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Discrete coordination nanochains based on photoluminescent dyes reveal intrachain exciton migration dynamics

Author

Listed:
  • Ryojun Toyoda

    (Aoba-ku)

  • Naoya Fukui

    (Noda)

  • Haru Taniguchi

    (Aoba-ku)

  • Hiroki Uratani

    (Kyoto University)

  • Joe Komeda

    (Hermann-von-Helmholtz-Platz 1)

  • Yuta Chiba

    (Aoba-ku)

  • Hikaru Takaya

    (Adachi-ku
    Myodaiji)

  • Hiroshi Nishihara

    (Noda)

  • Ryota Sakamoto

    (Aoba-ku
    Division for the Establishment of Frontier Sciences of Organization for Advanced Studies at Tohoku University)

Abstract

Elucidating exciton migration in polymer chains has been one of the major research goals in photophysics for over half a century. While great efforts have been made to understand picosecond phenomena by ultrafast spectroscopy, ambiguous molecular conformations and/or random polymer sequences have hindered the construction of an ideal exciton migration model. Here we present the creation of unique end-capped coordination nanochains and quantitative description of intrachain exciton migration therein. The nanochain features unique molecular architectures in discrete polynuclear complexes, with a linear and rigid structure, the defined number of metal nuclei, and charge neutrality. These features allow well-defined arrangement of emissive dye moieties, making the nanochain a sound platform for studying exciton dynamics. Readily accessible absorption spectroscopy, and photoluminescence lifetime and quantum yield measurements allow the construction of continuous-time Markov chains model, thereby estimating non-trivial exciton migration across the metal center.

Suggested Citation

  • Ryojun Toyoda & Naoya Fukui & Haru Taniguchi & Hiroki Uratani & Joe Komeda & Yuta Chiba & Hikaru Takaya & Hiroshi Nishihara & Ryota Sakamoto, 2025. "Discrete coordination nanochains based on photoluminescent dyes reveal intrachain exciton migration dynamics," Nature Communications, Nature, vol. 16(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-56381-0
    DOI: 10.1038/s41467-025-56381-0
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    References listed on IDEAS

    as
    1. Shinnosuke Horiuchi & Yuki Tachibana & Mitsuki Yamashita & Koji Yamamoto & Kohei Masai & Kohei Takase & Teruo Matsutani & Shiori Kawamata & Yuki Kurashige & Takeshi Yanai & Tetsuro Murahashi, 2015. "Multinuclear metal-binding ability of a carotene," Nature Communications, Nature, vol. 6(1), pages 1-8, November.
    2. Ryojun Toyoda & Nong V. Hoang & Kiana Gholamjani Moghaddam & Stefano Crespi & Daisy R. S. Pooler & Shirin Faraji & Maxim S. Pshenichnikov & Ben L. Feringa, 2022. "Synergistic interplay between photoisomerization and photoluminescence in a light-driven rotary molecular motor," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
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