Discrete coordination nanochains based on photoluminescent dyes reveal intrachain exciton migration dynamics
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.
Authors
- Naoya Fukui (ORCID: https://orcid.org/0000-0003-4021-3193)
- Ryojun Toyoda (ORCID: https://orcid.org/0000-0002-0168-0533)
- Yuta Chiba (ORCID: https://orcid.org/0000-0001-5414-4411)
- Joe Komeda (ORCID: https://orcid.org/0009-0004-4460-9210)
- Hiroki Uratani (ORCID: https://orcid.org/0000-0002-8411-3429)
- Ryota Sakamoto (ORCID: https://orcid.org/0000-0002-8702-1378)
- Hikaru Takaya (ORCID: https://orcid.org/0000-0003-4688-7842)
- Hiroshi Nishihara (ORCID: https://orcid.org/0000-0002-6568-5640)
- Hiroaki Taniguchi (ORCID: https://orcid.org/0009-0005-1679-6992)
Institutions
- Karlsruhe Institute of Technology (DE)
- Teikyo University of Science (JP)
- Tokyo University of Science (JP)
- Tohoku University (JP)
- Kyoto University (JP)
- Institute for Molecular Science (JP)
Publication Details
- Journal
- Nature Communications
- Published
- 2025-02-04
- DOI
- https://doi.org/10.1038/s41467-025-56381-0
- Citations
- 4
- Primary Topic
- Luminescence and Fluorescent Materials
- Type
- article
- Field-Weighted Citation Impact
- 2.07
Funders
- Asahi Glass Foundation
- Nippon Sheet Glass Foundation for Materials Science and Engineering
- Ministry of Education, Culture, Sports, Science and Technology
- Japan Society for the Promotion of Science
- Japan Science and Technology Agency
- Institute for Materials Research, Tohoku University
- Research Institute for Information Technology, Kyushu University
- Division of Materials Research
- Precursory Research for Embryonic Science and Technology