Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, USA.
Org Lett. 2010 Dec 3;12(23):5534-7. doi: 10.1021/ol102444j. Epub 2010 Nov 5.
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.
我们研究了当在双极主体的分子设计中引入吡啶部分与苯基部分时的影响。这些基于吡啶的有机发光二极管 (OLED) 主体材料是由商业上可获得的起始原料通过三到五个步骤合成的。这些非对映异构体主体具有相似的 HOMO/LUMO 能量；然而，使用上述主体材料制备的 OLED 的数据表明，主体的微小结构修饰会导致其载流子输运特性发生显著变化。
