Reduction of the singlet–triplet energy gap of a thermally activated delayed fluorescence emitter by molecular interaction between the host and the emitter?
Journal of Materials Chemistry C Pub Date: 2016-10-06 DOI: 10.1039/C6TC03155B
Abstract
We reported the comparative effect of 1,3-bis(9H-carbazol-9-yl) benzene (mCP) and 1,3,5-tris(N-phenylbenzimidazole-2-yl)benzene (TPBI) hosts on the PL characteristics of 2-phenyl-4′-carbazole-9H-thioxanthen-9-one-10,10-dioxide (TXO-PhCz). Strong interaction between TXO-PhCz and TPBI can be observed, leading to the lower singlet–triplet energy gap of 8.8 meV and non-monotonic increase of ΦTotle, ΦD, and ΦP with temperature. OLEDs based on TXO-PhCz:TPBI films afford a maximum current efficiency of 71.9 cd A?1, a maximum power efficiency of 45.2 lm W?1, and a maximum EQE of 23.2%.
Recommended Literature
- [1] Evolution of calcium phosphate precipitation in hanging drop vapor diffusion by in situRaman microspectroscopy Gloria Belén Ramírez-Rodríguez,José Manuel Delgado-López,Jaime Gómez-MoralesCrystEngComm, 2013,15, 2206-2212 10.1039/C2CE26556G
- [2] Distribution pattern and allocation of defects in hydrogenated ZnO thin films? Vitaly Gurylev,Chung-Yi Su,Tsong-Pyng PerngPhys. Chem. Chem. Phys., 2016,18, 16033-16038 10.1039/C6CP01768A
- [3] Excitable dynamics in the bromate–sulfite–ferrocyanide reaction J. Zagora,M. Vosla?,L. Schreiberová,I. SchreiberPhys. Chem. Chem. Phys., 2002,4, 1284-1291 10.1039/B110048C
- [4] Enantiomeric helical TiO2 nanofibers modulate different peptide assemblies and subsequent cellular behaviors? Xu Jie,Deng Xu,Weili WeiRSC Adv., 2019,9, 29149-29153 10.1039/C9RA04660G
- [5] Exceptionally high temperature spin crossover in amide-functionalised 2,6-bis(pyrazol-1-yl)pyridine iron(ii) complex revealed by variable temperature Raman spectroscopy and single crystal X-ray diffraction? Max Attwood,Hiroki Akutsu,Lee Martin,Toby J. Blundell,Pierre Le Maguere,Scott S. TurnerDalton Trans., 2021,50, 11843-11851 10.1039/D1DT01743H
- [6] Excited state potential energy surfaces and their interactions in FeIVO active sites Shaun D. Wong,Edward I. SolomonDalton Trans., 2014,43, 17567-17577 10.1039/C4DT01366B
- [7] Fe3O4/FeS2 heterostructures enable efficient oxygen evolution reaction? Xingqun Zheng,Lele Song,Xin Feng,Li Li,Zidong WeiJ. Mater. Chem. A, 2020,8, 14145-14151 10.1039/C9TA13775K
- [8] Excited state dynamics of symmetric and asymmetric Cr3(dpa)4Cl2 measured using femtosecond transient absorption spectroscopy? Chao-Han Cheng,Wen-Zhen Wang,Shie-Ming Peng,I-Chia ChenPhys. Chem. Chem. Phys., 2017,19, 25471-25477 10.1039/C7CP03968A
- [9] Distribution and ecological risk assessment of typical antibiotics in the surface waters of seven major rivers, China? Environ. Sci.: Processes Impacts, 2021,23, 1088-1100 10.1039/D1EM00079A
- [10] Evolved polymerases facilitate selection of fully 2′-OMe-modified aptamers? Zhixia Liu,Tingjian Chen,Floyd E. RomesbergChem. Sci., 2017,8, 8179-8182 10.1039/C7SC03747C
Journal Name：Journal of Materials Chemistry C
research_products
-
CAS no.: 89640-58-4
![1,2,3,4,5,6-Hexahydro-[2,3]bipyridinyl-6-ol](https://ossimg.kuujia.com/scimg/1271000/1270529-38-8x500.png)
![N-(3-cyanothiolan-3-yl)-2-[(2,2,2-trifluoroethyl)sulfanyl]pyridine-4-carboxamide](https://ossimg.kuujia.com/scimg/1444500/1444113-98-7x500.png)
![2,2-Difluoro-3-[methyl(2-methylbutyl)amino]propanoic acid](https://ossimg.kuujia.com/scimg/2138500/2138166-62-6x500.png)
![2-(1H-indol-3-yl)-N-{[6-(thiophen-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl]methyl}acetamide](https://ossimg.kuujia.com/scimg/2034500/2034271-14-0x500.png)