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- Title
Dynamic Reversible Full‐Color Piezochromic Fluorogens Featuring Through‐Space Charge‐Transfer Thermally Activated Delayed Fluorescence and their Application as X‐Ray Imaging Scintillators.
- Authors
Yang, Wei; Xie, Chenlong; Chen, Tianhao; Yin, Xiaojun; Lin, Qianqian; Gong, Shaolong; Quan, Zewei; Yang, Chuluo
- Abstract
Thermally activated delayed fluorescence (TADF) emitters featuring through‐space charge transfer (TSCT) can be excellent candidates for piezochromic luminescent (PCL) materials due to their structural dynamics. Spatial donor‐acceptor (D−A) stacking arrangements enable the modulation of inter‐ and intramolecular D−A interactions, as well as spatial charge transfer states, under varying pressure conditions. Herein, we demonstrate an effective approach toward dynamic reversible full‐color PCL materials with TSCT‐TADF characteristics. Their single crystals exhibit a full‐color‐gamut PCL process spanning a range of 170 nm. Moreover, the TSCT‐TADF‐PCL emitters display a unity photoluminescence quantum yield, and show promising application in X‐ray scintillator imaging.
- Subjects
DELAYED fluorescence; X-ray fluorescence; SCINTILLATORS; X-ray imaging; CHARGE transfer; STRUCTURAL dynamics
- Publication
Angewandte Chemie, 2024, Vol 136, Issue 20, p1
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202402704