Novel Pyrene-Based Anionic Metal–Organic Framework for Efficient Organic Dye Elimination

A novel anionic metal-organic framework, JUC-138, constructed by In(III) and a pyrene-based linker, H(8)TIAPy (H(8)TIAPy = 1,3,6,8 tetrakis(3,5-isophthalic acid)pyrene), has been synthesized by solvothennal reaction successfully. In JUC-138, only four carbonyl groups in each ligand connect to In3+ ions, while the others remain uncoordinated. However, each In3+ connects to four carbonyl groups in a bidentate chelate style, resulting In the formation of 2D square sheets in JUC-138. The 2D sheets interact with adjacent layers through the O-H...O hydrogen bonds': between the uncoordinated carboxyl groups, thus generating the whole 3D suprarnolecular structure, ofJUC-138. UV-vis tests show the energy gap E-g of JUC-138. is 3.34 eV, indicating the semiconductor nature Of JUC-138. In addition, JUC-138 Shows good photocatalytic activity in Azure B (AB) decolorization and could decompose 90% AB within 4 h. This photocatalytic property rnakes JUC-138 promising in environment governance.