The Gd(III) and Ce(III)
based-MOFs (metal organic frameworks) have been synthesized by hydrothermal
method using 1,2,4,5benzenetetracarboxylate (btec) ligand and characterized by
elemental analysis, FT-IR, UV-visible and single-crystal X-ray diffraction. The
crystal structure analysis of Gd(III) complex [C10H9GdO11]
(1) and Ce (III) complex [C10H5CeO9]
(2) show that the central lanthanide
ions are coordinated by nine oxygen atoms in which eight O atoms from btec
ligands and one O atom from water molecule for both structures. The nearest
non-bonding Gd···Gd distance is 3.928 Å while Ce···Ce distance is 4.392 Å.
Complex 1 and 2 bridged by oxygen atoms of btec ligands are formed in 3D networks
via strong hydrogen bonds. Additionally, solid state photoluminescence
properties of 1 and 2 at room temperature have been
investigated. Under the excitation of UV light, intense cyan-blue emission for complex
1 and blue emission for complex 2 are exhibited in the visible regions.
Metal-Organic Frameworks Lanthanide Complexes Structural Analysis Photoluminescence Properties
Subjects | Engineering |
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Journal Section | Articles |
Authors | |
Publication Date | December 1, 2016 |
Published in Issue | Year 2016 Volume: 17 Issue: 4 |