{
  "abstract": "Advances in nonlinear optical (NLO) materials are central to the development of ultrafast photonic and optoelectronic technologies, where macroscopic response is strongly governed by chromophore geometry and orientational order. Here, we employ mechanically non-trivial metal-organic architectures as a molecular engineering strategy to impose and stabilize threedimensional chromophore arrangements, enabling systematic tuning of ultrafast second-and third-order NLO responses. The NLO response of two types of topologically non-trivial complexes, namely [2]catenates ([2]C) and trefoil knots (TK), based on Zn(II) and Cd(II) centers are investigated in guest-host PMMA thin films and nanoconfined environments. Pyrene-functionalized Zn(II)-based architectures exhibit pronounced second-and thirdharmonic generation (SHG and THG, respectively), reaching first and second hyperpolarizabilities up to β of 43.66 × 10 -38 m 4 V -1 and 102.67 × 10 -47 m 5 V -2 highlighting the role of extended π-conjugation and intramolecular charge transfer. Z-scan measurements reveal self-focusing behavior and architecture-dependent refractive index modulation. Incorporation of these architectures into nanoporous alumina membranes leads to a marked enhancement of SHG relative to thin films, consistent with the combined effects of nanoscale confinement and partial orientational ordering induced within the nanoporous environment. These results establish mechanically non-trivial metal-organic architectures as versatile platforms in which molecular topology, metal coordination, and ligand-centered electronic structure collectively govern ultrafast NLO response.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 10,
  "authors": [
    {
      "name": "Karolina Waszkowska"
    },
    {
      "name": "Thirumurugan Prakasam"
    },
    {
      "name": "Nowshin Kabir"
    },
    {
      "name": "Abdelkrim El-Ghayoury"
    },
    {
      "name": "Anna Zawadzka"
    },
    {
      "name": "Monika Lelonek"
    },
    {
      "name": "Carlos Platas-Iglesias"
    },
    {
      "name": "Mourad Elhabiri"
    },
    {
      "name": "Ali Trabolsi"
    },
    {
      "name": "Bouchta Sahraoui"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/735v426vm35y7.bib",
  "cited_by": 0,
  "doi": "10.1002/adom.71518",
  "fulltext_url": null,
  "id": "735v426vm35y7",
  "issns": [
    "2195-1071"
  ],
  "landing_url": "https://hal.science/hal-05839614v1",
  "language": "en",
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.chim"
    ],
    [
      "openalex",
      "2504|Nonlinear Optical Materials Research"
    ]
  ],
  "openalex": "W7202002465",
  "pdf_url": "https://hal.science/hal-05839614/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-08-08",
  "publisher": "Wiley",
  "ris": "https://research.draconitic.com/paper/735v426vm35y7.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:01Z",
      "native_id": "hal-05839614",
      "source": "hal",
      "url": "https://hal.science/hal-05839614v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2504|Nonlinear Optical Materials Research",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Topological Engineering of Metal-Organic Architectures for Tunable Ultrafast Nonlinear Optical Responses",
  "title_text": "Topological Engineering of Metal-Organic Architectures for Tunable Ultrafast Nonlinear Optical Responses",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:01Z",
  "url": "https://research.draconitic.com/paper/735v426vm35y7",
  "venue": "Advanced Optical Materials",
  "versions": []
}