Macrocyclic and acyclic bis(2,5-diphenyl-1,3,4-oxadiazole)s with electron-transporting and hole-blocking ability in organic electroluminescent devices

被引：11
|
作者：
Ono, K [1 ]
Ezaka, S
Higashibata, A
Hosokawa, R
Ohkita, M
Saito, K
Suto, M
Tomura, M
Matsushita, Y
Naka, S
Okada, H
Onnagawa, H
机构：
[1] Nagoya Inst Technol, Dept Life & Mat Engn, Showa Ku, Nagoya, Aichi 4668555, Japan
[2] Dow Corning Asia Ltd, Chigusa Ku, Ichihara 2990108, Japan
[3] Inst Mol Sci, Okazaki, Aichi 4448585, Japan
[4] Toyama Univ, Fac Engn, Dept Elect & Elect Engn, Gofu Ku, Toyama 9308555, Japan
来源：
MACROMOLECULAR CHEMISTRY AND PHYSICS | 2005年 / 206卷 / 15期
关键词：
charge transport; electroluminescence; macrocycles; 1,3,4-oxadiazole; structure-property relations;
D O I：
10.1002/macp.200500122
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Two types of bis(2,5-diphenyl-1,3,4-oxadiazole)s, macrocyclic and acyclic, were prepared and evaluated as electron-transporting and hole-blocking materials in phosphorescent EL devices. Maximum efficiencies of eta(ext)=10.4% at J=0.11 mA.cm(-1) for the macrocycle and eta(ext)=14.1% at J=3.01 mA.cm(-1) for the acycle were observed. X-ray crystallographic analysis and DSC measurements revealed a strong intermolecular interaction between the macrocylces and weaker intermolecular interactions between the acycles. The EL characteristics depend on the intermolecular interactions.
引用
收藏
页码：1576 / 1582
页数：7
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