Ultralong organic phosphorescence from isolated molecules with repulsive interactions for multifunctional applications

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 t...

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Detalles Bibliográficos
Autores principales: 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, Niu, Guowei, Yin, Chengzhu, Zhang, Shasha, Shi, Huifang, Huang, Wei, An, Zhongfu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9391375/
https://www.ncbi.nlm.nih.gov/pubmed/35986007
http://dx.doi.org/10.1038/s41467-022-32029-1
Descripción
Sumario: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.