Organic molecules with dual triplet-harvesting channels enable efficient X-ray scintillation and imaging

作     者：Lisi Zhan Yalun Xu Tianhao Chen Yang Tang Cheng Zhong Qianqian Lin Chuluo Yang Shaolong Gong 

作者机构：Department of ChemistryHubei Key Laboratory on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhanChina Key Lab of Artificial Micro-and Nano-Structures of Ministry of Education of ChinaSchool of Physics and TechnologyWuhan UniversityWuhanChina Shenzhen Key Laboratory of New Display and Storage MaterialsCollege of Materials Science and EngineeringShenzhen UniversityShenzhenChina 

出 版 物：《Aggregate》 (聚集体（英文）)

年 卷 期：2024年第5卷第3期

页      面：232-238页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：National Natural Science Foundation of China,Grant/Award Number:52022071 Shenzhen Science and Technology Program,Grant/Award Number:ZDSYS20210623091813040 

主　　题：alkoxy chain engineering organic scintillators radioluminescence room-temperature phosphorescence thermally activated delayedfluorescence X-ray imaging 

摘      要：Organic scintillators have recently gained considerable attentions in X-ray detection for their potential applications in biomedical radiograph and security ***,the weak X-ray absorption and/or inefficient exciton utilization have limited the development and commercialization of organic ***,high-performance X-ray organic scintillators are scarce and organic scintillators with dual triplet-harvesting channels have not been explored ***,we develop several proof-of-concept sulfone-based organic molecules,C1–C7,using different alkoxy chains to manipulate molecular packing *** materials exhibit dual triplet-harvesting channels of thermally activated delayedfluorescence(TADF)and room-temperature phosphorescence(RTP)in aggregated ***,these molecules display distinct radioluminescence under the X-ray *** them,C6 behaves the highest light yield of 16,558 photons ***,clear X-ray images are demonstrated in both aggregated state and single-molecule *** spatial resolutions of 15.0 and 10.6 line pairs per millimeter(lp mm-1)are achieved for rigid andflexible scintillator screens,exceeding most reported organic and conventional inorganic *** results highlight the great potential of organic molecules with TADF and RTP nature for efficient X-ray scintillation and imaging.