Preparation of functionalized Eu < 3 + >-coated UiO-66-FDC fluorescent probe and detection application of functionalized Eu < 3 + >-coated UiO-66-FDC fluorescent probe to tryptophan

The invention belongs to the technical field of fluorescent sensors, and particularly relates to preparation of a functionalized Eu < 3 + >-coated UiO-66-FDC fluorescent probe and detection application of the functionalized Eu < 3 + >-coated UiO-66-FDC fluorescent probe to tryptophan, the Ln-MOF fluorescent probe Eu < 3 + >-coated UiO-66-FDC is synthesized through post-functional modification, and the Eu < 3 + >-coated UiO-66-FDC has a relatively wide linear range (0-1000 [mu] M), a low detection line (0.29 [mu] M) and relatively short response time (1 min). The probe can specifically recognize tryptophan in all natural amino acids, shows high selectivity and high sensitivity, can be used for detecting tryptophan in rabbit serum and milk samples, has high recovery rate, is proved to be a recyclable material, and can be used for detecting tryptophan in organisms and food. 本发明属于荧光传感器技术领域，具体涉及一种功能化Eu3+@UiO-66-FDC荧光探针的制备及其对色氨酸的检测应用，通过后功能化修饰合成Ln-MOF荧光探针Eu3+@UiO-66-FDC，Eu3+@UiO-66-FDC有着比较宽的线性范围(0-1000μM)，低检测线(0.29μ