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Manipulating the Ultralong Organic Phosphorescence of Small Molecular Crystals
Author(s) -
Jia Wenyong,
Wang Qian,
Shi Huifang,
An Zhongfu,
Huang Wei
Publication year - 2020
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201904500
Subject(s) - phosphorescence , phosphor , intersystem crossing , materials science , nanotechnology , luminescence , persistent luminescence , exciton , photochemistry , optoelectronics , chemistry , physics , fluorescence , optics , atomic physics , singlet state , thermoluminescence , quantum mechanics , excited state
Ultralong organic phosphorescence (UOP) of metal‐free organic materials has received considerable attention recently owing to their long‐lived emission lifetimes, and the fact that they present an attractive alternative to persistent luminescence in inorganic phosphors. Enormous research effort has been devoted on improving UOP performance in metal‐free organic phosphors by promoting the intersystem crossing (ISC) process and suppressing the non‐radiative decay of triplet state excitons. This minireview summarizes the recent advances in the rational approaches for manipulating the UOP properties of small molecular crystals, such as phosphorescence lifetime, efficiency, and emission colors. Finally, the present challenges and future development of this field are proposed. This review will provide a guideline to rationally design more advanced metal‐free organic phosphorescence materials for potential applications.