2-Hydroxyarylimidazole-based colorimetric and ratiometric fluoride ion sensors

Kumar Dhirendra; Thomas K. R. Justin

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2-Hydroxyarylimidazole-based colorimetric and ratiometric fluoride ion sensors

机译：基于2-羟基芳基咪唑的比色和比例氟离子传感器

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Two novel 2-hydroxyarylimidazoles were developed as colorimetric and ratiometric sensors for the naked-eye detection of fluoride anions. The discriminating absorption and fluorescence responses to fluoride in acetonitrile as well as a methanol-acetonitrile solvent system were observed. The bathochromic optical changes are attributed to the deprotonated species evidenced from H-1 NMR titrations. Their selectivity for fluoride over acetate was successfully established in the methanol-acetonitrile mixture. A fluorene-bridged imidazole dimer, 4a demonstrated better response for fluoride than acetate in the neat acetonitrile. Moreover, the sensor 4a exhibited a larger ratio of fluorescence intensity response (I-489/I-431 = 51) than 4b (I-521/I-448 = 18) for fluoride in acetonitrile.

机译：开发了两种新型的2-羟基芳基咪唑作为比色传感器和比色传感器，用于肉眼检测氟阴离子。观察到对乙腈以及甲醇-乙腈溶剂体系中氟化物的吸收和荧光响应的区别。红移光学变化归因于从H-1 NMR滴定证明的去质子化物质。在甲醇-乙腈混合物中成功确定了它们对乙酸根的氟化物选择性。芴桥咪唑二聚体4a在纯乙腈中显示出比乙酸盐更好的氟化物响应。此外，对于乙腈中的氟化物，传感器4a的荧光强度响应比率（I-489 / I-431 = 51）比4b（I-521 / I-448 = 18）大。

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《RSC Advances》 |2014年第99期|共9页
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Kumar Dhirendra; Thomas K. R. Justin;
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1. 2-Hydroxyarylimidazole-based colorimetric and ratiometric fluoride ion sensors [J] . Kumar Dhirendra, Thomas K. R. Justin RSC Advances . 2014,第99期

机译：基于2-羟基芳基咪唑的比色和比例氟离子传感器
2. A colorimetric and ratiometric fluorescence sensor for sensitive detection of fluoride ions in water and toothpaste [J] . Qiu Bo, Zeng Yi, Cao Lixia, RSC Advances . 2016,第54期

机译：用于敏感性检测水和牙膏中氟离子的比色和比例荧光传感器
3. Colorimetric and ratiometric sensors derivated from natural building blocks for fluoride ion detection [J] . Shi Heng, Zhao Fengfei, Chen Xinghan, Tetrahedron letters: The International Journal for the Rapid Publication of Preliminary Communications in Organic Chemistry . 2019,第52期

机译：比色和比例传感器从天然构建块中导出用于氟离子检测
4. A FRET on/off Sensor with Colorimetric and Ratiometric Signals: Fluoride Ion Sensing by Squaraine and Completely-separated Narrow Bands [C] . The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)论文集 . 2008

机译：具有比色和比例信号的FRET开/关传感器：通过方胺和完全分离的窄带进行氟离子感测
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2-Hydroxyarylimidazole-based colorimetric and ratiometric fluoride ion sensors

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