Light-induced MOF synthesis enabling composite photothermal materials

Light-induced MOF synthesis enabling composite photothermal materials

07 February 2024 | Ofir Shelonchik, Nir Lemcoff, Ran Shimoni, Aritra Biswas, Elad Yehezkel, Doron Yesodi, Idan Hod & Yossi Weizmann
This article presents a novel method for the rapid synthesis of metal-organic frameworks (MOFs) using light-induced plasmonic photothermal capabilities of bipyramidal gold nanoparticles (AuBPs). The method is demonstrated by synthesizing four different MOFs using three different wavelengths (520 nm, 660 nm, and 850 nm). The generality of the photo-induced method is confirmed by synthesizing UiO-66, MIL-88A, HKUST-1, and MOF-5 using various photothermal agents. The study shows that the photothermal synthesis is significantly faster compared to conventional solvothermal methods, with all reactions achieving overnight yields within 20 minutes. The presence of AuBPs can be controlled by regulating the light exposure, allowing for their embedding in the MOF or maintaining them in the supernatant. Notably, the AuBP@UiO-66 composite retains its plasmonic properties and surface area, demonstrating significant light-induced heating response for ultrafast desorption and MOF activation. The photothermal MOF exhibits excellent stability and can be repeatedly activated, making it a versatile material for various applications.This article presents a novel method for the rapid synthesis of metal-organic frameworks (MOFs) using light-induced plasmonic photothermal capabilities of bipyramidal gold nanoparticles (AuBPs). The method is demonstrated by synthesizing four different MOFs using three different wavelengths (520 nm, 660 nm, and 850 nm). The generality of the photo-induced method is confirmed by synthesizing UiO-66, MIL-88A, HKUST-1, and MOF-5 using various photothermal agents. The study shows that the photothermal synthesis is significantly faster compared to conventional solvothermal methods, with all reactions achieving overnight yields within 20 minutes. The presence of AuBPs can be controlled by regulating the light exposure, allowing for their embedding in the MOF or maintaining them in the supernatant. Notably, the AuBP@UiO-66 composite retains its plasmonic properties and surface area, demonstrating significant light-induced heating response for ultrafast desorption and MOF activation. The photothermal MOF exhibits excellent stability and can be repeatedly activated, making it a versatile material for various applications.
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