Abstract
A luminescent lanthanide metal-organic framework (Ln-MOF) thin film of Terbium-Succinate (Tb-SA) was fabricated via one-step electrodeposited onto fluorine-doped tin oxide (FTO) conductive glass under mild condition. The composition of the film was confirmed by powder X-ray diffraction. The morphology was examined by SEM and reveal flower-shaped thin sheet clusters on the surface. The photoluminescence experiment suggests that Tb-SA films exhibits characteristic luminescence of Tb3+ ion, and presents highly eye-detectable luminescent response for Cu2+ ion in aqueous solution. The variations of luminescent intensities are interrelated to the concentration of Cu2+ ion and well-fit with the Stern–Volmer equation over the range of 1×10−4–1×10−3M. Furthermore, the film can be used as facile sensor directly for sensing of 0.1mM Cu(II) in water by naked-eyes under UV-light. The potential quench mechanism was discussed.
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