Synthesis and Application of Pyridine-Based Ambipolar Hosts: Control of Charge Balance in Organic Light-Emitting Devices by Chemical Structure Modification
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- 作者：Phillip K. Koech ; Evgueni Polikarpov ; James E. Rainbolt ; Lelia Cosimbescu ; James S. Swensen ; Amber L. Von Ruden ; Asanga B. Padmaperuma
- 刊名：Organic Letters
- 出版年：2010
- 出版时间：December 3, 2010
- 年：2010
- 卷：12
- 期：23
- 页码：5534-5537
- 全文大小：167K
- 年卷期：v.12,no.23(December 3, 2010)
- ISSN：1523-7052
文摘
We studied the influence of a pyridine moiety versus a phenyl moiety when introduced in the molecular design of an ambipolar host. These pyridine-based host materials for organic light-emitting diodes (OLEDs) were synthesized in three to five steps from commercially available starting materials. The isomeric hosts have similar HOMO/LUMO energies; however, data from OLEDs fabricated using the above host materials demonstrate that small structural modification of the host results in significant changes in its carrier-transporting characteristics.