Abstract A salamo-like chemical probe HL with novel structure for continuous recognition of Cu2+ and CN− was synthesized by Schiff base reaction. Some meticulous researches on the properties of probe HL had been carried out by UV–Vis spectra and fluorescence spectra, high-resolution mass spectra and nuclear magnetic resonance spectra. The probe HL could identify Cu2+ by dual channels, and the formed copper(II) complex L-Cu2+ could be used as a probe to recognize CN− in the visible region, and could realize naked eye recognition with color changed from bright yellow to red. Combining the color changes and smartphones, a cost-effective real-time detection method which named the RGB analysis method had been developed for on-site detection of CN− content. In addition, the lowest detection limit for Cu2+ and CN− could reach 2 × 10−8 M and 2.52 × 10−8 M, respectively. And a good recovery was obtained when determining the CN− in the real water samples.

中文翻译：

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基于配位和亲核加成机制的能够对Cu2+和CN-进行荧光和比色检测的化学探针

摘要 通过席夫碱反应合成了一种新型结构的类萨拉莫化学探针HL，可连续识别Cu2+和CN-。通过紫外-可见光谱和荧光光谱、高分辨率质谱和核磁共振光谱对探针HL的性质进行了一些细致的研究。探针HL可通过双通道识别Cu2+，形成的铜(II)络合物L-Cu2+可作为探针在可见光区识别CN-，实现肉眼识别，颜色由亮黄色变为红色. 结合颜色变化和智能手机，开发了一种经济高效的实时检测方法，称为 RGB 分析方法，用于 CN− 含量的现场检测。此外，Cu2+ 和 CN- 的最低检测限可达 2 × 10-8 M 和 2.52 × 10-8 M，分别。测定实际水样中的 CN− 时获得了良好的回收率。