{
  "abstract": "An electrochemical sensor based on a novel composite of electrochemically reduced graphene oxide, polypyrrole-coated magnetic nanoparticles (MNPs@PPy), and Nafion was developed for dopamine (DA) detection. The structural, thermal, and electrochemical properties of the composite were validated through a combination of advanced spectroscopic techniques, thermal profiling, electron microscopy, and impedance analyses. Under optimized conditions, differential pulse voltammetry (DPV) revealed a high sensitivity (1.573 A·M−1·cm−2, R2 = 0.9874) and a limit of detection (LOD) of 5.4 × 10−9 M for DA. The sensor displayed excellent selectivity, showing minimal interference from ascorbic acid, uric acid, and acetaminophen. Repeatability and reproducibility were confirmed (coefficient of variation ~8%). Real-sample analysis of urine and blood demonstrated recovery rates between 75 and 116%.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "name": "Afef Dhaffouli"
    },
    {
      "name": "Paul Soto-Rodríguez"
    },
    {
      "name": "Soledad Carinelli"
    },
    {
      "name": "Houcine Barhoumi"
    },
    {
      "name": "José Luis González-Mora"
    },
    {
      "name": "Pedro Salazar-Carballo"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e815n4a2dvmem.bib",
  "cited_by": 0,
  "doi": "10.3390/mi17080908",
  "fulltext_url": null,
  "id": "e815n4a2dvmem",
  "issns": [
    "2072-666X"
  ],
  "landing_url": "https://hal.science/hal-05829949v1",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.chim"
    ],
    [
      "openalex",
      "2208|Electrochemical sensors and biosensors"
    ]
  ],
  "openalex": "W7171627958",
  "pdf_url": "https://www.mdpi.com/2072-666X/17/8/908/pdf?version=1785316132",
  "pmcid": null,
  "pmid": null,
  "published": "2026-07-29",
  "publisher": "MDPI",
  "ris": "https://research.draconitic.com/paper/e815n4a2dvmem.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:00Z",
      "native_id": "hal-05829949",
      "source": "hal",
      "url": "https://hal.science/hal-05829949v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "hal:0.chim",
      "subfield": "general"
    }
  ],
  "title": "Electrochemical Sensing of Dopamine with a Nafion-Coated Reduced Graphene Oxide/Polypyrrole-Functionalized Magnetic Nanoparticles Composite",
  "title_text": "Electrochemical Sensing of Dopamine with a Nafion-Coated Reduced Graphene Oxide/Polypyrrole-Functionalized Magnetic Nanoparticles Composite",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:00Z",
  "url": "https://research.draconitic.com/paper/e815n4a2dvmem",
  "venue": "Micromachines",
  "versions": []
}