{
  "abstract": "Thermochromic fluorescent materials have significant application prospects in the field of temperature sensing. In this study, based on the donor–acceptor–donor (D-A-D) strategy, two fluorescent molecules, MPT-1 and MPT-2, with fluorenyl cores and methoxy phenothiazine as donors, were synthesized via the Buchwald–Hartwig C–N cross-coupling reaction, and their structures were confirmed by 1H NMR, 13C NMR and HRMS. Thermogravimetric analysis indicated that both compounds exhibited excellent thermal stability (Td = 377 °C, 413 °C). Aggregation-induced emission (AIE) experiments showed that the emission peak blue-shifted by approximately 42–44 nm with increasing aggregation. Temperature-dependent fluorescence studies indicated that from 80 K to 300 K, the emission peaks of both molecules shifted continuously from the yellow region to the blue region. The relative sensitivities of MPT-1 and MPT-2 were 2.5% K−1 and 2.19% K−1, respectively, with CIE ΔE shifts of 0.19 and 0.18. This study elucidates the thermochromic mechanism of D-A-D-type fluorescent molecules, confirms the tunability of their emission colour in response to temperature, and provides theoretical guidance and experimental reference for the design of novel thermochromic fluorescent materials and their applications in temperature sensing.",
  "abstract_shown": true,
  "affiliations": [
    "College of Information Technology, Jilin Engineering Research Center of Optoelectronic Materials and Devices, Jilin Normal University, Siping 136000, China",
    "Jilin Provincial Key Laboratory of Wide Bandgap Semiconductor Material Growth and Device Applications, Jilin Normal University, Changchun 130103, China",
    "State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Zheng-Kun Qin"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Chi Feng"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Meiqi Tang"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Yanfei Li"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Qingao Zhang"
    },
    {
      "affs": [
        2
      ],
      "name": "Ruipeng Deng"
    },
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "Ming-Xing Song",
      "orcid": "0000-0003-4309-5102"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/56nb83xma6t4d.bib",
  "cited_by": 0,
  "doi": "10.3390/molecules31193504",
  "fulltext_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13666673/?tool=EBI",
  "id": "56nb83xma6t4d",
  "issns": [
    "1420-3049"
  ],
  "landing_url": "https://europepmc.org/article/PMC/PMC13666673",
  "language": "eng",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2505|Luminescence and Fluorescent Materials"
    ]
  ],
  "openalex": "W7215088813",
  "pdf_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13666673/pdf/?tool=EBI",
  "pmcid": "PMC13666673",
  "pmid": null,
  "published": "2026-10-01",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/56nb83xma6t4d.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:31Z",
      "native_id": "PMC:PMC13666673",
      "source": "europepmc",
      "url": "https://europepmc.org/article/PMC/PMC13666673"
    },
    {
      "first_seen": "2026-10-30T12:18:42Z",
      "native_id": "10.3390/molecules31193504",
      "source": "crossref",
      "url": "https://www.mdpi.com/1420-3049/31/19/3504"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|Luminescence and Fluorescent Materials",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Wide-Color-Span: Blue-Shifted Thermochromic D-A-D Fluorophores for Ratiometric Temperature Sensing",
  "title_text": "Wide-Color-Span: Blue-Shifted Thermochromic D-A-D Fluorophores for Ratiometric Temperature Sensing",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:42Z",
  "url": "https://research.draconitic.com/paper/56nb83xma6t4d",
  "venue": "Molecules (Basel, Switzerland)",
  "versions": []
}