【摘要】 以2-氨基芴和邻香草醛为原料，成功合成了席夫碱荧光探针2-氨基芴缩邻香草醛（L）并对其进行了光谱和结构表征。实验结果表明，该探针的荧光强度与Zn²⁺浓度在1×10^-5～15×10^-5 mol·L^-1具有良好的线性关系，检测限可达4.32×10^-8 mol·L^-1。通过Job曲线确定L-Zn²⁺配位比为2∶1,由Benesi-Hildebrand方程得出L-Zn²⁺配位常数为2.2×10⁸。L与Zn²⁺配位后有效改善了略扭曲的L分子的共平面性，荧光性能较L大大增强。因此，荧光探针L可实现裸眼识别Zn²⁺,抗干扰性良好，灵敏度高，合成及检测方法简便可靠，为检测环境体系中的Zn²⁺提供了依据。更多还原

【Abstract】 A Schiff base fluorescence probe 2-aminofluorene o-vanillin（L） was synthesized by 2-aminofluorene and o-vanillin, and its spectroscopy and molecule structure were characterized successfully. The experimental results indicated that the fluorescence intensity of the probe had a good linear relationship with the concentration of Zn²⁺ in the range of 1×10^-5 to 15×10^-5 mol·L^-1, and the detection limit was 4.32×10^-8 mol·L^-1.The coordination ratio of L-Zn²⁺was determined to be 2∶1 through the Job curve, and the coordination constant of L-Zn²⁺ was determined to be 2.2×10⁸ based on the Benesi Hildebrand equation. The coordination of L and Zn²⁺ effectively improved the coplanarity of the slightly twisted L molecule, and the fluorescence properties were greatly enhanced compared with L. Therefore, the fluorescence probe L had strong anti-interference ability and high sensitivity to detect Zn²⁺ easily with eyes. Its synthesis and detection method was simple and reliable, providing a basis for detecting Zn²⁺ in environmental system.更多还原