Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore, Singapore.
Institut Charles Gerhardt Montpellier UMR 5253 CNRS UM ENSCM, Université Montpellier, Pl. E. Bataillon, 34095, Montpellier cedex 05, France.
Angew Chem Int Ed Engl. 2019 Jun 11;58(24):8073-8077. doi: 10.1002/anie.201902738. Epub 2019 Apr 10.
Finding appropriate stimuli for controlling the breathing behavior of flexible metal-organic frameworks (MOFs) is highly challenging. Herein, we report the solvent-induced changes in the particle size and stability of different breathing phases of the MIL-53 series, a group of flexible MOFs. A water/dimethylformamide (DMF) ratio is tuned to synthesize members of the MIL-53 series which have different behaviors. The breathing is explored by high-pressure methane sorption tests. Increasing DMF concentration decreases MOF particle size and increases the stability of the porous phases, boosting the 5.8-65 bar sorption difference of methane, which is required for natural-gas delivery.
寻找合适的刺激来控制柔性金属-有机骨架（MOFs）的呼吸行为极具挑战性。在此，我们报告了 MIL-53 系列，即一组柔性 MOFs 的不同呼吸相的粒径和稳定性随溶剂变化的情况。通过调节水/二甲基甲酰胺（DMF）的比例来合成具有不同行为的 MIL-53 系列成员。通过高压甲烷吸附测试来探索呼吸现象。增加 DMF 浓度会减小 MOF 颗粒尺寸并增加多孔相的稳定性，从而提高甲烷的 5.8-65 bar 吸附差，这是输送天然气所必需的。
