Lei Xu, Yue Yu, Yuyu Pan, Bohan Wang, Lei Ying, Yuguang Ma
： The blue OLED material plays a vital role in the field of electroluminescence. Based on high - energy ex⁃ cited state transition ， the “ hot exciton ” materials show the potential of excellent blue light emitting. We designed and synthesized a novel D - π - A structure molecule TACN using anthracene as the core building unit ， triphenylben⁃ zene as the weak donor and phenylcyanogen as the acceptor by adjusting the ability of pushing and pulling electrons. Distorted triphenylbenzene provides a highly distorted molecular conformation ， which effectively attenuates the quenching effect in the aggregated state. Therefore ， TACN exhibits a high fluorescence quantum yield （ 47% in the aggregated state ） . The experimental results and theoretical analysis show that TACN has the “ hot exciton ” character⁃ istic ， and its large T 2 - T 1 gap （ 1. 45 eV ） effectively hinders the internal conversion （ IC ） process from T 2 to T 1 ， while its small T 2 - S 1 energy difference （ 0. 18 eV ， T 2 > S 1 ） facilitates the reverse intersystem crossing （ RISC ） process. Non - doped devices based on TACN exhibit dark blue emission （ λ max
蓝色OLED材料在电致发光领域起着至关重要的作用。基于高能被引态跃迁，“热激子”材料显示出优异的蓝光发射潜力。以蒽为核心构建单元，三苯基苯乙烯为弱给体，苯基氰为受体，通过调节电子的推拉能力，设计合成了新型的D - π - a结构分子TACN。扭曲的三苯基苯提供了一个高度扭曲的分子构象，有效地减弱了聚集态的猝灭效应。因此，TACN具有较高的荧光量子产率(聚集态为47%)。实验结果和理论分析表明，TACN具有“热激子”特性，且具有较大的t2 - t1间隙(1。45 eV)有效地阻碍了从t2到t1的内部转换(IC)过程，而其较小的t2 - s1能量差(0。18 eV, T 2 > S 1)便于反向系统间交叉(RISC)过程。基于TACN的非掺杂器件呈现出深蓝色发射(λ max)
{"title":"High-performance Deep Blue “Hot Exciton” Materials Based on Anthracene","authors":"Lei Xu, Yue Yu, Yuyu Pan, Bohan Wang, Lei Ying, Yuguang Ma","doi":"10.37188/cjl.20230137","DOIUrl":"https://doi.org/10.37188/cjl.20230137","url":null,"abstract":"： The blue OLED material plays a vital role in the field of electroluminescence. Based on high - energy ex⁃ cited state transition ， the “ hot exciton ” materials show the potential of excellent blue light emitting. We designed and synthesized a novel D - π - A structure molecule TACN using anthracene as the core building unit ， triphenylben⁃ zene as the weak donor and phenylcyanogen as the acceptor by adjusting the ability of pushing and pulling electrons. Distorted triphenylbenzene provides a highly distorted molecular conformation ， which effectively attenuates the quenching effect in the aggregated state. Therefore ， TACN exhibits a high fluorescence quantum yield （ 47% in the aggregated state ） . The experimental results and theoretical analysis show that TACN has the “ hot exciton ” character⁃ istic ， and its large T 2 - T 1 gap （ 1. 45 eV ） effectively hinders the internal conversion （ IC ） process from T 2 to T 1 ， while its small T 2 - S 1 energy difference （ 0. 18 eV ， T 2 > S 1 ） facilitates the reverse intersystem crossing （ RISC ） process. Non - doped devices based on TACN exhibit dark blue emission （ λ max","PeriodicalId":10121,"journal":{"name":"Chinese Journal of Luminescence","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69948395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Meng Zhang, Guiji Wang, Yangyang Liang, C. Su, W. Jia, Yanru Yin, Tao Li
{"title":"Continuous-wave Laser Properties of Er∶Lu2O3 Crystal Grown by EFG Method","authors":"Meng Zhang, Guiji Wang, Yangyang Liang, C. Su, W. Jia, Yanru Yin, Tao Li","doi":"10.37188/cjl.20220324","DOIUrl":"https://doi.org/10.37188/cjl.20220324","url":null,"abstract":"","PeriodicalId":10121,"journal":{"name":"Chinese Journal of Luminescence","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69940218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shipan Wang, Yibin Jiang, Kai Zhang, T. Dong, Dong Fu
{"title":"Progress in Inkjet Printing Organic Electroluminescent Display Materials and Devices","authors":"Shipan Wang, Yibin Jiang, Kai Zhang, T. Dong, Dong Fu","doi":"10.37188/cjl.20220309","DOIUrl":"https://doi.org/10.37188/cjl.20220309","url":null,"abstract":"","PeriodicalId":10121,"journal":{"name":"Chinese Journal of Luminescence","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69938841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jianhua Dong, Lu Lu, Xudong Jin, Qiqing Lu, Yanqin Miao, Min Zhao
{"title":"Green Polycrystalline Perovskite Films with Glucose as Passivator for Light-emitting Diodes","authors":"Jianhua Dong, Lu Lu, Xudong Jin, Qiqing Lu, Yanqin Miao, Min Zhao","doi":"10.37188/cjl.20220297","DOIUrl":"https://doi.org/10.37188/cjl.20220297","url":null,"abstract":"","PeriodicalId":10121,"journal":{"name":"Chinese Journal of Luminescence","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69938674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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