A new Azo-Schiff base ligand (H₂L) was designed and synthesized as a cation chemosensor. The chemosensor H₂L as dual chemosensor showed selective fluorescence recognition of Al³⁺ with a noticeable fluorescence enhancement and colorimetric detection of Co2 + in aqueous ethanol solution. The H₂L exhibits a linear response toward Al³⁺ ions in the concentration range of 1.91 × 10^–8 M to 4.8 × 10^–6 M with a limit of detection of 1.91 × 10^–8 M. The sensing mechanism of sensor H₂L toward Al³⁺ was investigated by 1H NMR and IR spectroscopies. Fluorescence switch based on the control of EDTA and Al³⁺ proved H₂L could act as a reversible chemosensor. The molecular structure of [NiL] complex has been determined by X-ray crystallography.

设计并合成了一种新型偶氮席夫碱配体 (H ₂ L) 作为阳离子化学传感器。作为双化学传感器的化学传感器 H ₂ L 显示出对 Al ³⁺的选择性荧光识别，在乙醇水溶液中具有显着的荧光增强和 Co2 + 的比色检测。H _{2 L 在 1.91 × 10} ^–8  M 到 4.8 × 10 ^–6 M的浓度范围内对 Al ³⁺离子表现出线性响应， 检测限为 1.91 × 10 ^–8  M。传感器 H 的传感机制₂ L 朝向 Al ³⁺通过 1H NMR 和 IR 光谱进行研究。基于EDTA和Al ³⁺控制的荧光开关证明H ₂ L可以作为可逆的化学传感器。[NiL] 络合物的分子结构已通过 X 射线晶体学确定。