{
  "abstract": "Rapid low-ppm detection of toxic and corrosive hydrogen sulfide (H2S) is essential to protect workers and the public. This research presents the synthesis and gas-sensing application of two electroactive poly(amic acid)s (EPAAs): a linear-type (L-EPAA) and a branched-type (B-EPAA). Synthesized via condensation polymerization using electroactive diamine monomers composed of linear and pendant side-chain double-terminal aniline tetramers, their chemical structures, molecular weight, electroactivity, and conductivity were verified using ATR-FTIR, GPC, cyclic voltammetry, and four-point probe testing. To significantly increase the specific surface area, electrospinning technology was employed to fabricate a porous fiber film (B-EPAA-ES). All samples were deposited onto interdigitated electrodes to evaluate their H2S gas sensing properties. Among the tested results, the electrospun B-EPAA-ES film demonstrated the most outstanding performance, exhibiting a 47.4% response to 10 ppm of H2S with a rapid response time of 53.1 s. Moreover, the sensor displayed remarkable reproducibility (CV of 0.2% over three cycles) and the H2S response is unaffected by other gases. Ultimately, the B-EPAA-ES film combines high processability of poly(amic acid), reversible redox properties of side-chain aniline tetramers, and a large specific surface area. This synergistic combination enables highly repeatable H2S detection and the response is unaffected by other gases.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Textile Technology and Innovation Application Engineering, Chinese Culture University, Yang-Ming-Shan, Taipei City 11114, Taiwan",
    "Department of Chemistry, Chung Yuan Christian University, Chung Li District, Taoyuan City 32023, Taiwan"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Kung-Chin Chang",
      "orcid": "0009-0003-4681-5416"
    },
    {
      "affs": [
        1
      ],
      "name": "Ting-Ying Lai"
    },
    {
      "affs": [
        1
      ],
      "name": "Kun-Hao Luo"
    },
    {
      "affs": [
        1
      ],
      "name": "Yung-Chen Lin"
    },
    {
      "affs": [
        1
      ],
      "name": "Yen-Lin Lin"
    },
    {
      "affs": [
        1
      ],
      "name": "Jui-Ming Yeh",
      "orcid": "0000-0003-2930-0405"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/93md99gwjar2g.bib",
  "cited_by": 0,
  "doi": "10.3390/polym18202457",
  "fulltext_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13709082/?tool=EBI",
  "id": "93md99gwjar2g",
  "issns": [
    "2073-4360"
  ],
  "landing_url": "https://www.mdpi.com/2073-4360/18/20/2457",
  "language": "eng",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2208|Gas Sensing Nanomaterials and Sensors"
    ]
  ],
  "openalex": "W7221076769",
  "pdf_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13709082/pdf/?tool=EBI",
  "pmcid": "PMC13709082",
  "pmid": null,
  "published": "2026-10-01",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/93md99gwjar2g.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:44Z",
      "native_id": "10.3390/polym18202457",
      "source": "crossref",
      "url": "https://www.mdpi.com/2073-4360/18/20/2457"
    },
    {
      "first_seen": "2026-10-30T12:21:40Z",
      "native_id": "PMC:PMC13709082",
      "source": "europepmc",
      "url": "https://europepmc.org/article/PMC/PMC13709082"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "issn:2073-4360",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Comparative Gas-Sensing Studies of EPAA with Aniline Tetramer in the Main/Side Chain and Corresponding Densely/Porous Electro-Spun Films",
  "title_text": "Comparative Gas-Sensing Studies of EPAA with Aniline Tetramer in the Main/Side Chain and Corresponding Densely/Porous Electro-Spun Films",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:21:40Z",
  "url": "https://research.draconitic.com/paper/93md99gwjar2g",
  "venue": "Polymers",
  "versions": []
}