Mechano-induced persistent room-temperature phosphorescence from purely organic molecules

Chemical Science
Yingxiao MuMatthew 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 "tu...Continue Reading

References

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Citations

Aug 10, 2018·Chemistry, an Asian Journal·Eethamukkala UbbaZhenguo Chi
Dec 20, 2018·Angewandte Chemie·Sanjoy Mukherjee, Pakkirisamy Thilagar
Feb 12, 2020·Angewandte Chemie·Jian-Xin WangQing-Zheng Yang
Mar 13, 2020·Chemistry : a European Journal·Zheng WangCheng-Yong Su
Mar 12, 2020·Chemistry : a European Journal·Lili HuangZhiyong Ma
Jan 15, 2021·Journal of the American Chemical Society·Huangtianzhi ZhuFeihe Huang
Feb 17, 2021·The Journal of Physical Chemistry Letters·Binbin SuZhiguo Xia
Apr 1, 2021·Advanced Materials·Yixi Zhuang, Rong-Jun Xie
Apr 2, 2021·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Xiaofei SunChuipeng Kong
Nov 13, 2018·Inorganic Chemistry·Ying MuGuo-Ming Wang
Jul 9, 2020·The Journal of Physical Chemistry Letters·Long GuWei Huang
Apr 11, 2020·ACS Applied Materials & Interfaces·Hongwei WuYanli Zhao
Sep 24, 2019·The Journal of Physical Chemistry. a·A Mohan RajV Ramamurthy

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Methods Mentioned

BETA
IEC
nuclear magnetic resonance
X-ray
phosphorescence

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