{
  "abstract": "We report the synthesis and characterization of a series of nonalternant acenaphtho[1,2-k]fluoranthene diimide derivatives (L1–L4) featuring different aryl substituents and for the first time examine their reverse saturable absorption (RSA) properties and optical-limiting (OL) application potentials. The combined benefits of a large nonalternant π-framework and unique donor–acceptor type conformation make it possible to improve their chemical stability and intramolecular charge-transfer interaction, offering excellent feasibility of finely regulating their OL behavior based on the RSA mechanism. Z-scan experiments uncover that all compounds exhibit outstanding OL performance, far superior to most reported classical OL materials (e.g., C60). By applying 532 nm nanosecond laser pulses, the thiophene-bearing L1 achieves the lowest OL onset threshold of 7 mJ cm−2, the lowest OL threshold of 0.123 J cm−2, and the largest nonlinear absorption coefficient of 941 cm GW−1, all of which significantly outweigh those of benchmark C60. The RSA mechanism of L1–L4 is well identified by time-resolved transient absorption spectroscopy. The stronger excited-state absorption and longer excited-state lifetimes of L1, L2, and L4 contribute to higher OL performance compared to L3. Our findings demonstrate the effectiveness of imide-functionalized nonalternant polycyclic aromatic hydrocarbons towards constructing high-performance OL materials.",
  "abstract_shown": true,
  "affiliations": [
    "Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University Xiangtan 411105 P. R. China",
    "Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China",
    "Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 P. R. China"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 10,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Jiaxin Lan"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Zhipeng Ma"
    },
    {
      "affs": [
        0
      ],
      "name": "Wentao Liu"
    },
    {
      "affs": [
        0
      ],
      "name": "Shuhao Zeng"
    },
    {
      "affs": [
        0
      ],
      "name": "Guangxiong Bin"
    },
    {
      "affs": [
        2
      ],
      "name": "Longbin Ren"
    },
    {
      "affs": [
        0
      ],
      "name": "Liping Zheng"
    },
    {
      "affs": [
        1
      ],
      "name": "Chenghua Sun",
      "orcid": "0000-0002-6325-8178"
    },
    {
      "affs": [
        1
      ],
      "name": "Jibin Sun",
      "orcid": "0000-0003-0689-0844"
    },
    {
      "affs": [
        0
      ],
      "name": "Huajie Chen",
      "orcid": "0000-0003-0366-8826"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/dz0z1zserzmyh.bib",
  "cited_by": 0,
  "doi": "10.1039/d6sc05845k",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13592094/",
  "id": "dz0z1zserzmyh",
  "issns": [
    "2041-6520",
    "2041-6539"
  ],
  "landing_url": "https://doi.org/10.1039/d6sc05845k",
  "language": "en",
  "licence": "CC-BY-3.0",
  "licence_label": "CC BY 3.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/3.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Chemistry"
    ],
    [
      "openalex",
      "2504|Nonlinear Optical Materials Studies"
    ]
  ],
  "openalex": "W7213415470",
  "pdf_url": "https://pubs.rsc.org/sc/article-pdf/doi/10.1039/D6SC05845K/14720640/d6sc05845k.pdf",
  "pmcid": "PMC13592094",
  "pmid": "42769987",
  "published": "2026-09-17",
  "publisher": "Royal Society of Chemistry",
  "ris": "https://research.draconitic.com/paper/dz0z1zserzmyh.ris",
  "sources": [
    {
      "first_seen": "2026-11-07T12:23:30Z",
      "native_id": "PMC13592094",
      "source": "pmc",
      "url": "https://doi.org/10.1039/d6sc05845k"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2504|Nonlinear Optical Materials Studies",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Nonalternant acenaphtho[1,2-k]fluoranthene diimide derivatives with outstanding optical-limiting performance",
  "title_text": "Nonalternant acenaphtho[1,2-k]fluoranthene diimide derivatives with outstanding optical-limiting performance",
  "type": "peer-reviewed",
  "updated_at": "2026-11-08T12:20:59Z",
  "url": "https://research.draconitic.com/paper/dz0z1zserzmyh",
  "venue": "Chemical Science",
  "versions": []
}