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Near‐Infrared‐Excited Multicolor Afterglow in Carbon Dots‐Based Room‐Temperature Afterglow Materials
Author(s) -
Zheng Yihao,
Wei Haopeng,
Liang Ping,
Xu Xiaokai,
Zhang Xingcai,
Li Huihong,
Zhang Chenlu,
Hu Chaofan,
Zhang Xuejie,
Lei Bingfu,
Wong WaiYeung,
Liu Yingliang,
Zhuang Jianle
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202108696
Subject(s) - afterglow , excited state , photon upconversion , infrared , materials science , radiative transfer , optoelectronics , chemistry , atomic physics , luminescence , optics , physics , gamma ray burst , astronomy
Room‐temperature afterglow (RTA) materials with long lifetime have shown tremendous application prospects in many fields. However, there is no general design strategy to construct near‐infrared (NIR)‐excited multicolor RTA materials. Herein, we report a universal approach based on the efficient radiative energy transfer that supports the reabsorption from upconversion materials (UMs) to carbon dots‐based RTA materials (CDAMs). Thus, the afterglow emission (blue, cyan, green, and orange) of various CDAMs can be activated by UMs under the NIR continuous‐wave laser excitation. The efficient radiative energy transfer ensured the persistent multicolor afterglow up to 7 s, 6 s, 5 s, and 0.5 s by naked eyes, respectively. Given the unusual afterglow properties, we demonstrated preliminary applications in fingerprint recognition and information security. This work provides a new avenue for the activation of NIR‐excited afterglow in CDAMs and will greatly expand the applications of RTA materials.