CHEN, D.; WU, M.-K.; HAN*, L.; JIANG, H.-L.; ChemPlusChem 81 (2016) 8, 675-690, http://dx.

A series of highly luminescent-active metal-organic frameworks (MOFs) 1-3 with hierarchical pores have been rationally constructed and fully characterized. The predesigned semi-rigid hexacarboxylate ligand hexa[4-(carboxyphenyl)oxamethyl]-3-oxapentane acid (H6 L) has been adapted with various space-directed N donors (i.e., 2,2'-bipyridine, 4,4'-di(1H-imidazol-1-yl)-1,1'-biphenyl, and 1,3,5-tri(1H-imidazol-1-yl)benzene) from a bidentate V-shape to a tridentate Y-shape. This family of multifunctional MOF materials represents a variety of potential applications in the following aspects: first, as luminescent sensors that show a fast and sensitive detection for pollutant CrO4 (2-) and Cr2 O7 (2-) ions in aqueous media; second, as adsorbents that can rapidly remove harmful organic dyes; third, as an antenna that can effectively sensitize visible-light-emitting Tb(3+) ions. These multifunctional MOF materials combine optical-sensing, adsorption, and sensitization properties, thus are very useful in many potential applications. Furthermore, these materials have proved to be reusable.

metal-oxo units) coordinating with electron-donating organic ligands. These hybrid materials have received broad concern because MOFs can be rationally synthesized with high porosities, large internal surface areas, uniform but adjustable pore sizes and structures. MOFs exhibit a tremendous growth, in terms of numerous structures, fascinating topological nets, and various application including gas storage and separation, [9][10][11][12][13][14][15][16][17][18][19][20][21] catalysis, [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37] sensor, [38][39][40][41] drug delivery, [42,43] luminescence, [44,45] and others. [46][47][48][49][50][51][52][53][54][55][56][57][58][59][60] Apart from these applications, in recent years, there is an increasing interest in discovering the electrochemical applications in the field of supercapacitors, batteries and fuel cells, hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR), electrochemical decomposition of highly oxidizing and toxic compounds, electrochemical sensors, etc.In view of the ever-growing energy demand as well as the increasing serious environmental crisis caused by the combustion of traditional fossil fuels, the pursuit of renewable energy sources resorting to the sunshine and wind, along with storage technologies, has always been a hot research subject. The intermittent feature of solar and wind sources limits their applied range, thus the effective energy storage technology is becoming a tremendous need to put electronic equipment into operation and provide electrical transportation power for commuters. Energy storage resorting to electrochemistry is thought to be one of the most promising candidates for energy storage. MOFs possess their particular advantages, in comparison with other types of porous materials including active carbon, zeolites. By selecting different metal ions and organic bridging linkers, MOFs constructed can meet the requirements of particular application through the predesign and postsynthesis methods. Various MOFs and MOF composites have been successfully used in the electrochemical areas. Moreover, MOFs as the sacrificial materials have been converted to various nanostructures, such as porous carbon, metal nanoparticles, metal oxides, and their composites with different treatments. These nanostructures with the maximum exposure of active sites inherit high surface area of MOF precursors to some extent and exhibit good performance as electrodes. For MOF-derived nanoporous functional materials, a number of reviews [61][62][63][64][65][66][67] and reports [68][69][70][71][72][73][74][75][76][77][78][79][80][81] have been published, which provided As a youthful family of crystalline porous materials, metal-organic frameworks (MOFs), assembled by inorganic vertices (metal ions or clusters) and organic ligands, feature ultrahigh porosity, high surface area, and synthetic and structural tailorability, along with relatively easy synthesis, making them excellent candidates for a large ...

Nanorods-composed yolk-shell bimetallic-organic frameworks microspheres are successfully synthesized by a one-step solvothermal method in the absence of any template or surfactant. Furthermore, hierarchical double-shelled NiO/ZnO hollow spheres are obtained by calcination of the bimetallic organic frameworks in air. The NiO/ZnO hollow spheres, as supercapacitor electrodes, exhibit high capacitance of 497 F g(-1) at the current density of 1.3 A g(-1) and present a superior cycling stability. The superior electrochemical performance is believed to come from the unique double-shelled NiO/ZnO hollow structures, which offer free space to accommodate the volume change during the ion insertion and desertion processes, as well as provide rich electroactive sites for the electrochemical reactions.