利用共轴杂化局部和电荷转移激发态实现高效电荧光

IF 7.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chemical Science Pub Date : 2025-10-10 DOI:10.1039/d5sc06557g

Kuo Yu, Yingbo Lv, Yilong Li, Zirui Wang, Shi-Tong Zhang, Jinbei Wei, Shanfeng Xue, Chenguang Wang, Bing Yang

{"title":"利用共轴杂化局部和电荷转移激发态实现高效电荧光","authors":"Kuo Yu, Yingbo Lv, Yilong Li, Zirui Wang, Shi-Tong Zhang, Jinbei Wei, Shanfeng Xue, Chenguang Wang, Bing Yang","doi":"10.1039/d5sc06557g","DOIUrl":null,"url":null,"abstract":"In this work, we report two high-performance donor-acceptor (D-A) electro-fluorescent materials DPXZ-PI and DPXZ-PICN with novel co-axial hybrid local and charge-transfer (HLCT) excited state design method. Featuring the direct bonding of strong electron donor diphenoxazine (DPXZ) and weak electron acceptor phenanthroimidazole (PI), the co-axial HLCT state is initially constructed in DPXZ-PI with high photoluminescence quantum yield (PLQY) of 81.74% and a high maximum external quantum efficiency (EQE) of 14.83% in doped organic light-emitting diode (OLED), which is among the best results of the HLCT emitter-based OLEDs. Notably, the co-axial HLCT state is robust upon the introduction of strong electron acceptor cyano-benzene, which allows the increasing of electron mobility in OLED and high EQE of 11.60% in non-doped OLED of DPXZ-PICN. Overall, the co-axial HLCT realizes the increasing of PLQY with maintained exciton utilizing efficiency (EUE) in OLED, which is an effective method for highly-efficient electro-fluorescent materials and devices.Key words: OLED; HLCT; spin-statistics; excited state; EQE.","PeriodicalId":9909,"journal":{"name":"Chemical Science","volume":"110 1","pages":""},"PeriodicalIF":7.4000,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Realizing Highly Efficient Electro-Fluorescence with Co-axial Hybrid Local and Charge-transfer (HLCT) Excited State\",\"authors\":\"Kuo Yu, Yingbo Lv, Yilong Li, Zirui Wang, Shi-Tong Zhang, Jinbei Wei, Shanfeng Xue, Chenguang Wang, Bing Yang\",\"doi\":\"10.1039/d5sc06557g\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this work, we report two high-performance donor-acceptor (D-A) electro-fluorescent materials DPXZ-PI and DPXZ-PICN with novel co-axial hybrid local and charge-transfer (HLCT) excited state design method. Featuring the direct bonding of strong electron donor diphenoxazine (DPXZ) and weak electron acceptor phenanthroimidazole (PI), the co-axial HLCT state is initially constructed in DPXZ-PI with high photoluminescence quantum yield (PLQY) of 81.74% and a high maximum external quantum efficiency (EQE) of 14.83% in doped organic light-emitting diode (OLED), which is among the best results of the HLCT emitter-based OLEDs. Notably, the co-axial HLCT state is robust upon the introduction of strong electron acceptor cyano-benzene, which allows the increasing of electron mobility in OLED and high EQE of 11.60% in non-doped OLED of DPXZ-PICN. Overall, the co-axial HLCT realizes the increasing of PLQY with maintained exciton utilizing efficiency (EUE) in OLED, which is an effective method for highly-efficient electro-fluorescent materials and devices.Key words: OLED; HLCT; spin-statistics; excited state; EQE.\",\"PeriodicalId\":9909,\"journal\":{\"name\":\"Chemical Science\",\"volume\":\"110 1\",\"pages\":\"\"},\"PeriodicalIF\":7.4000,\"publicationDate\":\"2025-10-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical Science\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1039/d5sc06557g\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Science","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1039/d5sc06557g","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

摘要

在这项工作中，我们报道了两种高性能的供体-受体（D-A）电荧光材料DPXZ-PI和DPXZ-PICN，它们具有新颖的同轴混合局部和电荷转移（HLCT）激发态设计方法。利用强电子给体二苯恶嗪（DPXZ）和弱电子受体苯并咪唑（PI）的直接键合，在DPXZ-PI中初步构建了共轴HLCT态，在掺杂有机发光二极管（OLED）中，其光致发光量子产率（PLQY）高达81.74%，最大外量子效率（EQE）高达14.83%，是目前基于HLCT的发光二极管中表现最好的结果之一。值得注意的是，引入强电子受体氰苯后，共轴HLCT态具有鲁棒性，这使得OLED中的电子迁移率增加，并且在未掺杂的DPXZ-PICN OLED中EQE高达11.60%。综上所述，同轴HLCT在保持激子利用效率（EUE）的情况下实现了OLED中PLQY的增加，是一种高效电荧光材料和器件的有效方法。关键词：OLED；HLCT;spin-statistics;激发态;EQE。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Realizing Highly Efficient Electro-Fluorescence with Co-axial Hybrid Local and Charge-transfer (HLCT) Excited State

In this work, we report two high-performance donor-acceptor (D-A) electro-fluorescent materials DPXZ-PI and DPXZ-PICN with novel co-axial hybrid local and charge-transfer (HLCT) excited state design method. Featuring the direct bonding of strong electron donor diphenoxazine (DPXZ) and weak electron acceptor phenanthroimidazole (PI), the co-axial HLCT state is initially constructed in DPXZ-PI with high photoluminescence quantum yield (PLQY) of 81.74% and a high maximum external quantum efficiency (EQE) of 14.83% in doped organic light-emitting diode (OLED), which is among the best results of the HLCT emitter-based OLEDs. Notably, the co-axial HLCT state is robust upon the introduction of strong electron acceptor cyano-benzene, which allows the increasing of electron mobility in OLED and high EQE of 11.60% in non-doped OLED of DPXZ-PICN. Overall, the co-axial HLCT realizes the increasing of PLQY with maintained exciton utilizing efficiency (EUE) in OLED, which is an effective method for highly-efficient electro-fluorescent materials and devices.Key words: OLED; HLCT; spin-statistics; excited state; EQE.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Chemical Science CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

14.40

自引率

4.80%

发文量

1352

审稿时长

2.1 months

期刊介绍： Chemical Science is a journal that encompasses various disciplines within the chemical sciences. Its scope includes publishing ground-breaking research with significant implications for its respective field, as well as appealing to a wider audience in related areas. To be considered for publication, articles must showcase innovative and original advances in their field of study and be presented in a manner that is understandable to scientists from diverse backgrounds. However, the journal generally does not publish highly specialized research.