Thermally activated delayed fluorescence with a narrow emission spectrum and organic room temperature phosphorescence by controlling spin-orbit coupling and phosphorescence lifetime of metal-free organic molecules

被引：66
|
作者：
Pander, Piotr [1 ]
Swist, Agnieszka [2 ]
Motyka, Radoslaw [3 ]
Soloducho, Jadwiga [2 ]
Dias, Fernando B. [1 ]
Data, Przemyslaw [1 ,3 ,4 ]
机构：
[1] Univ Durham, Dept Phys, South Rd, Durham DH1 3LE, England
[2] Wroclaw Univ Technol, Fac Chem, Wybrzeze Wyspianskiego 27, PL-50370 Wroclaw, Poland
[3] Silesian Tech Univ, Fac Chem, Ks M Strzody 9, PL-44100 Gliwice, Poland
[4] Polish Acad Sci, Ctr Polymer & Carbon Mat, M Curie Sklodowskiej 34, PL-41819 Zabrze, Poland
来源：
JOURNAL OF MATERIALS CHEMISTRY C | 2018年 / 6卷 / 20期
基金：
欧盟地平线“2020”;
关键词：
LIGHT-EMITTING-DIODES; EFFICIENCY; COMPLEXES; MECHANISM; ACRIDONE; OLEDS; TADF; LUMINESCENCE; DESIGN; GREEN;
D O I：
10.1039/c8tc00175h
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This work presents a study of two organic molecules with a very similar, large singlet-triplet energy gap, one of which is a thermally activated delayed fluorescence (TADF) emitter and the other is a room temperature phosphorescence (RTP) emitter. By investigating their photophysical properties we are able to explain their distinct behavior. The molecules are studied in non-polar polymers and OLED hosts. Furthermore, this work presents a CT TADF emitter that shows a narrow and resolved electroluminescence spectrum (FWHM = 53 nm). The study shows an efficient RTP emitter based on a D-D-D structure and also the first acridone-based TADF emitter with a D-A-D structure.
引用
收藏
页码：5434 / 5443
页数：10
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