A dish-like molecular architecture for dynamic ultralong room-temperature phosphorescence through reversible guest accommodation

Wenlang Li, Qiuyi Huang, Zhu Mao, Xiaoyi He, Dongyu Ma, Juan Zhao (), Jacky W. Y. Lam, Yi Zhang, Ben Zhong Tang () and Zhenguo Chi ()
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Wenlang Li: Sun Yat-sen University
Qiuyi Huang: Sun Yat-sen University
Zhu Mao: Sun Yat-sen University
Xiaoyi He: Sun Yat-sen University
Dongyu Ma: Sun Yat-sen University
Juan Zhao: Sun Yat-sen University
Jacky W. Y. Lam: The Hong Kong University of Science and Technology, Kowloon
Yi Zhang: Sun Yat-sen University
Ben Zhong Tang: The Hong Kong University of Science and Technology, Kowloon
Zhenguo Chi: Sun Yat-sen University

Nature Communications, 2022, vol. 13, issue 1, 1-11

Abstract: Abstract Developing dynamic organic ultralong room-temperature phosphorescent (URTP) materials is of practical importance in various applications but remains a challenge due to the difficulty in manipulating aggregate structures. Herein, we report a dish-like molecular architecture via a bottom-up way, featuring guest-responsive dynamic URTP. Through controlling local fragment motions in the molecular architecture, fascinating dynamic URTP performances can be achieved in response to reversible accommodation of various guests, including solvents, alkyl bromides and even carbon dioxide. Large-scale regulations of phosphorescence lifetime (100-fold) and intensity (10-fold) can be realized, presenting a maximum phosphorescence efficiency and lifetime of 78.8% and 483.1 ms, respectively. Moreover, such a dish-like molecular architecture is employed for temperature-dependent multiple information encryption and visual identification of linear alkyl bromides. This work can not only deepen our understanding to construct multifunctional organic aggregates, but also facilitate the design of high-performance dynamic URTP materials and enrich their practical applications.

Date: 2022
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DOI: 10.1038/s41467-022-35155-y

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