以甘氨酸与5-氯水杨醛为原料，构建了一种高效的席夫碱Zn²⁺荧光探针分子L，结构由¹HNMR和¹³CNMR进行了表征，性能通过光谱实验进行了研究。光谱分析实验结果表明，探针分子L对Zn²⁺具有出色的选择性和灵敏度，在0~14 μmol/L浓度范围内，体系荧光强度与Zn²⁺浓度呈线性关系，检出限为13.72 nmol/L，在365 nm紫外灯下裸眼观察到明显的荧光颜色变化，可实现Zn²⁺可视化检测。通过Job曲线和DFT理论计算对识别机理进行了研究，结果表明，探针分子L与Zn²⁺以摩尔比2∶1结合。此外，水样检测实验表明探针分子L具有应用于检测实际水样中Zn²⁺的潜力。

A novel efficient Schiff-base fluorescent probe L is synthesized from glycine and 5-chlorosalicylaldehyde, and characterized by means of ¹H-NMR and ¹³C-NMR.Its performance is studied by means of spectral experiments.It is verified that the probe L shows excellent selective and sensitive to Zn²⁺.There is a good linear relationship between the fluorescence intensity of probe L and the concentration of Zn²⁺ in a range of 0 to 14 μmol·L^-1.The detection limit is 13.72 nmol·L^-1.Visible color change can be observed with the naked eye under the ultraviolet lamp, which can realize the visual detection of Zn²⁺.The recognition mechanism is explored through Job curve and DFT theoretical calculation, and the results show that the probe molecule L complexes with Zn²⁺ in a molar ratio of 2:1.Moreover, it is verified through water sample tests that probe L can be used to detect Zn²⁺ in actual water samples.

赖倪(2002-),女,本科生。