{
  "abstract": "Phosphane oxides represent a cornerstone unit in modern optoelectronic materials due to their strong electron-withdrawing character, high thermal stability, and ability to tune excited-state properties. Herein, we report a streamlined design strategy toward donor-π-acceptor-π'-acceptor (Γ-type) systems incorporating dual phosphane oxide units as both intermediate and terminal acceptors. A series of diphosphane dioxides (1-3) was synthesized and characterized, revealing pronounced deep-blue fluorescence (λem = 385-418 nm in toluene, λem = 415-457 nm in solid) that stems from charge-transfer and locally excited states with high photoluminescence yields up to 95%. Structure-property relationships demonstrate that subtle variations in π-conjugation (π = phenyl, biphenyl) and donor strength govern optical bandgap, oscillator strength, excited-state dipole moments, and intersystem crossing pathways. Notably, 2 and 3 exhibit favorable thermal stability and high triplet energies, enabling their application as emitters in deep-blue OLEDs. Devices based on 2 exhibit a maximum external quantum efficiency (EQE) of 4.86%, delivering high blue color purity with CIE coordinates of (0.15, 0.07), while maintaining low turn-on voltages and minimal efficiency roll-off. Transient electroluminescence studies indicate a significant contribution from triplet-triplet annihilation, enhancing exciton utilization beyond the conventional singlet limit.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 11,
  "authors": [
    {
      "name": "Eetu Hakkarainen"
    },
    {
      "name": "Zongying Liu"
    },
    {
      "name": "Jhon Sebastian Oviedo Ortiz"
    },
    {
      "name": "Nicolas Vanthuyne"
    },
    {
      "name": "Jeanne Crassous"
    },
    {
      "name": "Ondřej Mrózek"
    },
    {
      "name": "Fabien Cougnon"
    },
    {
      "name": "Wen‐yi Hung"
    },
    {
      "name": "Pi‐tai Chou"
    },
    {
      "name": "Igor O. Koshevoy"
    },
    {
      "name": "Andrey Belyaev"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fr134zv72f37m.bib",
  "cited_by": 0,
  "doi": "10.1002/chem.71232",
  "fulltext_url": null,
  "id": "fr134zv72f37m",
  "issns": [
    "0947-6539",
    "1521-3765"
  ],
  "landing_url": "https://hal.science/hal-05676075v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.chim"
    ],
    [
      "hal",
      "1.chim.mate"
    ],
    [
      "hal",
      "1.chim.orga"
    ],
    [
      "hal",
      "1.chim.theo"
    ],
    [
      "openalex",
      "2208|Organic Light-Emitting Diodes Research"
    ]
  ],
  "openalex": "W7164171450",
  "pdf_url": "https://hal.science/hal-05676075/document",
  "pmcid": null,
  "pmid": "42267445",
  "published": "2026-10-14",
  "publisher": "Wiley-VCH Verlag",
  "ris": "https://research.draconitic.com/paper/fr134zv72f37m.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:57Z",
      "native_id": "hal-05676075",
      "source": "hal",
      "url": "https://hal.science/hal-05676075v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "hal:1.chim.mate",
      "subfield": "materials-polymers"
    },
    {
      "field": "chemistry",
      "origin": "hal:1.chim.orga",
      "subfield": "organic"
    },
    {
      "field": "chemistry",
      "origin": "hal:1.chim.theo",
      "subfield": "theoretical"
    }
  ],
  "title": "Asymmetric Diphosphane Dioxides With A–π–A–π’–D Scaffolds for High‐Purity Deep‐Blue Luminescence",
  "title_text": "Asymmetric Diphosphane Dioxides With A–π–A–π’–D Scaffolds for High‐Purity Deep‐Blue Luminescence",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:57Z",
  "url": "https://research.draconitic.com/paper/fr134zv72f37m",
  "venue": "Chemistry - A European Journal",
  "versions": []
}