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

页码：1576 / 1582

页数：7

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