当前位置: X-MOL 学术Dalton Trans. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Increase of network hydrophilicity from sql to lvt supramolecular isomers of Cu-MOFs with the bifunctional 4-(3,5-dimethyl-1H-pyrazol-4-yl)benzoate linker.
Dalton Transactions ( IF 3.5 ) Pub Date : 2020-09-03 , DOI: 10.1039/d0dt02642e
Saskia Menzel 1 , Simon Millan 1 , Simon-Patrick Höfert 1 , Alexander Nuhnen 1 , Serkan Gökpinar 1 , Alexa Schmitz 1 , Christoph Janiak 1
Affiliation  

The bifunctional linker 4-(3,5-dimethyl-1H-pyrazol-4-yl)benzoic acid (H2mpba) was used for the synthesis of new (square lattice) sql 2D metal–organic frameworks (MOFs) [Cu(Hmpba)2]·L (L = DMF or ACN) in a solvent-mixture of dimethylformamide/water and acetonitrile/water. These sql 2D MOFs are supramolecular isomers of the lvt 3D network [Cu(Hmpba)2]·4MeOH·1H2O (lvt-MeOH) that was synthesized previously by Richardson and co-workers. All these frameworks are potentially porous structures with solvent molecules included in the channels of the as synthesized materials. After activation all three materials showed good CO2 adsorption capacity, demonstrated here for lvt-MeOH for the first time, with a saturation uptake of 113 cm3 g−1 (lvt-MeOH-act.), 111 cm3 g−1 (sql-DMF-act.) and 90 cm3 g−1 (sql-ACN-act.) at 195 K. The flexibility of the lvt-MeOH-act. network is evidenced by a gate-opening effect seen in the CO2 measurement at 195 K and under gravimetric high-pressure CO2 adsorption. According to the water and ethanol sorption measurements the new sql frameworks can be categorized as hydrophobic materials in contrast to the hydrophilic lvt framework. In the lvt-MeOH structure the crystal solvent can be replaced with water to yield the structurally authenticated water-only network lvt-H2O containing 3D arrays of S4-symmetric (H2O)20 clusters.

中文翻译:

具有双功能4-(3,5-二甲基-1H-吡唑-4-基)苯甲酸酯连接基的Cu-MOF从sql到lvt超分子异构体的网络亲水性增加。

双功能接头4-(3,5-二甲基-1 H-吡唑-4-基)苯甲酸(H 2 mpba)用于合成新的(方格)sql 2D金属-有机骨架[MOF] (Hmpba)2 ]·L(L = DMF或ACN)在二甲基甲酰胺/水和乙腈/水的溶剂混合物中。这些sql 2D MOF是lvt 3D网络[Cu(Hmpba)2 ]·4MeOH·1H 2 O(lvt-MeOH)是先前由Richardson及其同事合成的。所有这些框架都是潜在的多孔结构,溶剂分子包含在合成材料的通道中。活化后,所有三种材料均显示出良好的CO 2吸附能力,此处首次证明是lvt -MeOH,饱和吸收量为113 cm 3 g -1lvt -MeOH-act。),111 cm 3 g -1lvt -MeOH-act。)。sql -DMF-act。)和190 K时90 cm 3 g -1sql -ACN-act。)。lvt的灵活性-MeOH-作用。通过在195 K和在重力高压CO 2吸附下的CO 2测量中看到的开门效应证明了该网络。根据对水和乙醇的吸附测量,与亲水lvt框架相比,新的sql框架可归为疏水性材料。在LVT -MeOH结构的晶体溶剂可以与水置换,得到结构验证的水只互联LVT -H 2含有的三维阵列ö小号4 -对称(H 2 O)20簇。
更新日期:2020-09-22
down
wechat
bug