Yingxiao Mu
Mechano-induced persistent room-temperature phosphorescence from purely organic molecules
Mu, Yingxiao; Yang, Zhiyong; Chen, Junru; Yang, Zhan; Li, Wenlang; Tan, Xianbao; Mao, Zhu; Yu, Tao; Zhao, Juan; Zheng, Shizhao; Liu, Siwei; Zhang, Yi; Chi, Zhenguo; Xu, Jiarui; Aldred, Matthew. P.
Authors
Zhiyong Yang
Junru Chen
Zhan Yang
Wenlang Li
Xianbao Tan
Zhu Mao
Tao Yu
Juan Zhao
Shizhao Zheng
Siwei Liu
Yi Zhang
Zhenguo Chi
Jiarui Xu
Matthew. P. Aldred
Abstract
The persistent room-temperature phosphorescence (RTP) of purely organic materials in the solid state has recently attracted much research interest and found promising, rapid and visual applications by the naked eye, after the removal of the excitation source. However, almost all reported organic persistent RTP processes are induced by using a UV-light irradiation source. In this report, persistent RTP with an emission lifetime as long as 0.15 s which can be induced not only by photoirradiation but also by mechanical action is presented, which merges mechano-induced luminescence and persistent RTP together. It is found that such persistent RTP is produced through intermolecular electronic coupling (IEC) of units with different excited state configurations. Interestingly, there are two different crystals with and without mechano-induced persistent RTP which can be grown from this organic material, as such a new type of mechano-luminescence (ML) is strongly dependent on their intermolecular interactions. Furthermore, the intensity of such mechano-induced persistent RTP can be increased by lowing the temperature as well, similar to that of photo-induced persistent RTP. Notably, these two crystals exhibit a ML enhancement and ML “turn on”, respectively, with decreasing temperature. Therefore, such mechano-induced persistent RTP provides an example of new types of organic luminescent materials, which is a missing jigsaw piece of organic luminescence and important for both fundamental research and practical applications of both persistent RTP and ML of organic materials.
Citation
Mu, Y., Yang, Z., Chen, J., Yang, Z., Li, W., Tan, X., …Aldred, M. P. (2018). Mechano-induced persistent room-temperature phosphorescence from purely organic molecules. Chemical Science, 9(15), 3782-3787. https://doi.org/10.1039/c8sc00429c
Journal Article Type | Article |
---|---|
Acceptance Date | Mar 18, 2018 |
Online Publication Date | Mar 19, 2018 |
Publication Date | Apr 21, 2018 |
Deposit Date | May 3, 2018 |
Publicly Available Date | May 3, 2018 |
Journal | Chemical Science |
Print ISSN | 2041-6520 |
Electronic ISSN | 2041-6539 |
Publisher | Royal Society of Chemistry |
Peer Reviewed | Peer Reviewed |
Volume | 9 |
Issue | 15 |
Pages | 3782-3787 |
DOI | https://doi.org/10.1039/c8sc00429c |
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http://creativecommons.org/licenses/by/4.0/
Copyright Statement
This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
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