Ordered Transfer from 3D-Oriented MOF Superstructures to Polymeric Films: Microfabrication, Enhanced Chemical Stability, and Anisotropic Fluorescent Patterns.

Autor: Brandner LA; Institute of Physical and Theoretical Chemistry, Graz University of Technology, Graz, 8010, Austria., Marmiroli B; Institute of Inorganic Chemistry, Graz University of Technology, Graz, 8010, Austria., Linares-Moreau M; Institute of Physical and Theoretical Chemistry, Graz University of Technology, Graz, 8010, Austria., Barella M; Department of Physics, Faculty of Science and Medicine, University of Fribourg, Chemin du Musée 3, PER 08, Fribourg, CH-1700, Switzerland., Abbasgholi-Na B; CNR-IOM - Istituto Officina dei Materiali, SS 14, Basovizza, Trieste, 34149, Italy., Velásquez-Hernández MJ; Institute of Physical and Theoretical Chemistry, Graz University of Technology, Graz, 8010, Austria., Flint KL; Department of Chemistry, School of Physics, Chemistry and Earth Sciences, The University of Adelaide, Adelaide, SA, 5005, Australia., Dal Zilio S; CNR-IOM - Istituto Officina dei Materiali, SS 14, Basovizza, Trieste, 34149, Italy., Acuna GP; Department of Physics, Faculty of Science and Medicine, University of Fribourg, Chemin du Musée 3, PER 08, Fribourg, CH-1700, Switzerland., Wolinski H; Institute of Molecular Biosciences, Field of Excellence BioHealth, University of Graz, Graz, 8010, Austria., Amenitsch H; Institute of Inorganic Chemistry, Graz University of Technology, Graz, 8010, Austria., Doonan CJ; Department of Chemistry, School of Physics, Chemistry and Earth Sciences, The University of Adelaide, Adelaide, SA, 5005, Australia., Falcaro P; Institute of Physical and Theoretical Chemistry, Graz University of Technology, Graz, 8010, Austria.
Jazyk: angličtina
Zdroj: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2024 Nov; Vol. 36 (46), pp. e2404384. Date of Electronic Publication: 2024 Jul 08.
DOI: 10.1002/adma.202404384
Abstrakt: Films and patterns of 3D-oriented metal-organic frameworks (MOFs) afford well-ordered pore structures extending across centimeter-scale areas. These macroscopic domains of aligned pores are pivotal to enhance diffusion along specific pathways and orient functional guests. The anisotropic properties emerging from this alignment are beneficial for applications in ion conductivity and photonics. However, the structure of 3D-oriented MOF films and patterns can rapidly degrade under humid and acidic conditions. Thus, more durable 3D-ordered porous systems are desired for practical applications. Here, oriented porous polymer films and patterns are prepared by using heteroepitaxially oriented N 3 -functionalized MOF films as precursor materials. The film fabrication protocol utilizes an azide-alkyne cycloaddition on the Cu 2 (AzBPDC) 2 DABCO MOF. The micropatterning protocol exploits the X-ray sensitivity of azide groups in Cu 2 (AzBPDC) 2 DABCO, enabling selective degradation in the irradiated areas. The masked regions of the MOF film retain their N 3 -functionality, allowing for subsequent cross-linking through azide-alkyne coupling. Subsequent acidic treatment removes the Cu ions from the MOF, yielding porous polymer micro-patterns. The polymer has high chemical stability and shows an anisotropic fluorescent response. The use of 3D-oriented MOF systems as precursors for the fabrication of oriented porous polymers will facilitate the progress of optical components for photonic applications.
(© 2024 The Author(s). Advanced Materials published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
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