{
  "abstract": "Despite growing interest in metal-organic frameworks (MOFs for protonconductivity applications, monovalent-cation-based MOFs remain comparatively underexplored due to the weaker coordination interactions typically associated with these systems. In this work, we report GR-MOF-28, a novel potassium-based naphthalene tetracarboxylate framework synthesized under mild aqueous conditions at room temperature. Structurally, GR-MOF-28 consists of K2O10 dioctahedra interconnected through tetracarboxylate ligands and coordinated water molecules, generating a confined hydrogen-bond network along the crystallographic channels. The material exhibits proton conductivity values up to 4.3·10-2 S·cm-1 under high relative humidity conditions, placing it among the highest-performing K-based MOFs reported to date. Combined electrochemical impedance spectroscopy and molecular simulations support a water-mediated Grotthusstype proton transport mechanism through the confined hydrogen-bond network. In addition, GR-MOF-28 can be incorporated into a conductive polymer matrix without loss of proton transport properties. These results highlight the potential of underexplored K-based coordination frameworks as proton-conducting materials.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Inorganic Chemistry, Faculty of Science, University of Granada, Av. Fuentenueva s/n, Granada, Spain, 18071",
    "Advanced Porous Materials Unit, IMDEA Energy Institute, Avda. Ramón de la Sagra 3, Móstoles, Madrid, Spain, 28935",
    "IAAB, Universidad Carlos III de Madrid, Avda. Universidad 30, Madrid, Spain, E-28911",
    "ICGM",
    "ENSCM"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 13,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Pablo Salcedo-Abraira",
      "orcid": "0000-0003-4812-8938"
    },
    {
      "affs": [
        0
      ],
      "name": "José M. Zubeldia-Gutiérrez"
    },
    {
      "affs": [
        1
      ],
      "name": "Catalina Biglione"
    },
    {
      "affs": [
        0
      ],
      "name": "Amalia GarcíaGarcía"
    },
    {
      "affs": [
        0
      ],
      "name": "Clara Garrido"
    },
    {
      "affs": [
        2
      ],
      "name": "Sydonne Swaby"
    },
    {
      "affs": [
        3,
        4
      ],
      "name": "Fabrice Salles"
    },
    {
      "affs": [
        2
      ],
      "name": "María Teresa Pérez-Prior"
    },
    {
      "affs": [
        2
      ],
      "name": "Belén Levenfeld"
    },
    {
      "affs": [
        2
      ],
      "name": "Alejandro Várez"
    },
    {
      "affs": [
        0
      ],
      "name": "Antonio Rodríguez-Diéguez"
    },
    {
      "affs": [
        1
      ],
      "name": "Patricia Horcajada"
    },
    {
      "affs": [
        0
      ],
      "name": "Sara Rojas"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2vnqf8594p00t.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15008452/v1",
  "fulltext_url": null,
  "id": "2vnqf8594p00t",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008452/v1",
  "language": null,
  "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",
      "1604|Metal-Organic Frameworks: Synthesis and Applications"
    ]
  ],
  "openalex": "W7211957930",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15008452/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-07",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/2vnqf8594p00t.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:17Z",
      "native_id": "10.26434/chemrxiv.15008452",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008452/v2"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1604|Metal-Organic Frameworks: Synthesis and Applications",
      "subfield": "inorganic"
    }
  ],
  "title": "Novel green K-based Metal-Organic Framework with high proton conductivity",
  "title_text": "Novel green K-based Metal-Organic Framework with high proton conductivity",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:19Z",
  "url": "https://research.draconitic.com/paper/2vnqf8594p00t",
  "venue": "ChemRxiv",
  "versions": []
}