Four New Metal–Organic Supramolecular Networks Based on Aromatic Acid and Flexible Bis(imidazole) Ligand: Synthesis, Structures and Luminescent Properties

Gel-like Ag-Dicyandiamide Metal–Organic Supramolecular Network-Derived g-C3N4 for Photocatalytic Hydrogen Generation

“…Many researchers have suggested that the photocatalytic activity of g-C 3 N 4 can be improved by changing its precursors, including urea, melamine, dicyandiamide, cyanamide, thiourea, guanidine hydrochloride, and a mixture thereof; or by doping, loading, and incorporating metals and/or molecules. , Interestingly, metal–organic supramolecular networks (MOSNs) with high stability, controllable porosity, and chemical functionality have been widely explored for the assembly of well-defined and rigid molecular blocks . The hydrogen bonding and π–π interactions within the metal–ligand coordination can provide intermolecular forces to create self-assembled multi-dimensional architectures, and the well-designed MOSN has potential applications in the fields of catalysis, drug delivery systems, photonics, and separation . The metal–organic supramolecule possesses a metal–organic complex that can be easily linked or doped into a structure upon heat treatment, and the dissolution and recrystallization of metal–organic ligand complexes can be easily controlled by changing the reaction conditions, with the aim of preparing well-defined metal-containing materials.…”

Novel Co5 and Ni4 Metal Complexes and Ferromagnets by the Combination of 2-Pyridyl Oximes with Polycarboxylic Ligands

“…With the above in mind, we decided to explore further the reaction mixture of 2-pyridyl oximes and polycarboxylic acids, and, in particular, we introduced isonicotinic acid (pyridine-4-carboxylic acid) [ 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 ] and 3,5-pyrazole dicarboxylic acid [ 66 , 67 , 68 , 69 , 70 , 71 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 85 ] to the reaction system ( Scheme 1 ). Both carboxylic acids have been extensively investigated in the field of coordination compounds, and they have been proven a fruitful source of discrete metal complexes and coordination polymers; [ 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 ,…”