High-selectivity turn-on fluorescence-based fluoride ion detection using histidine-functionalized UiO-66-NH₂.

ABSTRACT: Hisditine-functionalized UiO-66-NH₂ (UiO-66-NH₂@Hst) as a novel "turn-on" fluorescent probe to detect fluoride ions has been successfully synthesized using the solvothermal method. The results showed that fluoride ion detection gave the best fluorescence response in water media and no response was observed in non-polar solvents. Detection at pH 3-10 produces a relatively similar fluorescence response and decreases quite significantly at pH 11-13. UiO-66-NH₂@Hst is very selective and stable towards fluoride ions as evidenced by the appearance of blue luminescence under UV light (λ ₃₆₅ nm) compared to other ions. A possible mechanism for detecting fluoride ions is through the formation of hydrogen bonds, which results in incremental electron

SUBMITTER: Rizal B M 

PROVIDER: S-EPMC11440354 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature