Construction of room temperature phosphorescent materials with ultralong lifetime by in-situ derivation strategy

被引：0
作者：
Qinglong Jia
Xilong Yan
Bowei Wang
Jiayi Li
Wensheng Xu
Zhuoyao Shen
Changchang Bo
Yang Li
Ligong Chen
机构：
[1] Tianjin University,School of Chemical Engineering and Technology
[2] Zhejiang Institute of Tianjin University,undefined
[3] Tianjin Engineering Research Center of Functional Fine Chemicals,undefined
[4] Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center,undefined
来源：
Nature Communications | / 14卷
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摘要：
Although room temperature phosphorescence (RTP) materials have been widely investigated, it is still a great challenge to improve the performance of RTP materials by promoting triplet exciton generation and stabilization. In this study, an in-situ derivation strategy was proposed to construct efficient RTP materials by in-situ deriving guest molecules and forming a rigid matrix during co-pyrolysis of guest molecules and urea. Characterizations and theoretical calculations revealed that the generated derivatives were beneficial for promoting intersystem crossing (ISC) to produce more triplet excitons, while rigid matrix could effectively suppress the non-radiative transition of triplet excitons. Thus, the in-situ derivation strategy was concluded to simultaneously promote the generation and stabilization of triplet excitons. With this method, the ultralong lifetime of RTP materials could reach up to 5.33 s and polychromatic RTP materials were easily achieved. Moreover, the potential applications of the RTP materials in reprocessing or editable anti-counterfeiting were successfully demonstrated.
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