Wide-range lifetime-tunable and responsive ultralong organic phosphorescent multi-host/guest system

Zongliang Xie, Xiayu Zhang, Hailan Wang, Cheng Huang, Haodong Sun, Mengyang Dong, Lei Ji, Zhongfu An, Tao Yu () and Wei Huang ()
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Zongliang Xie: Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) & Xi’an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University
Xiayu Zhang: School of Packaging and Materials Engineering, Hunan University of Technology
Hailan Wang: Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) & Xi’an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University
Cheng Huang: Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) & Xi’an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University
Haodong Sun: Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) & Xi’an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University
Mengyang Dong: Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) & Xi’an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University
Lei Ji: Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) & Xi’an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University
Zhongfu An: Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech)
Tao Yu: Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) & Xi’an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University
Wei Huang: Frontiers Science Center for Flexible Electronics, Xi’an Institute of Flexible Electronics (IFE) & Xi’an Institute of Biomedical Materials and Engineering (IBME), Northwestern Polytechnical University

Nature Communications, 2021, vol. 12, issue 1, 1-8

Abstract: Abstract The rational lifetime-tuning strategy of ultralong organic phosphorescence is extraordinarily important but seldom reported. Herein, a series of multi-host/guest ultralong organic phosphorescence materials with dynamic lifetime-tuning properties were reported. By doping a non-room-temperature phosphorescence emitter into various solid host matrices with continuously reduced triplet energy levels, a wide-range lifetime (from 3.9 ms gradually to 376.9 ms) phosphorescence with unchangeable afterglow colors were realized. Further studies revealed that the host matrices were employed to afford rigid environment and proper energy levels to generate and stabilize the long-live triplet excitons. Meanwhile, these multi-host/guest ultralong organic phosphorescence materials also exhibited excitation-dependent phosphorescence and temperature-controlled afterglow on/off switching properties, according to the virtue of various photophysical and thermal properties of the host matrices. This work provides a guiding strategy to realize lifetime-tuning ultralong organic phosphorescence with lifetime-order encoding characteristic towards widespread applications in time-resolved information displaying, higher-level security protection, and dynamic multi-dimensional anti-counterfeiting.

Date: 2021
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DOI: 10.1038/s41467-021-23742-4

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