1347748-56-4Relevant academic research and scientific papers
Selective CO2 capture and multiresponsive luminescent sensor in aqueous solutions of cadmium metal-organic framework based on trigonal rigid ligand
Yang, Jie,Zhang, Chen,Chen, Jia-Yin,Wei, Jia,Wang, Xiao-Qing
, (2021/11/22)
We report here a new fashioned cd-metal-organic framework (MOF) exhibiting a (5, 6)-connected 2-nodal net, [Cd3(LMe)(H2O)]·DMF·3H2O constituted by two different metal clusters and a trigonal rigid 6-connected ligand. The analytic reveal that complex is a 3D structure. Each (LMe)6? ligand is linked to five dinuclear SBUs, which forms a 2D lay, and Cd1 ions are linked by two different deprotonated carboxylates to construct a 3D porous framework. IAST manifested that the selectivity coefficients under 1 bar for the N2/CO2 (85: 15) and CH4/CO2 (50: 50) compounds were 86 and 6 at 273 K, respectively. Complex exhibited selectivity of CO2 relative to N2 and CH4 upon removal of solvates. Moreover, the complex caused emission quenching in the existence of Fe3+, MnO4? and CHCl3 organic solvent molecules. The multi-response fluorescence probe has lofty sensitivity and low limit of detection in the existence of Fe3+ and MnO4?. It thus appears that the Cd-MOF is not only a useful strategy for CO2 capture, but a fluorescent transducer for simultaneous exploration of organic solvent, metal ions and inorganic anions.
Modifying cage structures in metal-organic polyhedral frameworks for H 2 storage
Yan, Yong,Blake, Alexander J.,Lewis, William,Barnett, Sarah A.,Dailly, Anne,Champness, Neil R.,Schroeder, Martin
, p. 11162 - 11170 (2011/11/06)
Three isostructural metal-organic polyhedral cage based frameworks (denoted NOTT-113, NOTT-114 and NOTT-115) with (3,24)-connected topology have been synthesised by combining hexacarboxylate isophthalate linkers with {Cu 2(RCOO)4} paddlewheels. All three frameworks have the same cuboctahedral cage structure constructed from 24 isophthalates from the ligands and 12 {Cu2(RCOO)4} paddlewheel moieties. The frameworks differ only in the functionality of the central core of the hexacarboxylate ligands with trimethylphenyl, phenylamine and triphenylamine moieties in NOTT-113, NOTT-114 and NOTT-115, respectively. Exchange of pore solvent with acetone followed by heating affords the corresponding desolvated framework materials, which show high BET surface areas of 2970, 3424 and 3394 m 2 g-1 for NOTT-113, NOTT-114 and NOTT-115, respectively. Desolvated NOTT-113 and NOTT-114 show high total H2 adsorption capacities of 6.7 and 6.8 wt %, respectively, at 77 K and 60 bar. Desolvated NOTT-115 has a significantly higher total H2 uptake of 7.5 wt % under the same conditions. Analysis of the heats of adsorption (Qst) for H2 reveals that with a triphenylamine moiety in the cage wall, desolvated NOTT-115 shows the highest value of Qst for these three materials, indicating that functionalisation of the cage walls with more aromatic rings can enhance the H2/framework interactions. In contrast, measurement of Qst reveals that the amine-substituted trisalkynylbenzene core used in NOTT-114 gives a notably lower H 2/framework binding energy. Copyright
