期刊
NANO LETTERS
卷 21, 期 8, 页码 3573-3580出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.1c00596
关键词
DNA origami; self-assembly; chiral plasmonic-excitonic systems; light-matter interactions; strong coupling
类别
资金
- National Basic Research Programs of China [2016YFA0301300, 2016YFA0201601, 2018YFA0208900]
- National Natural Science Foundations of China [21773044, 21721002, 22025201, 22072033, 21371008, 51761145044]
- K. C. Wong Education Foundation [GJTD-2018-03]
- Beijing Municipal Science & Technology Commission [Z191100004819008]
- Strategic Priority Research Program of Chinese Academy of Sciences [XDB36000000]
Studied strong light-matter interactions in chiral plexcitonic systems using chiral plasmonic nanocavities, revealing Rabi splitting and anticrossing behavior, enhancing understanding of the optical characteristics in such systems.
The exploitation of strong light-matter interactions in chiral plasmonic nanocavities may enable exceptional physical phenomena and lead to potential applications in nanophotonics, information communication, etc. Therefore, a deep understanding of strong light-matter interactions in chiral plasmonic-excitonic (plexcitonic) systems constructed by a chiral plasmonic nanocavity and molecular excitons is urgently needed. Herein, we systematically studied the strong light-matter interactions in gold nanorodbased chiral plexcitonic systems assembled on DNA origami. Rabi splitting and anticrossing behavior were observed in circular dichroism spectra, manifesting chiroptical characteristic hybridization. The bisignate line shape of the circular dichroism (CD) signal allows the accurate discrimination of hybrid modes. A large Rabi splitting of similar to 205/similar to 199 meV for left-handed/right-handed plexcitonic nanosystems meets the criterion of strong coupling. Our work deepens the understanding of light-matter interactions in chiral plexcitonic nanosystems and will facilitate the development of chiral quantum optics and chiroptical devices.
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