{
  "abstract": "Molecular oxygen is universally regarded as an inhibitor of radical photopolymerization, necessitating rigorous deoxygenation and introducing obligatory induction periods. Here we report that a persistent photoinduced ground-state charge-transfer complex (PCTC), formed between a naphthalimide acceptor and a tertiary-amine donor, undergoes selective dissociation upon exposure to molecular oxygen. This oxygen-triggered activation releases a donor-derived radical cation while regenerating the acceptor, converting ambient O2 from an inhibitory species into a functional trigger for radical generation. The resulting photopolymerization proceeds without metal catalysts, or external initiators under open-air conditions. Because the tertiary-amine functionality is preserved at the polymer chain end, the system supports sequential photocontrolled chain extension, enabling the synthesis of block and graft copolymers. Extension to α-methylene amine-functionalized polymer backbones affords brush architectures that function as high-performance photocurable adhesives (lap-shear strength up to 20.38 MPa), exhibit robust electrical insulation, and permit rapid photo-patterning with micron resolution in open air. These findings establish an open-air photocuring platform that overturns the long-standing requirement for deoxygenation in industrial radical processing, offering a scalable, metal-free route to advanced polymer materials in ambient manufacturing environments.",
  "abstract_shown": true,
  "affiliations": [
    "Hefei National Research Center for Physical Sciences at the Microscale",
    "University of Science and Technology of China",
    "Hefei National Laboratory"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 11,
  "authors": [
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "Runyang Miao"
    },
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "Jing Chen"
    },
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "Aoyuan Cheng"
    },
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "Hongping Liu"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Baicheng Zhang"
    },
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "Taiyuan Li"
    },
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "Guangjian Cheng"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Wenhuan Huang"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Jun Jiang"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Yi Luo"
    },
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "Guoqing Zhang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2vtrc14v029tx.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15008322/v1",
  "fulltext_url": null,
  "id": "2vtrc14v029tx",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008322/v1",
  "language": null,
  "licence": "CC-BY-NC",
  "licence_label": "CC BY-NC",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by-nc/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "1605|Photopolymerization techniques and applications"
    ]
  ],
  "openalex": "W7208745320",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15008322/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-04",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/2vtrc14v029tx.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:17Z",
      "native_id": "10.26434/chemrxiv.15008322",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008322/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1605|Photopolymerization techniques and applications",
      "subfield": "organic"
    }
  ],
  "title": "Oxygen-Necessitated Dissociation of Photoinduced Ground-State Charge-Transfer Complexes for Open-Air Synthesis of Block and Graft Copolymers",
  "title_text": "Oxygen-Necessitated Dissociation of Photoinduced Ground-State Charge-Transfer Complexes for Open-Air Synthesis of Block and Graft Copolymers",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:17Z",
  "url": "https://research.draconitic.com/paper/2vtrc14v029tx",
  "venue": "ChemRxiv",
  "versions": []
}