A simple Schiff base fluorescent probe (SW) composed of oxime and salicylaldehyde units was designed and synthesized. The probe has high selectivity and sensitivity for Zn²⁺ ion in mixed solvent (DMSO/H₂O, V/V = 9:1). The fluorescence has obvious redshift phenomenon and visible color change. The stoichiometric ratio of the probe to Zn²⁺ ion was confirmed to be 1:2 (mole) by ¹H NMR, MS analysis and job curves. And the detection limit of fluorescence response of the SW to Zn²⁺ is down to 2.53 × 10^–8 mol/L. At the same time, the probe SW can be applied to the test paper detection of Zn²⁺ ions under 365 nm UV light and the detection of Zn²⁺ ions in actual water samples.

设计并合成了一种由肟和水杨醛单元组成的简单席夫碱荧光探针 (SW)。该探针对混合溶剂 (DMSO/H ₂ O, V/V = 9:1) 中的Zn ²⁺离子具有高选择性和灵敏度。荧光有明显的红移现象和可见的颜色变化。通过¹ H NMR、MS 分析和工作曲线证实探针与Zn ²⁺离子的化学计量比为1:2（摩尔）。SW对Zn ²⁺的荧光响应检测限降至2.53 × 10 ^–8  mol/L。同时，探针SW可以应用于Zn构成的试纸检测²⁺下365nm的UV光及Zn的检测离子²⁺ 实际水样中的离子。