journal article·2015-11-11

Phosphorescent Iridium(III) Complexes Bearing Fluorinated Aromatic Sulfonyl Group with Nearly Unity Phosphorescent Quantum Yields and Outstanding Electroluminescent Properties

Jiang Zhao, Yue Yu, Xiaolong Yang, Xiaogang Yan, Huiming Zhang, Xianbin Xu, Guijiang Zhou, Zhaoxin Wu, Yixia Ren, Wai-Yeung Wong

Publisher page

Abstract

A series of heteroleptic functional Ir(III) complexes bearing different fluorinated aromatic sulfonyl groups has been synthesized. Their photophysical features, electrochemical behaviors, and electroluminescent (EL) properties have been characterized in detail. These complexes emit intense yellow phosphorescence with exceptionally high quantum yields (ΦP > 0.9) at room temperature, and the emission maxima of these complexes can be finely tuned depending upon the number of the fluorine substituents on the pendant phenyl ring of the sulfonyl group. Furthermore, the electrochemical properties and electron injection/transporting (EI/ET) abilities of these Ir(III) phosphors can also be effectively tuned by the fluorinated aromatic sulfonyl group to furnish some desired characters for enhancing the EL performance. Hence, the maximum luminance efficiency (ηL) of 81.2 cd A(-1), corresponding to power efficiency (ηP) of 64.5 lm W(-1) and external quantum efficiency (ηext) of 19.3%, has been achieved, indicating the great potential of these novel phosphors in the field of organic light-emitting diodes (OLEDs). Furthermore, a clear picture has been drawn for the relationship between their optoelectronic properties and chemical structures. These results should provide important information for developing highly efficient phosphors.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Organic Light-Emitting Diodes Research · Luminescence and Fluorescent Materials · Organic Electronics and Photovoltaics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Mechanical Behavior of Materials, Institute of Chemistry for New Energy Material, Department of Chemistry, Faculty of Science, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China

Key Laboratory of Photonics Technology for Information, School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an, 710049, People’s Republic of China

Institute of Molecular Functional Materials, Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Hong Kong, People’s Republic of China

HKBU Institute of Research and Continuing Education, Shenzhen Virtual University Park, Shenzhen, 518057, People’s Republic of China

Funding

University Grants Committee · Ministry of Science and Technology of the People's Republic of China · Shaanxi Province · Hong Kong Baptist University · National Natural Science Foundation of China · China Postdoctoral Science Foundation · Ministry of Education of the People's Republic of China · Program for New Century Excellent Talents in University · Xi'an Jiaotong University · Research Grants Council, University Grants Committee, Hong Kong · Science Technology and Innovation Committee of Shenzhen Municipality

References (35)

Show source-provided references
1. 10.1002/adfm.20070071910.1002/adfm.200700719 ↗
2. 10.1021/cm300674810.1021/cm3006748 ↗
3. 10.1016/j.orgel.2011.04.01510.1016/j.orgel.2011.04.015 ↗
4. 10.1016/j.orgel.2014.03.03510.1016/j.orgel.2014.03.035 ↗
5. 10.1039/b910292b10.1039/b910292b ↗
6. 10.1002/cphc.20110025910.1002/cphc.201100259 ↗
7. 10.1016/S0379-6779(97)04166-010.1016/S0379-6779(97)04166-0 ↗
8. 10.1038/2595410.1038/25954 ↗
9. 10.1002/adma.20100312810.1002/adma.201003128 ↗
10. 10.1595/147106713X65901910.1595/147106713X659019 ↗
11. 10.1039/B812281D10.1039/B812281D ↗
12. 10.1002/chem.20060127210.1002/chem.200601272 ↗
13. 10.1039/c0cs00160k10.1039/c0cs00160k ↗
14. 10.1002/asia.20080007410.1002/asia.200800074 ↗
15. 10.1039/c0jm01159b10.1039/c0jm01159b ↗
16. 10.1021/ic502122t10.1021/ic502122t ↗
17. 10.1039/c3cc47875k10.1039/c3cc47875k ↗
18. 10.1002/asia.20140305710.1002/asia.201403057 ↗
19. 10.1063/1.11278410.1063/1.112784 ↗
20. Sheldrick, G. M.SHELXL-97, Program for Crystal Structure Refinement;University of Göttingen:Göttingen, Germany, 1997.
21. Sheldrick, G. M.SADABS;University of Göttingen:Göttingen, Germany, 1996.
22. 10.1063/1.44880010.1063/1.448800 ↗
23. 10.1063/1.44897510.1063/1.448975 ↗
24. Frisch M. J. · 2009
25. 10.1021/ic025550810.1021/ic0255508 ↗
26. 10.1002/adfm.20060066310.1002/adfm.200600663 ↗
27. 10.1021/ja003693s10.1021/ja003693s ↗
28. 10.1039/c3tc30352g10.1039/c3tc30352g ↗
29. 10.1063/1.353284410.1063/1.3532844 ↗
30. 10.1063/1.477318810.1063/1.4773188 ↗
31. 10.1557/S088376940003361310.1557/S0883769400033613 ↗
32. 10.1016/j.jfluchem.2009.04.00910.1016/j.jfluchem.2009.04.009 ↗
33. 10.1021/cm030410x10.1021/cm030410x ↗
34. 10.1039/c0jm02143a10.1039/c0jm02143a ↗
35. 10.1021/am400672y10.1021/am400672y ↗