Multifunctional Inorganic‐Organic U‐MOF Materials with Nitrogen Heterocyclic Carboxylate: Synthesis, Structure and Properties

Abstract Two uranyl MOF complexes [(UO 2 ) 2 (TTHA)]⋅[NH 2 (CH 3 ) 2 ] 2 ⋅(H 2 O) 3 ( 1 ) (H 6 TTHA=1,3,5‐triazine‐2,4,6‐triamine hexa acetic acid) and (UO 2 )(HL) 2 (H 2 O) 2 ( 2 ) (L=5‐methyl‐1‐(4‐carboxylphenyl)‐1H‐1,2,3‐triazole‐4‐carboxylic acid) were synthesized by the reaction of uranyl acetate as the metal source with H 6 TTHA and triazole‐carboxylic acid (L) as the ligand, respectively. They were characterized by elemental analysis, IR, UV‐Vis, PXRD, single crystal X‐ray diffraction and thermal gravimetric analysis. The structural analysis showed that complexes 1 and 2 were covalent inorganic‐organic framework structures. The complex 1 exhibited a self‐assembly 3D structure and 2 was a 2D supramolecular structure by the hydrogen bonding interaction. In order to explore their functional properties, their photoluminescence, surface photovoltage and dye adsorption properties have been also studied and discussed initially. The results showed that complexes 1 , 2 exhibited some features in dye adsorption.