Anomalous anti-Kasha excited-state luminescence from symmetry-breaking heterogeneous carbon bisnanohoops

Xinyu Zhang, Cheng Chen, Wen Zhang, Nan Yin, Bing Yuan, Guilin Zhuang, Xiao-Ye Wang and Pingwu Du ()
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Xinyu Zhang: University of Science and Technology of China
Cheng Chen: Nankai University
Wen Zhang: University of Science and Technology of China
Nan Yin: University of Science and Technology of China
Bing Yuan: University of Science and Technology of China
Guilin Zhuang: Zhejiang University of Technology
Xiao-Ye Wang: Nankai University
Pingwu Du: University of Science and Technology of China

Nature Communications, 2024, vol. 15, issue 1, 1-9

Abstract: Abstract It is a long-standing scientific controversy to achieve anti-Kasha-type multiple emissions by tuning the structures at a molecular level. Although it is known that some conjugated structures have excitation-dependent multiple emissions, no all-benzenoid molecules have yet been reported, the emissions of which originate from different excited states. Herein, we report the design of two symmetry-breaking heterogeneous carbon bisnanohoops that in solution become multiple fluorescent emitters with unusual anti-Kasha characteristics. This phenomenon can be spectroscopically and theoretically explained and will find applications in a wide range of sensing and imaging technologies.

Date: 2024
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DOI: 10.1038/s41467-024-46848-x

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