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- Title
Ultralong organic phosphorescence from isolated molecules with repulsive interactions for multifunctional applications.
- Authors
Yao, Xiaokang; Ma, Huili; Wang, Xiao; Wang, He; Wang, Qian; Zou, Xin; Song, Zhicheng; Jia, Wenyong; Li, Yuxin; Mao, Yufeng; Singh, Manjeet; Ye, Wenpeng; Liang, Jian; Zhang, Yanyun; Liu, Zhuang; He, Yixiao; Li, Jingjie; Zhou, Zixing; Zhao, Zhu; Zhang, Yuan
- Abstract
Intermolecular interactions, including attractive and repulsive interactions, play a vital role in manipulating functionalization of the materials from micro to macro dimensions. Despite great success in generation of ultralong organic phosphorescence (UOP) by suppressing non-radiative transitions through attractive interactions recently, there is still no consideration of repulsive interactions on UOP. Herein, we proposed a feasible approach by introducing carboxyl groups into organic phosphors, enabling formation of the intense repulsive interactions between the isolated molecules and the matrix in rigid environment. Our experimental results show a phosphor with a record lifetime and quantum efficiency up to 3.16 s and 50.0% simultaneously in film under ambient conditions. Considering the multiple functions of the flexible films, the potential applications in anti-counterfeiting, afterglow display and visual frequency indicators were demonstrated. This finding not only outlines a fundamental principle to achieve bright organic phosphorescence in film, but also expands the potential applications of UOP materials. Despite great success in generation of ultralong organic phosphorescence (UOP) by suppressing non-radiative transitions through attractive interactions, consideration of repulsive interactions on UOP remains largely unexplored. Here, the authors introduce carboxyl groups into organic phosphors, enabling formation of the intense repulsive interactions between the isolated molecules and the matrix in rigid environment.
- Subjects
RADIATIONLESS transitions; PHOSPHORESCENCE; QUANTUM efficiency; CARBOXYL group; INTERMOLECULAR interactions; MOLECULES
- Publication
Nature Communications, 2022, Vol 13, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-022-32029-1