluorescent spectra. The results show that DFSB is a highly selective and sensitive probe for Al3+ ions over other commonly coexisting metal ions in ethanol. A very obvious fluorescence enhancement effect was observed, and a turn-on ratio over 1312-fold was triggered with the addition of 10 equiv. of Al3+ ions. What is more, such fluorescent responses could be detected by the naked eye under a UV-lamp. The lowest detection limit for Al3+ was determined as 3.7 x 10(-8) M. The complex solution (DFSB-Al3+) exhibited reversibility with EDTA. These results may be caused by the unique molecular structure.
机译:化学传感器的性能与其结构密切相关。 基于4,5-diazafluorene单元的新Schiff低音(DFSB)已在这项工作中合成。 使用UV-Vis吸收光谱和荧光光谱研究了DFSB与不同金属离子的相互作用。 结果表明,DFSB是Al3 +离子的高度选择性和敏感的探针,其在乙醇中的其他通常共存的金属离子上。 观察到一个非常明显的荧光增强效果,并在增加10当量时触发1312倍的接通比率。 Al3 +离子。 更重要的是,可以通过UV灯下的肉眼检测这种荧光反应。 Al3 +的最低检测限定为3.7×10(-8)M.复合溶液(DFSB-AL3 +)与EDTA表现出可逆性。 这些结果可能是由独特的分子结构引起的。

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  • 来源
    《RSC Advances》 |2018年第56期|共6页
  • 作者单位

    Wuhan Inst Technol Sch Chem Engn &

    Pharm Minist Educ Key Lab Green Chem Proc Wuhan 430205 Hubei Peoples R China;

    Wuhan Inst Technol Sch Chem Engn &

    Pharm Minist Educ Key Lab Green Chem Proc Wuhan 430205 Hubei Peoples R China;

    Lanzhou Univ Coll Chem &

    Chem Engn Lanzhou 730000 Gansu Peoples R China;

    Lanzhou Univ Coll Chem &

    Chem Engn Lanzhou 730000 Gansu Peoples R China;

    Wuhan Inst Technol Sch Chem Engn &

    Pharm Minist Educ Key Lab Green Chem Proc Wuhan 430205 Hubei Peoples R China;

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

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