开发二氧化硫 (SO 2 ) 的高效吸附剂材料具有重要的工业意义。然而,由于SO 2的腐蚀性,传统的多孔材料通常表现出较差的可逆性和对SO 2吸附的吸收有限。在这里,我们报道了一系列 Cu(II)-羧酸盐基金属有机骨架材料对 SO 2的高吸附性。我们描述了配体官能化和开放金属位点对 SO 2吸附的吸收和可逆性的影响。具体而言,MFM-101和MFM-190(F)表现出完全可逆的SO 2吸附,在298 K和1 bar下分别具有18.7和18.3 mmol g –1的显着容量;前者代表了迄今为止报道的所有多孔固体中在环境条件下最高的SO 2可逆吸收。原位中子粉末衍射和同步加速器红外显微光谱能够直接可视化吸附的 SO 2分子的结合域以及主客体结合动力学。我们发现开放 Cu(II) 位点和配体功能化的结合,以及金属-配体笼的尺寸和几何形状,在增强 SO 2结合方面发挥着不可或缺的作用。
An expanded pyridyl-decorated MOF-505 analogue[Cu2(L)(H2O)2]·Gx (H4L = 5,5′-(pyridine-2,5-diyl)diisophthalic acid, G = solvent molecule) has been solvothermally synthesized and reported.
Four new coordination polymers based on a pyridinetetracarboxylate ligand: syntheses, structures and high CO<sub>2</sub>/CH<sub>4</sub> separation
作者:Tao Ding、Xiao-Xian Wang、Meng Zhang、Si-Meng Ou、Tian-Ju Hu
DOI:10.1039/c7ce00535k
日期:——
three-dimensional (3D) 3-fold interpenetrating architecture with (4·64·8)2(42·62·82) topology. Complex 2 possesses a 3D 2-fold interpenetrating framework based on binuclear Mn2 units with (412·63) topology. Both complexes 3 and 4 exhibit trinuclear 3D non-interpenetrating (4,8)-connected networks with (46)2(412·612·84) topology. The fluorescence properties of 1, 3 and 4 have been also measured. Importantly
A combined experimental and computational study of novel nanocage-based metal–organic frameworks for drug delivery
作者:Jian-Qiang Liu、Xue-Feng Li、Chu-Ying Gu、Júlio C. S. da Silva、Amanda L. Barros、Severino Alves-Jr、Bao-Hong Li、Fei Ren、Stuart R. Batten、Thereza A. Soares
DOI:10.1039/c5dt02171e
日期:——
investigate the molecular interactions during 5-FU adsorption to the three novel materials. The GCMC simulations reproduced the experimental trend with respect to the drug loading capacity of each material. They also provided a structural description of drug packing within the frameworks, helping to explain the load capacity and controlled release characteristics of the materials. 5-FU binding preferences
Two-photon processing presents a facile means to tailor the properties of materials in three-dimensions. A two-photon responsive metal-organicframework (MOF) has been realized through the incorporation of a photoactive linker into a MOF via a multivariate strategy. The resulting MOF exhibits a significant one-photon and two-photonexcitedfluorescence change in response to UV light and infrared femtosecond
Superprotonic conductivity of a 3D anionic metal-organic framework by synergistic effect of guest [Me2NH2]+ cations, water molecules and host carboxylates
作者:Xue-Jian Si、Jing Jia、Yu-Liang Bao、Ya-Pan Wu、Yunling Liu、Wen-Wen Dong、Jun Zhao、Dong-Sheng Li
DOI:10.1016/j.jssc.2021.122168
日期:2021.7
A new 3D anionic metal-organic framework material, namely, [Me2NH2]2[Cd3(L)]·2H2O (1, H4L = 2,5′-di(3′,5′-dicarboxylphenyl)pyridine) has been synthesized under solvothermal conditions and characterized by single crystal X-ray diffraction, PXRD, thermogravimetric analysis and proton conduction investigation. In 1, the adjacent Cd(II) ions are joined to form a trinuclear [Cd3(COO)8] secondary building