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An Efficient Strategy for Activation of Metal−Organic Frameworks: Microwave Irradiation

An Efficient Strategy for Activation of Metal−Organic Frameworks: Microwave Irradiation
Lee, Eun JiBae, JinheeChoi, Kyung MinJeong, Nak Cheon
DGIST Authors
Jeong, Nak Cheon
Issue Date
2020 125th KCS Spring Meeting
Metal−organic frameworks (MOFs) are a highly crystalline porous material that are assembled coordination bonds between the metal ions or clusters and the multitopic organic linkers. To utilize of MOFs for the applications, for examples, gas uptake, molecular separation, drug delivery, sensor, electronic conductivity, ionic conductivity, and catalysis, an activation process to completely remove both coordinating molecules and pore-filling molecules from the Open coordination sites (OCSs) and the pores, respectively, is required.Until now, some of activation strategies have been developed: (i) thermal activation (by applying heat and vacuum; TA), (ii) solvent exchange, (iii) freeze-drying, (iv) supercritical CO2 exchange, and (v) chemical treatment. TA has been the most commonly used method for the removal of coordinating molecules from OCSs. However, TA has often shown negative influence on the structural integrity of the MOFs.Recently, we developed an efficient strategy of microwave activation(MA), which is conducted with microwave irradiation. The microwave irradiation of a MOF sample promotes the energy state of both the MOF and the solvent molecules in the pores of MOF to excited states, and subsequently, the excitation spontaneously leads to relaxation, with simultaneous emission of heat energy on the atomic scale. Therefore, in this presentation, We demonstrate that microwave activation is a simple way not only for the complete activation of MOFs but also for the structural integrity of.
Related Researcher
  • Author Jeong, Nak Cheon Supramolecular Inorganic Chemistry Laboratory
  • Research Interests Inorganic Chemistry; Metal-Organic Framework; Nanoporous Materials; Electron Transport;Ion Transport
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Department of Physics and ChemistrySupramolecular Inorganic Chemistry Laboratory2. Conference Papers

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