设计合成了2种以香豆素为荧光团、酰腙为识别基团的双香豆素双酰腙类荧光探针,并对其进行了结构表征及光谱性能研究.结果 表明,探针对Cu2+具有高选择性和高灵敏度,表现出明显的荧光猝灭效应,探针与Cu2+以1∶2的结合比相互作用,对Cu2+检测限为10-9mol/L.“,”Two fluorescent probes,(N1'E,N3'E)-N1',N3'-bis ((7-N,N-diethylaminocoumarin-3-yl)methylene) malonohydrazide and (N1'E,N4'E)-N1',N4'-bis ((7-N,N-diethylaminocoamarin-3-yl) methylene)succinohydrazide,bearing acylhydrazone group as binding site and coumarin group as the fluorescence signal group were synthesized and characterized by conventional techniques.These probes showed notable fluorescence turn-off response for Cu2+ over other metals ions.The probes and Cu2+ formed 1 ∶ 2 coordination complexes according to spectroscopy data and Job's plots.Further study demonstrated that the detection limit of Cu2+for the probes was as low as 10-9 mol/L.