37055-19-9Relevant articles and documents
Ligand controlled structure of cadmium(II) metal-organic frameworks for fluorescence sensing of Fe3+ ion and nitroaromatic compounds
Wang, Xia,Fan, Weidong,Zhang, Ming,Shang, Yizhu,Wang, Yutong,Liu, Di,Guo, Hailing,Dai, Fangna,Sun, Daofeng
, p. 801 - 805 (2019)
Three cadmium(II) metal-organic frameworks (MOFs) based on tetracarboxylate ligands, namely [Cd2(TTTA)(DMF)3]·2DMF (1), [Cd2(TB)(H2O)4]·3DMF·H2O (2) and [Cd(TEB)0.5]·2DMF·4H2O (3) have been designed and synthesized. Complex 1 is a 2-dimensional (2D) 3,4-connected network with 3,4L13 topology, complex 2 features a 3-dimensional (3D) 3,4-connected tfa topology with a 2-fold interpenetrating structure and complex 3 has a 3D 4-connected dia topology with a 4-fold interpenetrating structure. Interestingly, 2 exhibits permanent pores and selective adsorption of CO2 over CH4. In addition, 2 shows fluorescence sensing of Fe3+ ion and rapid detection of nitroaromatic compounds (NACs) through fluorescence quenching.
Synthesis, structure, computational modeling, and biological activity of two novel bimesitylene derivatives
Bahrin, Lucian G.,Clima, Lilia,Shova, Sergiu,Rosca, Irina,Cojocaru, Corneliu,Bejan, Dana,Sardaru, Monica C.,Marangoci, Narcisa,Lozan, Vasile,Rotaru, Alexandru
, p. 453 - 469 (2019)
Tetrazole- and nitrile-containing bimesitylene derivatives with potential use in coordination chemistry were synthesized and characterized, and their structural particularities are discussed. For the bimesitylene bistetrazole derivative, geometry optimization was carried out by quantum-chemical calculations using density functional theory together with vibrational frequencies, natural bond orbitals, and highest occupied molecular orbital (HOMO)–lowest unoccupied molecular orbital (LUMO) calculations. The newly synthesized bimesitylene derivatives were also evaluated for their antimicrobial activity against three different reference strains, namely Escherichia coli, Staphylococcus aureus, and Candida albicans.
Three-dimensional porphyrin-based covalent organic frameworks with tetrahedral building blocks for single-site catalysis
Liu, Yong,Yan, Xiaodong,Li, Tao,Zhang, Wen-Da,Fu, Qiu-Ting,Lu, Hui-Shu,Wang, Xuan,Gu, Zhi-Guo
supporting information, p. 16907 - 16914 (2019/11/14)
Two three-dimensional (3D) porphyrin covalent organic frameworks, PCOF-1 and PCOF-2, were synthesized via imine condensation of a planar porphyrin tetramine (TAPP or TABPP) and a rigid tetrahedral aldehyde based on the steric hindrance of 3,3′,5,5′-tetrakis(4-formylphenyl)bimesityl (TFBM). The structures of PCOF-1 and PCOF-2 were studied by FT-IR and 13C CP-MAS solid state NMR spectroscopy. Powder X-ray diffraction patterns revealed obvious crystallinity with two intense peaks at 3.28° and 3.75° for PCOF-1, and 2.63° and 2.98° for PCOF-2. Structural simulation confirmed their 3D rutile type (pts) topological structures with two different pore sizes. X-ray single crystal diffraction revealed a distorted tetrahedral structure for the building block TFBM with two dihedral angles of 119° and 107.8°, and a planar square structure for the model compound (MC) with an outspread angle of 176.5°. PCOF-1 and PCOF-2 exhibited Brunauer-Emmett-Teller (BET) surface areas of 316 and 234 m2 g-1, respectively. The morphologies of PCOF-1 and PCOF-2 were investigated by scanning electron microscopy and transmission electron microscopy methods. PCOF-1 and PCOF-2 showed a high thermal stability up to 420 °C without decomposition through thermogravimetric analysis (TGA), and high chemical stability with no obvious mass loss after three days of immersion in various solutions. Due to the large surface area and the appropriate pore size, PCOF-Fe exhibited excellent biocatalytic catalytic performance, while PCOF-Co exhibited good electrocatalytic activity towards oxygen evolution reactions. These results indicate that 3D porphyrin-based COFs constructed from the tetrahedral building block with steric hindrance are promising candidates for single-site catalysis.
