Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
Chem Asian J. 2010 Jun 1;5(6):1376-81. doi: 10.1002/asia.201000112.
A diversity-oriented synthetic strategy allowed us to design a series of conjugated molecules containing multiple benzosilole units that can be utilized as efficient hole-blocking materials for phosphorescent organic light emitting diodes (OLEDs). Some of these compounds showed a performance surpassing that of the current standard, bathocuproine. The new compounds were easily synthesized in a modular fashion from a previously reported 3-stannyl benzosilole building unit. Studies on the properties of these compounds in solution and in the solid state indicate that they possess high electron affinity, high ionization potential, and form stable amorphous films that show high electron-drift mobility. The correlation between their molecular properties and the efficiency of the OLED device performance is also investigated.
一种面向多样性的合成策略使我们能够设计出一系列含有多个苯并硅氧烷单元的共轭分子，这些分子可用作磷光有机发光二极管（OLED）的高效空穴阻挡材料。其中一些化合物的性能超过了目前的标准材料——铜酞菁。这些新化合物可以通过之前报道的 3-锡基苯并硅氧烷构筑单元以模块化的方式方便地合成。这些化合物在溶液和固态中的性质研究表明，它们具有高电子亲和力、高电离势，并形成稳定的非晶薄膜，具有高电子迁移率。还研究了它们的分子性质与 OLED 器件性能效率之间的关系。
