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A benzimidazole functionalized NDI derivative for recyclable fluorescent detection of cyanide in water

机译：苯并咪唑官能化的NDI衍生物可循环荧光检测水中的氰化物

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摘要

A fluorescent chemosensor (L2) has been designed and synthesized via a simple one step reaction through rationally combining benzimidazole and naphthalene diimide (NDI) moieties together. The structure of L2 has been confirmed by single crystal X-ray diffraction. The sensor L2 shows a highly selective and sensitive fluorescence response for CN?. Upon the addition of a CN? water solution into the DMSO solution of sensor L2, the solution of L2 shows an instant fluorescence enhancement and other anions couldn't interfere in the CN? detection process. The CN? sensing process shows reversible properties by adding H+ into the sensor L2 solution treated by CN?. The detection limit of the sensor towards CN? is 8.32 × 10?7 M, which could be distinguished by the naked eye in a UV lamp. The sensor L2 could serve as a practical and convenient recyclable test kit to detect CN?.
机译：通过将苯并咪唑和萘二酰亚胺（NDI）部分合理结合在一起，通过简单的一步反应设计并合成了荧光化学传感器（L2）。 L 2的结构已经通过单晶X射线衍射确认。传感器L2对CN ？ 表现出高度选择性和灵敏的荧光响应。在传感器L2的DMSO溶液中添加CN ？ 水溶液后，L2溶液立即显示荧光增强，其他阴离子不会干扰CN ？ 检测过程。通过将CN + 添加到经过CN ？ 传感过程显示出可逆的特性。 > ？ 。传感器对CN ？ 的检测限为8.32×10 ？7 M，可以通过以下方式区分肉眼在紫外线灯下。传感器L2可以作为一种实用且方便的可回收测试套件，用于检测CN ？ 。

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