Fluorescence Modulation in UiO-66-NH₂ via Photooxidation and Selective Reduction.

ABSTRACT: Metal-organic frameworks with emissive ligands offer tunable photophysical properties that are sensitive to their coordination environment and structural configuration. In this study, we demonstrate that the fluorescence of UiO-66-NH₂ can be modulated through photo-oxidation-induced quenching and subsequent solvent-mediated recovery. Upon visible-light irradiation, reactive oxygen species induce two distinct oxidation pathways: irreversible oxidation of the ligand and reversible oxidation of the metal-oxo cluster. These redox events lead to partial disruption of the coordination environment and result in fluorescence loss. Reduction using mild alcohols selectively removes adsorbed oxidative species from Zr₆O₄(OH)₄, leading to partial recovery of

SUBMITTER: Ahn Y 

PROVIDER: S-EPMC12461390 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature