Felix Majer, Lars Roß, A. Lennart Respondek, Christoph Bannwarth, Alexander J. C. Kuehne
{"title":"Hot Exciton versus Hot Exciplex TADF Mechanism – Effect of the Donor-Acceptor Functionalization Pattern on Anthracene-based Emitters","authors":"Felix Majer, Lars Roß, A. Lennart Respondek, Christoph Bannwarth, Alexander J. C. Kuehne","doi":"10.1002/cptc.202400141","DOIUrl":null,"url":null,"abstract":"<p>Hot exciton emitters based on 9,10-substituted anthracenes are a well-investigated class of molecules featuring thermally activated delayed fluorescence (TADF). TADF converts triplet excitons into singlet excitons and improves the internal quantum efficiency of electroluminescent devices to performance beyond the limit of spin-statistics of conventional emitters. In this paper, we compare different 1,8-functionalized donor/acceptor-substituted anthracenes and compare these to established 9,10-functionalized hot exciton emitters. Interestingly, our new 1,8-substituted anthracenes make use of a beneficial hot exciplex pathway, resulting in improved emission characteristics and higher photoluminescence quantum yield.</p>","PeriodicalId":10108,"journal":{"name":"ChemPhotoChem","volume":"8 11","pages":""},"PeriodicalIF":3.0000,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cptc.202400141","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ChemPhotoChem","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/cptc.202400141","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Hot exciton emitters based on 9,10-substituted anthracenes are a well-investigated class of molecules featuring thermally activated delayed fluorescence (TADF). TADF converts triplet excitons into singlet excitons and improves the internal quantum efficiency of electroluminescent devices to performance beyond the limit of spin-statistics of conventional emitters. In this paper, we compare different 1,8-functionalized donor/acceptor-substituted anthracenes and compare these to established 9,10-functionalized hot exciton emitters. Interestingly, our new 1,8-substituted anthracenes make use of a beneficial hot exciplex pathway, resulting in improved emission characteristics and higher photoluminescence quantum yield.
ChemPhotoChemChemistry-Physical and Theoretical Chemistry
CiteScore
5.80
自引率
5.40%
发文量
165
期刊介绍:
Light plays a crucial role in natural processes and leads to exciting phenomena in molecules and materials. ChemPhotoChem welcomes exceptional international research in the entire scope of pure and applied photochemistry, photobiology, and photophysics. Our thorough editorial practices aid us in publishing authoritative research fast. We support the photochemistry community to be a leading light in science.
We understand the huge pressures the scientific community is facing every day and we want to support you. Chemistry Europe is an association of 16 chemical societies from 15 European countries. Run by chemists, for chemists—we evaluate, publish, disseminate, and amplify the scientific excellence of chemistry researchers from around the globe.