以1,8-萘酐、N,N-二甲基乙醇胺、三乙烯四胺为原料，通过酰亚胺化、缩合等反应，合成一种萘酰亚胺荧光探针，并通过核磁氢谱、红外光谱结构表征，测定了探针在乙醇与水的混合溶液中的荧光光谱。考察了金属离子浓度等因素的影响，对其配位机理进行了研究。结果显示，目标产物在乙醇-水溶液中对Fe3+表现出了专属选择性识别性能，在(1.87~ 6.53)×10-6 g/mL 的Fe3+浓度范围内，探针荧光强度与 Fe3+浓度有很好的线性关系，线性相关系数R=0.995 3，检出限为405.1 ng/mL。

A naphthalimide fluorescent probe was synthesized using 1,8-naphthalene anhydride, N,N-dimethylethanolamine and triethylene tetramine as raw materials and characterized by 1H NMR and IR spectra. The fluorescence spectra of the fluorescent probe in ethanol/water mixed solution were measured. The influence of metal ion concentration on the fluorescence intensity was investigated, and the proposed mechanism between the probe molecule and Fe3+was studied. The results demonstrate that the target product shows the exclusive recognition performance to Fe3+ in ethanol/water mixed solution. When the concentration of Fe3+ is in the range of (1.87~6.53)×10-6 g/mL, the fluorescence intensity of the probe has good linearly relationship with the concentration of Fe3+. The linear correlation coefficient R is 0.995 3, and the detection limit is 405.1 ng/mL.