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Novel ratiometric turn-on fluorescent probe for selective sensing of cyanide ions, effect of substitution and bio-imaging studies

机译:用于选择性感测的氰基离子,取代效应和生物成像研究的新型比率导通荧光探针

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摘要

Novel fluorogenic receptors S1-S4 (imidazo anthraquinone derivatives) were synthesized from o-substituted benzaldehyde and 1,2-diaminoanthraquinone and characterised with various spectroanalytical techniques. In the case of S1, the selectivity towards cyanide ions with turn-on fluorescence output among other anions, due to the inhibition of the twisted intramolecular charge transfer (TICT) mechanism. The effect of substitution was successfully compared with sensing studies of S2-S4. S1 showed a good binding constant with a 1 : 1 stoichiometric ratio and micromolar detection limit. The sensing behaviour was further supported by H-1 NMR titration, TD-DFT calculations and lifetime measurement studies. S1 was applied for the bio-imaging of the cell line RAW264.7 and successfully sensed cyanide ions under physiological conditions.
机译:新颖的荧光受体S1-S4(咪唑蒽醌衍生物)由O-取代的苯甲醛和1,2-二氨基醌合成,并具有各种光谱技术。 在S1的情况下,由于抑制扭曲的分子内电荷转移(TICT)机制,对其他阴离子的开启荧光输出的氰化物离子的选择性。 与S2-S4的传感研究相比,取代的效果成功。 S1显示出良好的结合常数,具有1:1化学计量比和微摩尔检测极限。 H-1 NMR滴定,TD-DFT计算和寿命测量研究进一步支持感测行为。 S1被施用于细胞系Raw264.7的生物成像,并在生理条件下成功地感测氰离子。

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  • 来源
    《RSC Advances》 |2016年第29期|共7页
  • 作者单位

    Natl Inst Technol Dept Chem Organ &

    Polymer Synth Lab Tiruchchirappalli 620015 Tamil Nadu India;

    Natl Chiao Tung Univ Dept Appl Chem Hsinchu Taiwan;

    Natl Chiao Tung Univ Dept Appl Chem Hsinchu Taiwan;

    Natl Inst Technol Dept Chem Organ &

    Polymer Synth Lab Tiruchchirappalli 620015 Tamil Nadu India;

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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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