{
  "abstract": "Modifying glass compositions is key to creating silicate-based glasses for technologies including optical fibres, catalytic supports, protective coatings and separation membranes. Here we extend this concept to metal–organic framework (MOF) glasses by modifying the MOF glass former ZIF-62 with Li(bim) and Na(bim) as compatible glass modifiers (benzimidazolate, bim − ). Melt-quenching of physical mixtures with increasing Na(bim) content yields modified MOF glasses that exhibit a systematic decrease in the glass transition temperature ( T g ), accompanied by increased liquid fragility, configurational heat capacity at T g and density: paralleling silicate glass chemistry through partial network depolymerization. Structural and spectroscopic analysis, coupled with density-functional theory calculations, confirm that Na(bim) is incorporated homogeneously into the MOF glass framework rather than the pores and reveal the presence of undercoordinated sodium ion environments. Finally, extraction of the modifier by water treatment increases glass porosity, akin to established borosilicate glass processes. This work introduces a transferable approach for tailoring the structure and properties of MOF glasses.",
  "abstract_shown": true,
  "affiliations": [
    "Fakultät für Chemie und Chemische Biologie , Technische Universität Dortmund , Dortmund , Germany",
    "School of Chemistry , University of Birmingham , Birmingham , UK",
    "Faculty of Mechanical Engineering ,",
    "Center for Interface-Dominated High Performance Materials (ZGH) , Ruhr-Universität Bochum , Bochum , Germany",
    "Department of Chemistry , SRM University-AP , Amaravati , India",
    "Yusuf Hamied Department of Chemistry , University of Cambridge , Cambridge , UK",
    "Department of Chemistry , TUM School of Natural Sciences , Technical University of Munich , Garching , Germany",
    "School of Metallurgy and Materials , University of Birmingham , Birmingham , UK"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 16,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Pascal Kolodzeiski",
      "orcid": "0000-0002-6801-3719"
    },
    {
      "affs": [
        1
      ],
      "name": "Benjamin M. Gallant",
      "orcid": "0000-0001-7413-291X"
    },
    {
      "affs": [
        0
      ],
      "name": "Lennard Richter"
    },
    {
      "name": "Mario Antonio T. Ongkiko",
      "orcid": "0009-0004-3594-9854"
    },
    {
      "affs": [
        2
      ],
      "name": "Carlo Franke",
      "orcid": "0000-0003-0932-846X"
    },
    {
      "affs": [
        3
      ],
      "name": "Aleksander Kostka",
      "orcid": "0000-0002-8306-4709"
    },
    {
      "affs": [
        0
      ],
      "name": "Wen‐Long Xue",
      "orcid": "0000-0003-0778-2300"
    },
    {
      "affs": [
        4,
        0
      ],
      "name": "Chinmoy Das"
    },
    {
      "name": "Jan-Benedikt Weiss"
    },
    {
      "name": "Elena Kolodzeiski",
      "orcid": "0000-0002-9698-3886"
    },
    {
      "affs": [
        5
      ],
      "name": "Thomas Kress"
    },
    {
      "affs": [
        6
      ],
      "name": "Gregor Kieslich",
      "orcid": "0000-0003-2038-186X"
    },
    {
      "affs": [
        2
      ],
      "name": "Tong Li"
    },
    {
      "affs": [
        7
      ],
      "name": "Andrew J. Morris",
      "orcid": "0000-0001-7453-5698"
    },
    {
      "affs": [
        1
      ],
      "name": "Dominik J. Kubicki",
      "orcid": "0000-0002-9231-6779"
    },
    {
      "affs": [
        0
      ],
      "name": "Sebastian Henke",
      "orcid": "0000-0003-1502-6038"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bffewbp762j5r.bib",
  "cited_by": 12,
  "doi": "10.1038/s41557-026-02115-8",
  "fulltext_url": null,
  "id": "bffewbp762j5r",
  "issns": [],
  "landing_url": "https://lirias.kuleuven.be/handle/20.500.12942/793586",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2503|Glass properties and applications"
    ]
  ],
  "openalex": "W7160103273",
  "pdf_url": "https://lirias.kuleuven.be/retrieve/f3576e2c-7b43-44cd-a661-ce6e0e3f8ab0",
  "pmcid": null,
  "pmid": null,
  "published": "2026-08-01",
  "publisher": "KU Leuven",
  "ris": "https://research.draconitic.com/paper/bffewbp762j5r.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T13:27:00Z",
      "native_id": "W7160103273",
      "source": "openalex",
      "url": "https://lirias.kuleuven.be/handle/20.500.12942/793586"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2503|Glass properties and applications",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Alkali-ion-modified zeolitic imidazolate framework glasses",
  "title_text": "Alkali-ion-modified zeolitic imidazolate framework glasses",
  "type": "peer-reviewed",
  "updated_at": "2026-11-04T13:21:19Z",
  "url": "https://research.draconitic.com/paper/bffewbp762j5r",
  "venue": "Lirias (KU Leuven)",
  "versions": []
}