以水合肼和4-(二乙氨基)水杨醛为原料,通过席夫碱反应合成了Cu~(2+)荧光探针。采用荧光和紫外等方法研究了其对金属离子的识别性能。结果表明,该探针在80%(V/V)的乙醇水溶液中对Cu~(2+)有较好的选择性、灵敏度并可裸眼识别,检测限为0.32 nmol/L。 Hydrazine hydrate and 4- (diethylamino) salicylaldehyde as raw materials, the Schiff base reaction was synthesized Cu ~ (2+) fluorescence probe. Fluorescence and UV methods were used to study the recognition of metal ions. The results show that the probe has good selectivity and sensitivity to Cu 2+ in 80% (V / V) aqueous ethanol solution with a detection limit of 0.32 nmol / L.