{
  "abstract": "Conventional aromatic polyimides suffer from poor solubility, high water absorption and low visible-light transmittance due to strong interchain charge transfer complex (CTC) interactions, limiting their microelectronic and optoelectronic applications. Here, a novel asymmetric bio-based diamine ENDAP bearing a 3,4,5,6,7,8-hexahydro-2H-2,4a-epoxynaphthalene-3,4-diyl (HEN) alicyclic skeleton was synthesized from menthofuran via a four-step route. ENDAP was polymerized with five commercial dianhydrides to give polyimide films. GPC gave Mn of 3.17–4.68 × 104 and Mw of 4.51–7.94 × 104 Da. These amorphous polyimides, with d-spacings of 4.70–5.49 Å, were mostly soluble in polar aprotic solvents. Water contact angles were 83.3–98.6°, with a minimum water absorption of 0.36% after 48 h. Tg ranged from 164 to 211 °C, the maximum T10 was 451 °C under N2, cutoff wavelengths were 353–388 nm, and maximum T450 of 83.6% and maximum T500 of 86.1%. The HEN skeleton contributes to improved solubility, reduced water absorption and enhanced transparency, likely by weakening CTC interactions and loosening chain packing, as reflected by the enlarged interchain d-spacing, although the extent depends on the dianhydride structure. This work suggests that renewable semi-alicyclic polyimides are potential candidates for microelectronic and optoelectronic applications.",
  "abstract_shown": true,
  "affiliations": [
    "School of Pharmacy, Nanchang Medical College, Nanchang 330052, China",
    "College of Science and Technology, Nanchang University, Gongqingcheng 332020, China",
    "School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Lei Xiong"
    },
    {
      "affs": [
        0
      ],
      "name": "Xuwen Sun"
    },
    {
      "affs": [
        0
      ],
      "name": "Tao Yuan"
    },
    {
      "affs": [
        1
      ],
      "name": "Bing Xiong"
    },
    {
      "affs": [
        2
      ],
      "name": "Yanxiang Mao"
    },
    {
      "affs": [
        2
      ],
      "name": "Haixia Qi"
    },
    {
      "affs": [
        2
      ],
      "name": "Feng Liu",
      "orcid": "0000-0001-5817-2559"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/dcn7wtgp4vwym.bib",
  "cited_by": 0,
  "doi": "10.3390/polym18212771",
  "fulltext_url": null,
  "id": "dcn7wtgp4vwym",
  "issns": [
    "2073-4360"
  ],
  "landing_url": "https://www.mdpi.com/2073-4360/18/21/2771",
  "language": null,
  "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": null,
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-06",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/dcn7wtgp4vwym.ris",
  "sources": [
    {
      "first_seen": "2026-11-10T00:21:22Z",
      "native_id": "10.3390/polym18212771",
      "source": "crossref",
      "url": "https://www.mdpi.com/2073-4360/18/21/2771"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "issn:2073-4360",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Synthesis and Properties of Semi-Alicyclic Polyimides Based on an Asymmetric Diamine from Renewable Menthofuran",
  "title_text": "Synthesis and Properties of Semi-Alicyclic Polyimides Based on an Asymmetric Diamine from Renewable Menthofuran",
  "type": "peer-reviewed",
  "updated_at": "2026-11-10T00:21:22Z",
  "url": "https://research.draconitic.com/paper/dcn7wtgp4vwym",
  "venue": "Polymers",
  "versions": []
}