A highly sensitive "ON-OFF" optical sensor for the selective detection of cyanide ions in 100% aqueous solutions based on hydrogen bonding and water assisted aggregation induced emission.,Chemical Communications

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A highly sensitive "ON-OFF" optical sensor for the selective detection of cyanide ions in 100% aqueous solutions based on hydrogen bonding and water assisted aggregation induced emission.
Chemical Communications ( IF 4.3 ) Pub Date : 2020-06-26 , DOI: 10.1039/d0cc02510k
Ramo Nazarian ₁ , Hossein Reza Darabi , Kioumars Aghapoor , Rohoullah Firouzi , Hani Sayahi

Affiliation

Nanoparticles N,N′-(pyridine-2,6-diyl)bis(2-(2,4-dichlorophenoxy)acetamide) (1) exhibited an “on–off” emission response toward cyanide (CN⁻) ions in 100% aqueous solutions based on AIE features. AIEgen 1 is an easy-to-use probe that exhibits rapid response (5 s), extremely high sensitivity (limit of detection = 8.2 nM) and excellent selectivity. The sensing performance of CN⁻ through a test kit and bitter seed solutions was good. The experimental results show that compound 1 is planar and can self-assemble into a supramolecular system and show blue emission. Then, CN⁻ destroys both hydrogen bonds and the aggregates of 1 and quenches the emission. This process is reversible upon the addition of HCl solution.

中文翻译：

一种高灵敏度的“ ON-OFF”光学传感器，用于基于氢键和水辅助聚集诱导的发射，选择性检测100％水溶液中的氰化物离子。

纳米颗粒Ñ，Ñ ' - （吡啶-2,6-二基）二（2-（2,4-二氯苯氧基）乙酰胺）（1）表现出“开-关”发射朝向氰化物（CN响应^-）在100％的离子基于AIE功能的水溶液。AIEgen 1是一种易于使用的探针，具有快速的响应（5秒），极高的灵敏度（检测极限= 8.2 nM）和出色的选择性。CN的检测性能^-通过检测试剂盒和苦种解决方案是好的。实验结果表明，化合物1是平面的，可以自组装成超分子系统并显示蓝色发射。然后，CN ^-破坏二者的氢键和的聚集体1并终止发射。加入HCl溶液后该过程是可逆的。

更新日期：2020-08-06

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