{
  "abstract": "The chirality-induced spin selectivity (CISS) effect has attracted increasing attention for its unique ability to generate spin-polarized currents without magnetic components, with promising applications in spintronics, optoelectronics, and electrocatalysis. Although a wide range of chiral materials have been demonstrated to exhibit the CISS effect, most reported systems are based on amorphous films, self-assembled monolayers, or supramolecular assemblies, where structural disorder and aggregative traps compromise reliable evaluation of the CISS effect and obscure the structure-property relationship. Here, we overcome these limitations by constructing high-quality single crystals of chiral BN-embedded double helicenes, which feature a rigid chiral backbone and ordered molecular packing. Using magnetic conductive atomic force microscopy, we show that the single-crystal platform yields significantly improved current uniformity and measurement reproducibility compared with spin-coated thin films. Taking advantage of this enhanced reliability, we systematically investigated spin-selective transport in single crystals with thicknesses ranging from 18 to 330 nm. The spin polarization initially increases rapidly with crystal thickness, reaches a broad maximum, and remains pronounced over transport distances of up to 330 nm. This thickness-dependent behavior provides direct evidence for the cumulative spinselective transport along the long-range ordered structure, thereby distinguishing intrinsic bulk spin polarization from interfacial contributions. Our results thus establish chiral organic single crystals as a robust platform for investigating the CISS effect and unveiling clear structureproperty correlations.",
  "abstract_shown": true,
  "affiliations": [
    "State Key Laboratory of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, Haihe Laboratory of Sustainable Chemical Transformations",
    "Academy for Advanced Interdisciplinary Studies, College of Chemistry, Nankai University",
    "State Key Laboratory of Advanced Materials for Intelligent Sensing, Key Laboratory of Organic Integrated Circuit, Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Institute of Molecular Aggregation Science",
    "Tianjin University",
    "School of Materials Science and Engineering",
    "National Institute for Advanced Materials, Nankai University"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Wanhui Li"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Shaolin Du"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Shiyue Sun"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Ji-Kun Li"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Hao-Han Lv"
    },
    {
      "affs": [
        4,
        5
      ],
      "name": "Guankui Long"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Shuaishuai Ding"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Xiao-Ye Wang",
      "orcid": "0000-0003-3540-0277"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/227byj6r4h1nn.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15010746/v1",
  "fulltext_url": null,
  "id": "227byj6r4h1nn",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010746/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",
      "2208|Molecular Junctions and Nanostructures"
    ]
  ],
  "openalex": "W7223122924",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15010746/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/227byj6r4h1nn.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:24Z",
      "native_id": "10.26434/chemrxiv.15010746",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010746/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "source:chemrxiv",
      "subfield": "general"
    }
  ],
  "title": "Chiral Organic Single Crystals as a Platform for Chirality-Induced Spin Selectivity",
  "title_text": "Chiral Organic Single Crystals as a Platform for Chirality-Induced Spin Selectivity",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:24Z",
  "url": "https://research.draconitic.com/paper/227byj6r4h1nn",
  "venue": "ChemRxiv",
  "versions": []
}