Facile fabrication formyl-tagged Zr-MOF and functionalized for Fe~(3+) fluorescence detection

摘要

Herein, a new UiO-66 analog designated as UiO-66-CHO was synthesized by appending formyl on the benzene linker and further modified with alpha-naphthylamine take advantage of covalent post-synthetic strategy. The alpha-naphthylamine functionalized MOF named UiO-66-CHO-alpha-NA has excellent fluorescence property and good dispersibility. As a fluorescence probe, UiO-66-CHO-alpha-NA exhibits a highly selectivity for the detection of Fe3+, meanwhile the 0.54 mu M detection limit is comparable to the other UiO-66 derived probes. At last, the absorption competition quenching mechanism of recognition was verified by the stability and UV-Vis absorption experiments.