{
  "abstract": "The rapid advancement of small-molecule-based fluorophores is attributed to their highly tunable optical properties, which enable notable applications in biomedical, environmental research and demand cost-effective, user-friendly alternatives for deployment in remote locations. Accordingly, we have synthesised and characterised a new class of simple tetracyanoquinodimethane (TCNQ) derivatives with different amine substituents referred to as diaminodicyanoquinodimethane fluorophores (DADQs), i.e. BMOPDQ [1], BCDMDQ [2], BEPDQ [3], BMPPDQ [4], and BCPPDQ [5]. At the outset, herein we introduce and demonstrate a novel approach that utilises a sequential sensitised emission process, in which the first step involves DADQ-assisted chemiluminescence (CL) wavelength shift, followed by optical sensitisation of gold nanoparticles (AuNPs), in a point-of-source testing (PoST) multimode optical detection system. The photons emitted from the luminol-based chemiexcited species are transferred to DADQs via an optical absorption. The resulting green emission from DADQs ascertains the sensitised emission of AuNPs, which emit a red signal. Moreover, the blue emission of the chemiluminiscent signal can be shifted to longer wavelengths without any complex instrumental setup, making it suitable for real-world applications. Thus, the PoST platform provides a compact, sensitive, and selective method for detecting various analytes, including biomarkers and metal ions, using small sample volumes without the requirement of bulky instrumentation. Furthermore, a PoST-reliable device could enable luminescence techniques to reach remote areas for portable on-site testing.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Chemistry, Birla Institute of Technology and Science, Pilani-Hyderabad Campus Jawahar Nagar, Kapra Mandal, Medchal Malkajgiri District Hyderabad 500078 Telangana India jslakshmi@hyderabad.bits-pilani.ac.in.",
    "MEMS, Microfluidics and Nanoelectronics Laboratory, Department of Electrical and Electronics Engineering, Birla Institute of Technology and Science Pilani Hyderabad 500078 Telangana India.",
    "Department of Chemistry, Indian Institute of Technology Kharagpur 721302 India."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Anuradha Sureshrao Mohitkar"
    },
    {
      "affs": [
        1
      ],
      "name": "Pavar Sai Kumar"
    },
    {
      "affs": [
        2
      ],
      "name": "Rituparna Sinha"
    },
    {
      "affs": [
        2
      ],
      "name": "Sabyashachi Mishra",
      "orcid": "0000-0002-2551-1021"
    },
    {
      "affs": [
        1
      ],
      "name": "Sanket Goel",
      "orcid": "0000-0002-9739-4178"
    },
    {
      "affs": [
        0
      ],
      "name": "Subbalakshmi Jayanty",
      "orcid": "0000-0003-0350-694X"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bcwqywrf2hhxc.bib",
  "cited_by": 0,
  "doi": "10.1039/d6ra08375g",
  "fulltext_url": "https://europepmc.org/articles/PMC13681258",
  "id": "bcwqywrf2hhxc",
  "issns": [
    "2046-2069"
  ],
  "landing_url": "https://europepmc.org/article/MED/42903338",
  "language": "eng",
  "licence": "CC-BY-NC",
  "licence_label": "CC BY-NC",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Chemistry"
    ],
    [
      "openalex",
      "2204|Biosensors and Analytical Detection"
    ]
  ],
  "openalex": "W7222997844",
  "pdf_url": "https://europepmc.org/articles/PMC13681258?pdf=render",
  "pmcid": "PMC13681258",
  "pmid": "42903338",
  "published": "2026-10-20",
  "publisher": "Royal Society of Chemistry",
  "ris": "https://research.draconitic.com/paper/bcwqywrf2hhxc.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:53Z",
      "native_id": "MED:42903338",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42903338"
    },
    {
      "first_seen": "2026-11-07T12:23:35Z",
      "native_id": "PMC13681258",
      "source": "pmc",
      "url": "https://doi.org/10.1039/d6ra08375g"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "heading:Chemistry",
      "subfield": "general"
    }
  ],
  "title": "Onsite DADQs-assisted chemiluminescence wavelength shift from luminol µPADs to tetracyanoquinodimethane-based fluorophores enabling sensitised emission of AuNPs in point-of-source testing (PoST) multimode device.",
  "title_text": "Onsite DADQs-assisted chemiluminescence wavelength shift from luminol µPADs to tetracyanoquinodimethane-based fluorophores enabling sensitised emission of AuNPs in point-of-source testing (PoST) multimode device.",
  "type": "peer-reviewed",
  "updated_at": "2026-11-08T12:21:04Z",
  "url": "https://research.draconitic.com/paper/bcwqywrf2hhxc",
  "venue": "RSC advances",
  "versions": []
}