A Series of New Eu/Tb Mixed MOFs with Tunable Color Luminescence
Authors:
Open Access
- 22 November 2017
- journal article
- research article
- Published by Wiley in Zeitschrift für anorganische und allgemeine Chemie
- Vol. 644 (1) , 43-49
Abstract
Two isostructural lanthanide metal‐organic frameworks [Ln‐MOFs, Ln = Tb (1), Eu (8)] containing oxalic acid ligand with green, red luminescence were solvothermally synthesized. A series of Eu/Tb mixed MOFs (2–7), (C5H6N)2[EuxTb2–x(H2O)2(C2O4)4]·2H2O, were designed and obtained, which displayed highly tunable luminescence color by adjusting the excitation wavelength. Complexes 1–8 were characterized by IR, elemental analysis, ICP, powder XRD, and TG measurements. The quantum yields of the complexes 1–8 range from 6.89 to 4.15 %, whereas the fluorescence lifetime of 1–8 varies between 1.12 and 0.87 ms. Therefore, with the increase of the molar ratio of Eu, the quantum yields and fluorescence lifetime of the complexes 1–8 gradually decrease.Keywords
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