Tuning the Optoelectronic Properties of 4,4′-N,N′-Dicarbazole-biphenyl through Heteroatom Linkage: New Host Materials for Phosphorescent Organic Light-Emitting Diodes
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- 作者：Shenglan Zhang ; Runfeng Chen ; Jun Yin ; Feng Liu ; Hongji Jiang ; Naien Shi ; Zhongfu An ; Cong Ma ; Bin Liu ; Wei Huang
- 刊名：Organic Letters
- 出版年：2010
- 出版时间：August 6, 2010
- 年：2010
- 卷：12
- 期：15
- 页码：3438-3441
- 全文大小：212K
- 年卷期：v.12,no.15(August 6, 2010)
- ISSN：1523-7052
文摘
Five carbazole end-capped heterofluorenes (CzHFs) designed by structurally mimicking 4,4′-N,N′-dicarbazole-biphenyl (CBP) via connecting the biphenyl core of CBP with the linking atom of C, P, N, O, and S, respectively, were synthesized successfully, and their optoelectronic properties were investigated. The theoretical calculations and experimental results demonstrate that CzHFs are potential green, red, and even blue hosts for phosphorescent light-emitting diodes (PHOLEDs) with more desirable localization and energy levels of HOMO and LUMO and also higher triplet energy than CBP.