{
  "abstract": "Radically activated dynamic covalent bonds can enable reprocessable, thus more sustainable, polymeric materials, but conventional characterization approaches limit understanding of atomic-scale rearrangements. Specifically, the addition-fragmentation-transfer (AFT) pathway has been characterized by bulk-scale changes in mechanical properties; attempts to probe the exchange on a atomic scale are limited. Traditional spectroscopic methods cannot detect AFT because the overall bonding environment is unchanged before and after exchange with a very short-lived intermediate. To this end, this study uses fluorescence lifetime imaging microscopy (FLIM) to probe local AFT bond exchange via nondestructive characterization. Herein, allyl sulfide AFT in acrylate polymer thin films is monitored by FLIM over time, leveraging the sensitivity of fluorescence lifetime to nearby bond rearrangement through a series of control systems. Notably, FLIM reveals a continuing AFT cascade beyond the typical time scale when mechanical property change saturates. We anticipate applying these findings to other hard-to-access phenomena, as well as a mechanistic understanding of the environmental dependence of fluorescence lifetime.",
  "abstract_shown": true,
  "affiliations": [
    "University of Massachusetts Amherst, Department of Polymer Science and Engineering, 120 Governors Drive, Amherst, Massachusetts 01003, United States.",
    "Nanoscience and Nanotechnology (International Program/Interdisciplinary), Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "M K Jutze",
      "orcid": "0000-0001-7131-374X"
    },
    {
      "affs": [
        0
      ],
      "name": "Ellie Haljun",
      "orcid": "0009-0005-4656-4092"
    },
    {
      "affs": [
        0
      ],
      "name": "Mao Komura"
    },
    {
      "affs": [
        1
      ],
      "name": "Nanthicha Thajai"
    },
    {
      "affs": [
        0
      ],
      "name": "Reika Katsumata",
      "orcid": "0000-0003-3119-9385"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/c4xnsc6kw5fag.bib",
  "cited_by": 0,
  "doi": "10.1021/acsnanoscienceau.6c00066",
  "fulltext_url": "https://europepmc.org/articles/PMC13693185",
  "id": "c4xnsc6kw5fag",
  "issns": [
    "2694-2496"
  ],
  "landing_url": "https://europepmc.org/article/MED/42921425",
  "language": "eng",
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2507|Polymer composites and self-healing"
    ]
  ],
  "openalex": "W7204869517",
  "pdf_url": "https://europepmc.org/articles/PMC13693185?pdf=render",
  "pmcid": "PMC13693185",
  "pmid": "42921425",
  "published": "2026-08-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/c4xnsc6kw5fag.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:21:02Z",
      "native_id": "MED:42921425",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42921425"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2507|Polymer composites and self-healing",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Addition-Fragmentation-Transfer Monitored by Fluorescence Lifetime Imaging Microscopy.",
  "title_text": "Addition-Fragmentation-Transfer Monitored by Fluorescence Lifetime Imaging Microscopy.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:21:02Z",
  "url": "https://research.draconitic.com/paper/c4xnsc6kw5fag",
  "venue": "ACS nanoscience Au",
  "versions": []
}