The influence of the molecular packing on the room temperature phosphorescence of purely organic luminogens

Nature Communications
Jie YangZhen Li

Abstract

Organic luminogens with persistent room temperature phosphorescence (RTP) have attracted great attention for their wide applications in optoelectronic devices and bioimaging. However, these materials are still very scarce, partially due to the unclear mechanism and lack of designing guidelines. Herein we develop seven 10-phenyl-10H-phenothiazine-5,5-dioxide-based derivatives, reveal their different RTP properties and underlying mechanism, and exploit their potential imaging applications. Coupled with the preliminary theoretical calculations, it is found that strong π-π interactions in solid state can promote the persistent RTP. Particularly, CS-CF3 shows the unique photo-induced phosphorescence in response to the changes in molecular packing, further confirming the key influence of the molecular packing on the RTP property. Furthermore, CS-F with its long RTP lifetime could be utilized for real-time excitation-free phosphorescent imaging in living mice. Thus, our study paves the way for the development of persistent RTP materials, in both the practical applications and the inherent mechanism.

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Citations

May 17, 2018·Chemical Communications : Chem Comm·Fan LiuZhen Li
Jul 4, 2018·Advanced Healthcare Materials·Ji QiBen Zhong Tang
Sep 20, 2018·Chemistry : a European Journal·Wenjie ChenPengfei Duan
Aug 3, 2018·Chemistry : a European Journal·Lu Xiao, Hongbing Fu
Dec 19, 2018·Chemistry : a European Journal·Elena LucentiElena Cariati
Feb 6, 2019·Advanced Materials·Marine LouisSebastian Reineke
Feb 24, 2019·Proceedings of the National Academy of Sciences of the United States of America·Xiaoyong JiaLiangliang Zhu
Feb 26, 2019·Angewandte Chemie·Shuai TianWei Huang
Apr 26, 2019·Angewandte Chemie·Deshuang TuZhongfu An
Jul 25, 2019·Angewandte Chemie·Deng-Gao ChenPi-Tai Chou
Sep 20, 2019·Nature Protocols·Luka ÐorđevićMaurizio Prato
Dec 19, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Xiao-Gang YangLu-Fang Ma
Feb 1, 2020·Small·Yongqiang YouWei Huang
Feb 13, 2019·Science Advances·Max GmelchSebastian Reineke
Jan 14, 2020·Advanced Materials·Zhonghao WangYanli Zhao
Feb 8, 2020·Chemistry, an Asian Journal·Jiahuan ZhiWei Huang

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Methods Mentioned

BETA
X-ray
phosphorescence
fluorescence imaging

Software Mentioned

CS

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