{
  "abstract": "Boroxine-linked covalent organic frameworks are difficult to form mechanochemically because dehydrative condensation generates water that can hydrolyse newly formed B₃O₃ linkages. This study examines whether deliberate preconditioning of 1,4-benzenediboronic acid (BDBA) can enable trimethylboroxine-free formation of porous COF-1. BDBA was sequentially vacuum-dried, manually ground, continuously sonicated in anhydrous 1,4-dioxane, isolated, thermally dried, and then subjected to liquid-assisted planetary ball milling with a 1:1 1,4-dioxane/mesitylene mixture. The preconditioned precursor showed changes in the O–H envelope and low-frequency boron–oxygen region relative to pristine BDBA; these changes were interpreted qualitatively because pristine BDBA also contains spectral structure near ~704 cm⁻¹. Milling at 1100 rpm for 40 min with 70 µL of liquid produced a material with FTIR, PXRD, ¹³C CP/MAS NMR, and ¹¹B MAS NMR signatures consistent with COF-1. A matched direct-milling control prepared from pristine BDBA remained spectroscopically less converted after identical work-up, indicating that precursor history affects the extent of conversion under the conditions examined. Nitrogen adsorption at 77 K gave an apparent BET surface area of 711 m² g⁻¹. Across four mechanochemical runs, the isolated product mass recovery was 60.0 ± 0.7%. These findings establish a trimethylboroxine-free route to porous COF-1 under the investigated conditions while supporting further quantitative investigation of precursor-conditioning effects.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "name": "Boris Irie-Bi"
    },
    {
      "name": "Junior N’goyé Kanga"
    },
    {
      "name": "Souleymane Tuo"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/d3jkajrd16ty0.bib",
  "cited_by": 0,
  "doi": "10.9734/ajocs/2026/v16i5482",
  "fulltext_url": null,
  "id": "d3jkajrd16ty0",
  "issns": [
    "2456-7795"
  ],
  "landing_url": "https://hal.science/hal-05776374v1",
  "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",
      "2505|Covalent Organic Framework Applications"
    ]
  ],
  "openalex": "W7215079869",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-01",
  "publisher": "Asian Journal of Chemical Sciences",
  "ris": "https://research.draconitic.com/paper/d3jkajrd16ty0.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:46Z",
      "native_id": "hal-05776374",
      "source": "hal",
      "url": "https://hal.science/hal-05776374v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|Covalent Organic Framework Applications",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Trimethylboroxine-free Mechanochemical Formation of Porous COF-1 from a Preconditioned Boronic-acid Precursor",
  "title_text": "Trimethylboroxine-free Mechanochemical Formation of Porous COF-1 from a Preconditioned Boronic-acid Precursor",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:46Z",
  "url": "https://research.draconitic.com/paper/d3jkajrd16ty0",
  "venue": "Asian Journal of Chemical Sciences",
  "versions": []
}