{
  "abstract": "Here, we report the synthesis and photoreactivity of a phenothiazine fused [4]helicene, namely 3,13dimethoxybenzo[4,5]quinolino[3,2,1-kl]phenothiazine (MBQP). Comprehensive photophysical studies reveal that MBQP exhibits a high photoluminescence quantum yield of 60.3% and strong circularly-polarized luminescence, with high glum of 2.0 × 10-3 in DMSO. Besides its excellent chiroptical properties, MBQP can undergo a photoinduced chloroformylation reaction upon 365 nm irradiation in chloroform, enabling direct functionalization of the helicene framework. Notably, the emission of resulting photoproducts redshift to ~500, 550, and 660 nm, together with quantum yields up to 77.2%, demonstrating that the photochemical transformation can simultaneously functionalize the helicene framework and improve its luminescence performance. This work provides a straightforward example for the facile synthesis and post-functionalization of color-tunable chiral materials.",
  "abstract_shown": true,
  "affiliations": [
    "School of Science and Engineering",
    "Chinese University of Hong Kong (Shenzhen",
    "Chemistry and Chemical Engineering Guangdong Laboratory",
    "Institute of Materials Research",
    "Tsinghua Shenzhen International Graduate School, Tsinghua University"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 8,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Ling-Xiao Li"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Gaoqiang Xu"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Yue Zhang"
    },
    {
      "affs": [
        2
      ],
      "name": "Yonghong Xiao"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Guiyi Yang"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Yanning Xu"
    },
    {
      "affs": [
        3,
        4
      ],
      "name": "Parvej Alam"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Zijie Qiu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2sk7h1rts1gtr.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15008968/v1",
  "fulltext_url": null,
  "id": "2sk7h1rts1gtr",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008968/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",
      "1605|Synthesis and Properties of Aromatic Compounds"
    ]
  ],
  "openalex": "W7213471062",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15008968/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-17",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/2sk7h1rts1gtr.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:19Z",
      "native_id": "10.26434/chemrxiv.15008968",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008968/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1605|Synthesis and Properties of Aromatic Compounds",
      "subfield": "organic"
    }
  ],
  "title": "Photosensitive Phenothiazine-Fused [4]Helicenes",
  "title_text": "Photosensitive Phenothiazine-Fused [4]Helicenes",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:19Z",
  "url": "https://research.draconitic.com/paper/2sk7h1rts1gtr",
  "venue": "ChemRxiv",
  "versions": []
}