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A sensitive OFF-ON-OFF fluorescent probe for the cascade sensing of Al(3+)and F(-)ions in aqueous media and living cells

机译:一种敏感的离上荧光探针,用于级联感测Al(3+)和含水介质和活细胞中的离子

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摘要

A simple Schiff-base ligand 2-hydroxy-1-naphthaldehyde semicarbazone (HNS) was synthesized and characterized. Based on the combined effect of inhibition of CH& xe001;N isomerization and chelation-enhanced fluorescence (CHEF),HNSfunctions as a fluorescence "turn on" sensor for Al(3+)in buffered aqueous media. Based on the strong affinity of Al(3+)to F(-)ions, thein situgenerated Al3+-HNScomplex can also be utilized as an effective chemosensor for F(-)sensing by metal displacement approach, ensuing quenching of fluorescence by the reversible return ofHNSfrom Al3+-HNScomplex. Thus a method using a single probe for the detection of both Al(3+)and F(-)ions is developed. The system exhibits high selectivity and sensitivity for Al(3+)and F(-)ions and the detection limits were found to be as low as 6.75 x 10(-8)M and 7.89 x 10(-7)M, respectively. Furthermore, the practical applicability of this probe has been examined in living cells.
机译:合成并表征了一种简单的Schiff-Base配体2-羟基-1-萘二甲苯二脲(HNS)。 基于CH&XE001抑制的抑制作用; N异构化和螯合增强的荧光(厨师),HNSFunction作为荧光的荧光“接通”在缓冲水性介质中的Al(3+)传感器。 基于Al(3+)至F( - )离子的强酰基,in inugenerated Al3 + -hnscomplex也可以用作由金属位移方法的F( - )感测的有效化学传感器,随着可逆返回,随后通过可逆返回淬火荧光 Al3 + -HNSComplex。 因此,开发了使用单个探针用于检测Al(3+)和F( - )离子的方法的方法。 该系统对Al(3+)和F( - )离子具有高选择性和敏感性,发现检测限量分别低至6.75×10(-8)m和7.89×10(-7)m。 此外,在活细胞中检查了该探针的实际适用性。

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  • 来源
    《RSC Advances》 |2020年第36期|共7页
  • 作者单位

    Taiyuan Normal Univ Dept Chem Jinzhong 030619 Peoples R China;

    Shanxi Univ Inst Environm Sci Dept Chem Taiyuan 030006 Peoples R China;

    Taiyuan Normal Univ Dept Chem Jinzhong 030619 Peoples R China;

    Taiyuan Normal Univ Dept Chem Jinzhong 030619 Peoples R China;

    Natl Inst Food &

    Drug Control Beijing 100050 Peoples R China;

    Shanxi Univ Inst Environm Sci Dept Chem Taiyuan 030006 Peoples R China;

    Shanxi Univ Inst Environm Sci Dept Chem Taiyuan 030006 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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