A chemosensor system has been developed for rapid and selective detection of cyanide. The sensory molecules have the donor–acceptor type of structure and are designed by tuning the LUMO level or their reactivity towards cyanide. This sensory system is able to selectively distinguish cyanide among fluoride and many other anions at micromolar concentrations and instantly detect cyanide at ambient temperatures with a detection limit down to 1.0 µM. Multiple sensory signals are available and can be used for both qualitative monitoring and quantitative determination of cyanide, including high-contrast visual color change, fluorescence quenching and enhancement in the visible and near-infrared spectral regions.
化学传感器系统已被开发用于快速、选择性地检测
氰化物。感觉分子具有供体-受体类型的结构,并通过调整 LUMO
水平或其对
氰化物的反应性来设计。该传感系统能够选择性地区分微摩尔浓度的
氟化物和许多其他阴离子中的
氰化物,并在环境温度下立即检测
氰化物,检测限低至 1.0 µM。多种传感信号可用于
氰化物的定性监测和定量测定,包括高对比度视觉颜色变化、可见光和近红外光谱区域的荧光猝灭和增强。