{
  "abstract": "We determined the configurations of [2.2.2]-cryptand/KF/protonated threonine ([222]/KF/ThrH+) and permethylated β-cyclodextrin/KF/AAH+ (perm-CD/KF/AAH+, AA = Thr, Trp, Ser) host–guest complexes in solution by examining the characteristic peak positions in the 19F-NMR spectra. We focused on which functional groups (ammonium, hydroxyl and carboxyl) in AAH+ form hydrogen bonds (H-bond) with F− and/or with the solvent. We observed strong dependence of the H-bonding features on the solvents. With no complex formed in D2O, the ammonium only binding to F− in ethylene glycol-d6, and the carboxyl forming H-bond with F− in CH3OH-d4. The structures of permethylated β-cyclodextrin/KF/AAH+ (perm-CD/AAH+; AA = Thr, Trp, Ser) in solution were also elucidated by 19F-NMR spectroscopy. The characteristic peaks observed at −178 ∼ −171 ppm signified that only the carboxyl group binds at the K+F− bridge. The IRMPD spectra were scrutinized for the perm-CD/KF/AAH+ adducts in the gas phase generated by the electrospray/mass spectroscopic (ESI/MS) procedure. By comparing the configurations of the host–guest complexes in the two distinct phases, we found that the identified gas-phase complexes were structurally similar to those in solution.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Chemistry, Sogang University Seoul 04107 Republic of Korea",
    "Université Lyon 1, CNRS, Institut Lumière Matière, UMR5306 Villeurbanne F-69100 France",
    "Department of Applied Chemistry, Kyung Hee University Gyeonggi 17104 Republic of Korea"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "So Yeon Lee"
    },
    {
      "affs": [
        1
      ],
      "name": "Pengfei Xu"
    },
    {
      "affs": [
        2
      ],
      "name": "Young-Ho Oh",
      "orcid": "0000-0002-2337-5417"
    },
    {
      "affs": [
        0
      ],
      "name": "Hwa-Yong Jang"
    },
    {
      "affs": [
        1
      ],
      "name": "Richard Brédy",
      "orcid": "0000-0003-0196-3477"
    },
    {
      "affs": [
        1
      ],
      "name": "Isabelle Compagnon",
      "orcid": "0000-0003-2994-3961"
    },
    {
      "affs": [
        0
      ],
      "name": "Han Bin Oh",
      "orcid": "0000-0001-7919-0393"
    },
    {
      "affs": [
        2
      ],
      "name": "Sungyul Lee",
      "orcid": "0000-0002-6370-2662"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/beh7cge3w2cgp.bib",
  "cited_by": 0,
  "doi": "10.1039/d6ra06327f",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13732315/",
  "id": "beh7cge3w2cgp",
  "issns": [
    "2046-2069"
  ],
  "landing_url": "https://doi.org/10.1039/d6ra06327f",
  "language": "en",
  "licence": "CC-BY-NC-3.0",
  "licence_label": "CC BY-NC 3.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc/3.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Chemistry"
    ],
    [
      "openalex",
      "1605|Supramolecular Chemistry and Complexes"
    ]
  ],
  "openalex": "W7225241093",
  "pdf_url": null,
  "pmcid": "PMC13732315",
  "pmid": "42985473",
  "published": "2026-11-04",
  "publisher": "Royal Society of Chemistry",
  "ris": "https://research.draconitic.com/paper/beh7cge3w2cgp.ris",
  "sources": [
    {
      "first_seen": "2026-11-08T12:22:19Z",
      "native_id": "PMC13732315",
      "source": "pmc",
      "url": "https://doi.org/10.1039/d6ra06327f"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1605|Supramolecular Chemistry and Complexes",
      "subfield": "organic"
    }
  ],
  "title": "Probing the H-bonding features in [2.2.2]-cryptand/KF and permethylated β-cyclodextrin/KF complexed with protonated amino acids by 19F-NMR/IRMPD spectroscopy",
  "title_text": "Probing the H-bonding features in [2.2.2]-cryptand/KF and permethylated β-cyclodextrin/KF complexed with protonated amino acids by 19F-NMR/IRMPD spectroscopy",
  "type": "peer-reviewed",
  "updated_at": "2026-11-08T12:22:19Z",
  "url": "https://research.draconitic.com/paper/beh7cge3w2cgp",
  "venue": "RSC Advances",
  "versions": []
}