{
  "abstract": "Polyaramids such as Kevlar ® are renowned for their high mechanical strength and chemical resistance; however, their non-conjugated backbones render them electrically insulating. Orbital alignment can allow close-packed stacked molecules to exhibit long range conduction, opening the possibility that insulating nanomaterials may form conducting arrangements. Herein, we report two-dimensional (2D) polyaramids with tailored end-groups that promote tighter molecular packing as their size decreases. Terminal groups with the size of a single methyl result in aligned films that exhibit highly anisotropic electrical conductivity up to 1.39 × 10 –4 S m –1 , comparable to or exceeding many undoped conjugated polymers. Charge transport occurs orthogonally across aligned, stacked polymer platelets while the in-plane direction remains insulating. The anisotropy reverses the behavior typically observed in-plane conduction of stacked 2D nanomaterials. The resulting films are photoconductive under 405 nm illumination with an external quantum efficiency of 0.62%. The mechanical and chemical stability of such conductive 2D polyaramids enables the first single-component, acid-stable polymer electrodes based on non-conjugated frameworks, capable of operating in harsh environments while exhibiting perfectly invariant cyclic capacitance for over 10,000 cycles at pH 2. The stability is enabled in part by the impermeability of such films to moisture and oxygen, underscored by their ability to suppress perovskite degradation with a 150 nm coating. Together, these findings underscore a newly realized mode of electrical conduction in close-packed 2D polymers, enabling ultra-lightweight and chemically stable electrodes for energy storage and sustainability applications.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Chemical Engineering",
    "Massachusetts Institute of Technology",
    "Department of Integrated Display Engineering",
    "Yonsei University",
    "School of Electrical and Electronic Engineering",
    "Department of Materials Science and Engineering",
    "Characterization.nano",
    "Department of Chemical and Biological Engineering",
    "University of Colorado Boulder",
    "Department of Chemistry"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 14,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Zitang Wei",
      "orcid": "0000-0002-7391-0342"
    },
    {
      "affs": [
        0,
        1,
        2,
        3,
        4
      ],
      "name": "Byung Ha Kang",
      "orcid": "0000-0002-6506-5118"
    },
    {
      "affs": [
        0,
        1,
        5
      ],
      "name": "Changhwan Oh",
      "orcid": "0000-0003-2120-6676"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Amanda Cheng"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Yile Jiang",
      "orcid": "0009-0001-6718-0144"
    },
    {
      "affs": [
        6,
        1
      ],
      "name": "Yong Zhang"
    },
    {
      "affs": [
        0,
        1,
        7,
        8
      ],
      "name": "Cody L. Ritt",
      "orcid": "0000-0002-3215-1685"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Shahab Amirabadi",
      "orcid": "0009-0000-6087-5667"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Xiaoyi Wang",
      "orcid": "0000-0002-8346-0808"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Sungyun Yang",
      "orcid": "0000-0002-3728-9544"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Sanjay S. Garimella",
      "orcid": "0009-0000-0430-5205"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Hohyung Kang",
      "orcid": "0000-0001-5373-4460"
    },
    {
      "affs": [
        0,
        1,
        9
      ],
      "name": "Heather J. Kulik",
      "orcid": "0000-0001-9342-0191"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Michael S. Strano",
      "orcid": "0000-0003-2944-808X"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ce9me9t5xykth.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15011010/v1",
  "fulltext_url": null,
  "id": "ce9me9t5xykth",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15011010/v1",
  "language": null,
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2507|Conducting polymers and applications"
    ]
  ],
  "openalex": "W7223697089",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-25",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/ce9me9t5xykth.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:26Z",
      "native_id": "10.26434/chemrxiv.15011010",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15011010/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2507|Conducting polymers and applications",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Anisotropic Electrical Conductivity in Close-Packed Two-Dimensional Polyaramids",
  "title_text": "Anisotropic Electrical Conductivity in Close-Packed Two-Dimensional Polyaramids",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:26Z",
  "url": "https://research.draconitic.com/paper/ce9me9t5xykth",
  "venue": "ChemRxiv",
  "versions": []
}