%0 Journal Article
%A Cao, Fengming
%A Strandskov Soerensen, Soeren
%A Christensen, Anders K. R.
%A Mollick, Samraj
%A Ge, Xuan
%A Sun, Daming
%A Nielsen, Anders B.
%A Nielsen, Niels Chr.
%A Lock, Nina
%A Lu, Ronghui
%A Klemmt, Rebekka
%A Kristensen, Peter K.
%A Jensen, Lars R.
%A Dallari, Francesco
%A Baglioni, Jacopo
%A Monaco, Giulio
%A Karlsen, Martin Aaskov
%A Baran, Volodymyr
%A Smedskjaer, Morten M.
%T Continuous structure modification of metal-organic framework glasses via halide salts
%J Nature Communications
%V 16
%N 1
%@ 2041-1723
%C [London]
%I Springer Nature
%M PUBDB-2025-03551
%P 7001
%D 2025
%X Melting and glass formation of metal-organic frameworks (MOFs) allow them to be processed into bulk materials. However, two major challenges remain: only a small fraction of MOF crystals undergo melting and glass-formation, and no well-established strategies exist for tuning MOF glass structures and properties. Here, we address both challenges through co-melting of zeolitic imidazole frameworks (ZIFs), a subset of MOFs, with heterocycle-based halide salts. The salt acts as a chemical “modifier”, akin to the role of alkali modifiers in traditional silicate glasses, e.g., allowing the melting of ZIF-8 that otherwise decomposes prior to melting. Through experimental and computational analyses, we show that the salts depolymerize the ZIFs, enabling continuous tuning of the fraction of bridging to non-bridging imidazolate linkers and, thereby, the thermal and mechanical properties. The proposed strategy enables diversification of MOF glass chemistry, tunable structures and properties, and ultimately an increased number of glass-forming MOFs with improved functionalities.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:40739141
%R 10.1038/s41467-025-62143-9
%U https://bib-pubdb1.desy.de/record/635796