{
  "abstract": "This study reveals a surprising finding that a chiral cationic pyrrolidine-substituted naphthalene diimide (cNDI-Py + ), which shows no circular dichroism (CD) or circularly polarized luminescence (CPL) in its monomeric form, exhibits strong CD and broad, intense CPL when electrostatically bound to a 2D synthetic laponite nanoclay nanoplatelet (cNDI-Py + _Laponite) in an aqueous environment. This supramolecular alignment of the electrostatically anchored dye on laponite platelets leads to a chiral assembly that produces distinctive chiral excimer emission, stemming from an excited-state slip-stacked arrangement of preorganized dye molecules. The new hybrid emission band at 480 nm comes from the excited cNDI-Py+_Laponite assembly, as evidenced by a high quantum yield (Φ) of 0.40, luminescence dissymmetry (g lum ) of -0.013, and an outstanding CPL brightness of 88 M -1 cm -1 . We demonstrate that chiral dye-nanoclay assemblies serve as an underused platform for excimer-based CPL by nanoscale confinement of dye molecules. Bright circularly polarized emissions can play an important role in establishing experimental space-to-ground telecommunication links, enabling full-color 3D holographic displays, and supporting other applications that rely on chiral control of light-matter interactions. This approach provides oxygen-tolerant control with inorganic templates, enabling enantioselective excimer emission and opening new paths for CPL-active materials.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Chemistry and The Institute for Lasers, Photonics and Biophotonics",
    "University at Buffalo (SUNY",
    "Department of Chemical Sciences",
    "Indian Institute of Science Education and Research (IISER",
    "Air Force Research Laboratory",
    "Materials and Manufacturing Directorate",
    "Department of Chemical Engineering",
    "Indian Institute of Technology Kanpur"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 10,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Jojo P. Joseph"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Subhankar Paul"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Sonal Gupta"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Evgenii Oskolkov"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Guang S. He"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Alexander Baev"
    },
    {
      "affs": [
        4,
        5
      ],
      "name": "Richard A. Vaia"
    },
    {
      "affs": [
        6,
        7
      ],
      "name": "Yogesh M. Joshi"
    },
    {
      "affs": [
        2,
        3
      ],
      "name": "Debangshu Chaudhuri"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Paras N. Prasad",
      "orcid": "0000-0002-0905-7084"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/28g89wqvy04fc.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15010509/v1",
  "fulltext_url": null,
  "id": "28g89wqvy04fc",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010509/v1",
  "language": null,
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2505|Luminescence and Fluorescent Materials"
    ]
  ],
  "openalex": "W7222246990",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-15",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/28g89wqvy04fc.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:24Z",
      "native_id": "10.26434/chemrxiv.15010509",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010509/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|Luminescence and Fluorescent Materials",
      "subfield": "materials-polymers"
    }
  ],
  "title": "De Novo Circularly Polarized Emission and Greatly Enhanced Circular Dichroism in Cationic Naphthalene Diimide Dye Supramolecular Assembly on 2-D Laponite Nanoclay",
  "title_text": "De Novo Circularly Polarized Emission and Greatly Enhanced Circular Dichroism in Cationic Naphthalene Diimide Dye Supramolecular Assembly on 2-D Laponite Nanoclay",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:24Z",
  "url": "https://research.draconitic.com/paper/28g89wqvy04fc",
  "venue": "ChemRxiv",
  "versions": []
}