Synthesis, crystal structure, photoluminescence property and photoelectronic behavior of two uranyl-organic frameworks constructed from 1, 2, 4, 5-benzenetetracarboxylic acid as ligand

Abstract By using 1, 2, 4, 5-benzenetetracarboxylic acid as organic ligands, two uranyl coordination complexes, (UO 2 ) 2 (bta)(DMA) 2 ( 1 ) and [(UO 2 ) 2 (bta)(μ 3 -OH 2 )]·2[HN(CH 3 ) 2 ]·H 2 O ( 2 ) (H 4 bta = 1, 2, 4, 5-benzenetetracarboxylic acid, DMA = N,N-Dimethylacetamide) were synthesized. The X-ray single crystal analysis revealed that complex 1 exhibits a 3-demensional framework, while complex 2 exhibits a 2-demensional framework. In order to furthermore characterize the two complexes and extend their functional properties, spectroscopies of IR, UV–vis, photoluminescence and surface photovoltage were also studied primarily. In addition, thermogravimetric analyses and photocatalytic studies for complexes 1 and 2 were discussed in detail.