Post-Synthetic Modification of Aerogels Made of Covalent Cross-linked Metal-Organic Polyhedra
Khobotov-Bakishev, Akim (Universitat Autònoma de Barcelona. Departament de Química)
Samanta, Partha (Institut Català de Nanociència i Nanotecnologia)
Roztocki, Kornel (Universitat Autònoma de Barcelona. Departament de Química)
Albalad, Jorge (Institut Català de Nanociència i Nanotecnologia)
Royuela, Sergio (Universidad Autónoma de Madrid. Departamento de Química Inorgánica)
Furukawa, Shuhei (Kyoto University. Department of Synthetic Chemistry and Biological Chemistry)
Zamora, Félix (Universidad Autónoma de Madrid. Departamento de Química Inorgánica)
Carné-Sánchez, Arnau (Universitat Autònoma de Barcelona. Departament de Química)
Maspoch Comamala, Daniel (Institut Català de Nanociència i Nanotecnologia)

Date:	2024
Abstract:	Aerogels are porous ultralight materials known for their high porosity, wide range of pore sizes, low density, and good macroscopic mechanical properties, all of which make them promising candidates for shaped adsorbents, catalysts, and insulators, among other applications. Here, this work reports a new approach that enables both the formation of modular aerogels, via dynamic covalent chemistry, and their post-synthetic modification, via coordination chemistry. To demonstrate this strategy, this work first polymerizes porous amino-functionalized Rh(II)-based metal-organic polyhedra (MOPs) with aldehydes, which afforded robust imine-gel networks that is then converted into aerogels. Next, this work functionalizes these aerogels through the coordination of ligands on the axial site of Rh(II) paddlewheels of the MOP. Interestingly, in this chemistry, the local changes in the coordination site of the MOPs are transferred to the overall aerogel, thereby altering its macroscopic physicochemical properties. Importantly, this feature enables the synthesis of optimized adsorbents tailored to specific guests, as this work demonstrates through a series of experiments using ligands of different electrostatic and hydrophobic characters.
Grants:	Agència de Gestió d'Ajuts Universitaris i de Recerca 2021/SGR-00458 Agencia Estatal de Investigación PID2019-106268GB-C32 Agencia Estatal de Investigación RTI2018-095622-B-I00 Agencia Estatal de Investigación TED2021-129886B-C42 Agencia Estatal de Investigación CEX2021-001214-S Agencia Estatal de Investigación RYC2020-029749-I
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	Advanced Functional Materials, Vol. 34, Issue 8 (February 2024) , art. 2312166, ISSN 1616-3028

DOI: 10.1002/adfm.202312166

6 p, 5.9 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles