Photo- and electroluminescent properties of cyano-substituted styryl derivatives and synthesis of CN–PPV model compounds containing an alkoxy spacer for OLEDs
作者:Hosuk Ryu、L.R. Subramanian、Michael Hanack
DOI:10.1016/j.tet.2006.04.051
日期:2006.6
substituted acetonitrile derivatives 11,16,17. The influence of the different substituents on the optical properties of the resulting α-cyanostyryl compounds 18–20 was investigated. Another series of dimeric cyano-substituted styryl compounds 26–28 were prepared, in which a flexible, nonconjugated spacer is present between the two cyanostyryl moieties. The spacer isolates the π-conjugated portions of dimeric
该系列的氰基取代的模型化合物18 - 20为有机发光二极管(OLED)是通过二醛之间的Knoevenagel缩合反应制备3,6,9和不同取代的乙腈衍生物11,16,17。对所得到的α氰基苯乙烯基的光学性质的不同取代基的影响,化合物18 - 20进行了研究。另一系列的二聚氰基取代苯乙烯基化合物26 – 28制备了其中两个氰基苯乙烯基部分之间存在挠性,非共轭的间隔基的化合物。间隔件隔离的二聚化合物的π共轭部分26 - 28,改善了它们在普通有机溶剂中的溶解度,并降低了它们的结晶倾向。这些特征有利于在OLED器件中生产有效的发光膜。