{
  "abstract": "Chiral small molecules can induce chiroptical responses in otherwise achiral fluorescent polymers, making these materials relevant to circularly polarized lightemitting materials and devices. Sequential deposition offers a route to chiroptical polymer films when a fluorescent polymer and a chiral small molecule cannot be readily co-processed from the same solvent. Here, poly(9,9-dioctylfluorene-altbithiophene) (F8T2) and a chiral inducer are deposited as initially separate layers from orthogonal solvents. A chiroptical response develops after thermal annealing, after which the excess inducer is reduced by selective ethanol treatment. With R-DbHP, the apparent peak absorption dissymmetry factor (|gabs|) increases from 0.09 for an optimized blend film to 0.35 for the sequentially processed film. With R-5011, the apparent film value reaches 1.06, and CP-LEDs show |gEL| up to 1.02. Across two independently fabricated devices per condition, the external quantum efficiency was 0.16–0.17% without EtOH treatment and 0.20–0.27% with treatment, and the corresponding turn-on voltages were 9V and 7V; the peak gEL remains similar, whereas the maximum luminance is lower in the treated devices. These device comparisons are exploratory and no statistical inference is made. The CD-derived values are also treated as apparent because complete polarization-artifact controls and independent validation of the largest raw ellipticities were not available. Within these limitations, the results identify sequential chiral-layer processing as a potential alternative to bulk co-doping in polymer CP-LEDs.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Physics",
    "National Taiwan Normal University"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 1,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Hsin-Tso Chen",
      "orcid": "0009-0008-1641-196X"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1vvb6d8kqq1ey.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15008146/v1",
  "fulltext_url": null,
  "id": "1vvb6d8kqq1ey",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008146/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",
      "2208|Organic Light-Emitting Diodes Research"
    ]
  ],
  "openalex": "W7204966969",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15008146/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-01",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/1vvb6d8kqq1ey.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:17Z",
      "native_id": "10.26434/chemrxiv.15008146",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008146/v2"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "source:chemrxiv",
      "subfield": "general"
    }
  ],
  "title": "Sequential Chiral-Layer Processing for Large Chiroptical Responses in Polymer Films and CP-LEDs",
  "title_text": "Sequential Chiral-Layer Processing for Large Chiroptical Responses in Polymer Films and CP-LEDs",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:21Z",
  "url": "https://research.draconitic.com/paper/1vvb6d8kqq1ey",
  "venue": "ChemRxiv",
  "versions": []
}