抑制激子猝灭的多共振发射体的施受体立体屏蔽

IF 4.2 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments Pub Date : 2025-09-16 DOI:10.1016/j.dyepig.2025.113247

Jia-Ming Jin , Chengxiang Shi , Xiao-Long Liu , Longjiang Xing , Ji-Hua Tan , Sheng Hu , Xiaofeng Tan , Wen-Cheng Chen , Yanping Huo

{"title":"抑制激子猝灭的多共振发射体的施受体立体屏蔽","authors":"Jia-Ming Jin , Chengxiang Shi , Xiao-Long Liu , Longjiang Xing , Ji-Hua Tan , Sheng Hu , Xiaofeng Tan , Wen-Cheng Chen , Yanping Huo","doi":"10.1016/j.dyepig.2025.113247","DOIUrl":null,"url":null,"abstract":"<div><div>We report a multi-resonance thermally activated delayed fluorescence emitter equipped with a donor–acceptor configured, sterically wrapped subunit. In the present work, TCZA-BNCz was successfully synthesized by introducing the Donor-Acceptor Steric Shielding moiety TCZA into the MR core BNCz. Due to the long-range charge transport characteristic of the D-A type TCZA group, the reverse intersystem crossing (RISC) is significantly enhanced. Moreover, the steric shielding effect leads to an inhibition of aggregation-caused quenching (ACQ). This enables the doped film to maintain a photoluminescence quantum yield (PLQY) of over 90 % even at a high doping concentration (15 wt.%), while achieving a <em>k</em><sub>RISC</sub> of 1.74 × 10<sup>5</sup> s<sup>−1</sup>. The strategy effectively inhibiting aggregation-caused quenching and facilitating efficient RISC process. The OLED devices achieve high external quantum efficiency of 27.9 % at 15 wt.% doping concentration.</div></div>","PeriodicalId":302,"journal":{"name":"Dyes and Pigments","volume":"245 ","pages":"Article 113247"},"PeriodicalIF":4.2000,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Donor-acceptor steric shielding of multi-resonance emitters for suppressed exciton quenching\",\"authors\":\"Jia-Ming Jin , Chengxiang Shi , Xiao-Long Liu , Longjiang Xing , Ji-Hua Tan , Sheng Hu , Xiaofeng Tan , Wen-Cheng Chen , Yanping Huo\",\"doi\":\"10.1016/j.dyepig.2025.113247\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>We report a multi-resonance thermally activated delayed fluorescence emitter equipped with a donor–acceptor configured, sterically wrapped subunit. In the present work, TCZA-BNCz was successfully synthesized by introducing the Donor-Acceptor Steric Shielding moiety TCZA into the MR core BNCz. Due to the long-range charge transport characteristic of the D-A type TCZA group, the reverse intersystem crossing (RISC) is significantly enhanced. Moreover, the steric shielding effect leads to an inhibition of aggregation-caused quenching (ACQ). This enables the doped film to maintain a photoluminescence quantum yield (PLQY) of over 90 % even at a high doping concentration (15 wt.%), while achieving a <em>k</em><sub>RISC</sub> of 1.74 × 10<sup>5</sup> s<sup>−1</sup>. The strategy effectively inhibiting aggregation-caused quenching and facilitating efficient RISC process. The OLED devices achieve high external quantum efficiency of 27.9 % at 15 wt.% doping concentration.</div></div>\",\"PeriodicalId\":302,\"journal\":{\"name\":\"Dyes and Pigments\",\"volume\":\"245 \",\"pages\":\"Article 113247\"},\"PeriodicalIF\":4.2000,\"publicationDate\":\"2025-09-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Dyes and Pigments\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0143720825006175\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Dyes and Pigments","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0143720825006175","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}

引用次数: 0

摘要

我们报道了一个多共振热激活延迟荧光发射器配备了供体-受体配置，立体包裹亚基。在本研究中，通过在MR核BNCz中引入供体-受体空间屏蔽基团TCZA，成功合成了TCZA-BNCz。由于D-A型TCZA基团的远距离电荷输运特性，逆向系统间交叉（RISC）显著增强。此外，空间屏蔽效应抑制了聚合猝灭（ACQ）。这使得掺杂薄膜即使在高掺杂浓度（15 wt.%）下也能保持90%以上的光致发光量子产率（PLQY），同时实现1.74 × 105 s−1的kRISC。该策略有效地抑制了聚集引起的淬火，促进了高效的RISC工艺。该OLED器件在掺杂浓度为15.wt .%时达到27.9%的高外量子效率。

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

Donor-acceptor steric shielding of multi-resonance emitters for suppressed exciton quenching

We report a multi-resonance thermally activated delayed fluorescence emitter equipped with a donor–acceptor configured, sterically wrapped subunit. In the present work, TCZA-BNCz was successfully synthesized by introducing the Donor-Acceptor Steric Shielding moiety TCZA into the MR core BNCz. Due to the long-range charge transport characteristic of the D-A type TCZA group, the reverse intersystem crossing (RISC) is significantly enhanced. Moreover, the steric shielding effect leads to an inhibition of aggregation-caused quenching (ACQ). This enables the doped film to maintain a photoluminescence quantum yield (PLQY) of over 90 % even at a high doping concentration (15 wt.%), while achieving a k_RISC of 1.74 × 10⁵ s⁻¹. The strategy effectively inhibiting aggregation-caused quenching and facilitating efficient RISC process. The OLED devices achieve high external quantum efficiency of 27.9 % at 15 wt.% doping concentration.

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

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.