具有空间电荷转移热激活延迟荧光的动态可逆全色压致变色荧光团及其作为X射线成像闪烁体的应用
Dynamic Reversible Full-Color Piezochromic Fluorogens Featuring Through-Space Charge-Transfer Thermally Activated Delayed Fluorescence and their Application as X-Ray Imaging Scintillators.
作者信息
Yang Wei, Xie Chenlong, Chen Tianhao, Yin Xiaojun, Lin Qianqian, Gong Shaolong, Quan Zewei, Yang Chuluo
机构信息
Shenzhen Key Laboratory of New Information Display and Storage Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, People's Republic of China.
Department of Chemistry, Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong 518055, China.
出版信息
Angew Chem Int Ed Engl. 2024 May 13;63(20):e202402704. doi: 10.1002/anie.202402704. Epub 2024 Mar 14.
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.
具有空间电荷转移（TSCT）的热激活延迟荧光（TADF）发光体因其结构动力学特性，有望成为压致变色发光（PCL）材料的理想候选者。空间供体-受体（D-A）堆积排列能够在不同压力条件下调节分子间和分子内的D-A相互作用以及空间电荷转移状态。在此，我们展示了一种制备具有TSCT-TADF特性的动态可逆全色PCL材料的有效方法。它们的单晶呈现出跨度为170 nm的全色域PCL过程。此外，TSCT-TADF-PCL发光体具有统一的光致发光量子产率，并在X射线闪烁体成像中显示出良好的应用前景。
Zotero 插件