Volume 135, Issue 13 e202218670
Forschungsartikel

Ultra-long Near-infrared Repeatable Photochemical Afterglow Mediated by Reversible Storage of Singlet Oxygen for Information Encryption

Lei Chen

Lei Chen

Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Academy for Engineering and Technology, Fudan University, Shanghai, 200433 China

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Kuangshi Sun

Kuangshi Sun

Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Academy for Engineering and Technology, Fudan University, Shanghai, 200433 China

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Dr. Donghao Hu

Dr. Donghao Hu

Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Academy for Engineering and Technology, Fudan University, Shanghai, 200433 China

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Dr. Xianlong Su

Dr. Xianlong Su

Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Academy for Engineering and Technology, Fudan University, Shanghai, 200433 China

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Linna Guo

Linna Guo

Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Academy for Engineering and Technology, Fudan University, Shanghai, 200433 China

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Jiamiao Yin

Jiamiao Yin

Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Academy for Engineering and Technology, Fudan University, Shanghai, 200433 China

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Yuetian Pei

Yuetian Pei

Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Academy for Engineering and Technology, Fudan University, Shanghai, 200433 China

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Yiwei Fan

Yiwei Fan

Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Academy for Engineering and Technology, Fudan University, Shanghai, 200433 China

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Prof. Qian Liu

Prof. Qian Liu

Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Academy for Engineering and Technology, Fudan University, Shanghai, 200433 China

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Prof. Ming Xu

Corresponding Author

Prof. Ming Xu

Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Academy for Engineering and Technology, Fudan University, Shanghai, 200433 China

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Prof. Wei Feng

Prof. Wei Feng

Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Academy for Engineering and Technology, Fudan University, Shanghai, 200433 China

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Prof. Fuyou Li

Corresponding Author

Prof. Fuyou Li

Department of Chemistry & State Key Laboratory of Molecular Engineering of Polymers & Academy for Engineering and Technology, Fudan University, Shanghai, 200433 China

Institute of Translational Medicine, Shanghai Jiao Tong University, Shanghai, 200240 China

Yiwu Research Institute, Fudan University, Jinhua, Yiwu, 322000 China

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First published: 01 February 2023
Citations: 1

Abstract

Photochemical afterglow systems have drawn considerable attention in recent years due to their regulable photophysical properties and charming application potential. However, conventional photochemical afterglow suffered from its unrepeatability due to the consumption of energy cache units as afterglow photons are emitted. Here we report a novel strategy to realize repeatable photochemical afterglow (RPA) through the reversible storage of 1O2 by 2-pyridones. Near-infrared afterglow with a lifetime over 10 s is achieved, and its initial intensity shows no significant reduction over 50 excitation cycles. A detailed mechanism study was conducted and confirmed the RPA is realized through the singlet oxygen-sensitized fluorescence emission. Furthermore, the generality of this strategy is demonstrated and tunable afterglow lifetimes and colors are achieved by rational design. The developed RPA is further applied for attacker-misleading information encryption, presenting a repeatable-readout.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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