{
  "abstract": "Anion exchange doping (AED) is a key strategy for optimizing organic thermoelectrics (OTEs).However, the influence of specific polymer microstructures like polymorphs on AED has received relatively little attention.Here, we investigate the interplay between thermally induced polymorphism in poly(dodecyl-quaterthiophene) (PQT) and sequential AED efficiency using FeCl3 and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI).By precisely fabricating microstructural gradients via a custom thermal annealing stage, we rapidly screen AED behavior across a spectrum of structural states within a single PQT film.We reveal that pre-set polymorphism acts as a fundamental gating mechanism for dopant infiltration.The expanded lamellar spacing of the (100) polymorph, formed after annealing at elevated temperatures, allows for greater dopant uptake, and thus enables electronic conductivity () as high as 522.0 ± 23.0 S/cm and a maximum power factor of 15.4 μW/mK 2 .Conversely, the tighter (100)' polymorph restricts doping level and structural ordering.This work establishes that pre-forming the (100) polymorph is a critical prerequisite for maximizing charge transport and thermoelectric performance in sequentially doped PQT.",
  "abstract_shown": true,
  "affiliations": [
    "Pritzker School of Molecular Engineering",
    "University of Chicago",
    "Department of Chemistry"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "name": "Jie-Hao Chen"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Naisong Shan"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Yunhao Zhao"
    },
    {
      "affs": [
        2,
        1
      ],
      "name": "Alexander Filatov"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Sihong Wang"
    },
    {
      "name": "Shrayesh Patel",
      "orcid": "0000-0003-3657-827X"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/93w70vr8ycp0s.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15009871/v1",
  "fulltext_url": null,
  "id": "93w70vr8ycp0s",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009871/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",
      "2505|Advanced Thermoelectric Materials and Devices"
    ]
  ],
  "openalex": "W7220445251",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15009871/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-05",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/93w70vr8ycp0s.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:22Z",
      "native_id": "10.26434/chemrxiv.15009871",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009871/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|Advanced Thermoelectric Materials and Devices",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Polymorph Influence on Sequential Anion Exchange Doping and Charge Transport in Poly(didodecyl-quaterthiophene) (PQT) for Organic Thermoelectrics",
  "title_text": "Polymorph Influence on Sequential Anion Exchange Doping and Charge Transport in Poly(didodecyl-quaterthiophene) (PQT) for Organic Thermoelectrics",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:22Z",
  "url": "https://research.draconitic.com/paper/93w70vr8ycp0s",
  "venue": "ChemRxiv",
  "versions": []
}