Photoluminescence properties of Gd(III) and Ce(III) lanthanide based metal organic frameworks

Authors : Yasemin Acar

Pages : 754-765

Doi:10.18038/aubtda.267272

View : 14 | Download : 8

Publication Date : 2016-12-01

Article Type : Research Paper

Abstract :The Gdinsert ignore into journalissuearticles values(III); and Ceinsert ignore into journalissuearticles values(III); based-MOFs insert ignore into journalissuearticles values(metal organic frameworks); have been synthesized by hydrothermal method using 1,2,4,5­benzenetetracarboxylate insert ignore into journalissuearticles values(btec); ligand and characterized by elemental analysis, FT-IR, UV-visible and single-crystal X-ray diffraction. The crystal structure analysis of Gdinsert ignore into journalissuearticles values(III); complex [C 10 H 9 GdO 11 ] insert ignore into journalissuearticles values( 1 ); and Ce insert ignore into journalissuearticles values(III); complex [C 10 H 5 CeO 9 ] insert ignore into journalissuearticles values( 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. 
Keywords : Metal Organic Frameworks, Lanthanide Complexes, Structural Analysis, Photoluminescence Properties