{
  "abstract": "BN-isosteric acenes offer new opportunities for structural and property modulation, but the synthesis and conformational control of highly fused BN acenes remain challenging. Here we develop a photochemical strategy to convert BN heterocyclic precursors into highly fused BN acenes. By varying substituent positions and ring-fusion orientations, we achieve a conformational evolution from planar to double-helical structures. Despite pronounced backbone distortion, the six-membered BN rings retain substantial local aromaticity. Conformational modulation gives rise to diverse photophysical properties, including long-lived phosphorescence and persistent afterglow. Enhanced air stability arises from the synergistic effects of steric shielding of the boron centres by the double-helical architecture and HOMO energy lowering upon π-extension. This work establishes a new route to highly fused BN acenes and provides opportunities for tuning their three-dimensional structures and properties.",
  "abstract_shown": true,
  "affiliations": [
    "College of Chemistry and Materials",
    "Henan Agricultural University",
    "College of Agriculture",
    "School of Chemistry",
    "Xiangtan University",
    "LPCNO",
    "Université de Toulouse"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 16,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Lijie Liu",
      "orcid": "0000-0003-0814-6963"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Xingxiao Wang"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Wanjin Wu"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Jinjin Wang"
    },
    {
      "affs": [
        2,
        1
      ],
      "name": "Yu Zhang"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Lu Lin"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Yan Tang"
    },
    {
      "affs": [
        3,
        4
      ],
      "name": "Tianjing Wu"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Xin Zheng"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Guoxing Liu"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Yanyan Liu"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Yutao Dong"
    },
    {
      "affs": [
        2,
        1
      ],
      "name": "Zheng Zhao"
    },
    {
      "affs": [
        5,
        6
      ],
      "name": "Iker Del Rosal"
    },
    {
      "affs": [
        0,
        1,
        2,
        5,
        6
      ],
      "name": "Laurent Maron"
    },
    {
      "affs": [
        2,
        1
      ],
      "name": "Ben Zhong Tang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/epx87rpfavy9v.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15011043/v1",
  "fulltext_url": null,
  "id": "epx87rpfavy9v",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15011043/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",
      "1605|Synthesis and Properties of Aromatic Compounds"
    ]
  ],
  "openalex": "W7223704915",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15011043/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-26",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/epx87rpfavy9v.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:26Z",
      "native_id": "10.26434/chemrxiv.15011043",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15011043/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1605|Synthesis and Properties of Aromatic Compounds",
      "subfield": "organic"
    }
  ],
  "title": "Photochemical Synthesis of Planar-to-Helical BN Acenes",
  "title_text": "Photochemical Synthesis of Planar-to-Helical BN Acenes",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:26Z",
  "url": "https://research.draconitic.com/paper/epx87rpfavy9v",
  "venue": "ChemRxiv",
  "versions": []
}