Photothermal Activation of Metal-Organic Frameworks Using a UV-Vis Light Source.
Metal-organic frameworks (MOFs) usually require meticulous removal of the solvent molecules to unlock their potential porosity. Herein, we report a novel one-step method for activating MOFs based on the photothermal effect induced by directly irradiating them with a UV-vis lamp. The localized light-to-heat conversion produced in the MOF crystals upon irradiation enables a very fast solvent removal, thereby significantly reducing the activation time to as low as 30 min and suppressing the need for time-consuming solvent-exchange procedures and vacuum conditions. This approach is successful for a broad range of MOFs, including HKUST-1, UiO-66-NH2, ZIF-67, CPO-27-M (M = Zn, Ni, and Mg), Fe-MIL-101-NH2, and IRMOF-3, all of which exhibit absorption bands in the light emission range. In addition, we anticipate that this photothermal activation can also be used to activate covalent organic frameworks (COFs).
['Espín|Jordi|J|', 'Garzón-Tovar|Luis|L|http://orcid.org/0000-0003-0253-4041', 'Carné-Sánchez|Arnau|A|', 'Imaz|Inhar|I|http://orcid.org/0000-0002-0278-1141', 'Maspoch|Daniel|D|http://orcid.org/0000-0003-1325-9161']
activation photothermal effect UV−vis light metal−organic framework permanent porosity