Abstract
New well-defined structurally different 9,10-bis(9-hexyl-6-((E)-styryl)-9H-carbazol-3-yl)anthracene derivatives, shortly named “6a, 6b and 6c”, with side groups having electron donating and withdrawing were systematically synthesized using Suzuki cross-coupling and Vilsmeier-Haack reactions. The impact of electron donating and withdrawing groups and their influence on the molecules photophysical properties has been investigated. The materials showed sky-blue emissions with high internal quantum efficiencies. Based on photophysical investigations the most promising molecule (6a) has been selected and high efficiency OLEDs with external quantum efficiency at very low current efficiency (∼1 mA/cm2) reaching 5% (doped) were obtained.
Original language | English |
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Pages (from-to) | 319-329 |
Number of pages | 11 |
Journal | Organic Electronics |
Volume | 59 |
DOIs | |
Publication status | Published - Aug 2018 |
Bibliographical note
Publisher Copyright:© 2018 Elsevier B.V.
Funding
The authors would like thank the Turkish State Planning Association for financial support.
Funders | Funder number |
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Turkish State Planning Association |
Keywords
- Anthracene
- Carbazole
- Delayed fluorescence
- Electroluminescence
- Geminate electron-hole pair