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US08481176B2 Oxadiazole derivative, and light-emitting element, light-emitting device, electronic device, and lighting device using oxadiazole derivative 有权
恶二唑衍生物，发光元件，发光元件，电子器件和使用恶二唑衍生物的照明器件

Oxadiazole derivative, and light-emitting element, light-emitting device, electronic device, and lighting device using oxadiazole derivative
Abstract:
An object is to provide a novel oxadiazole derivative represented by General Formula (G1) as a substance having a high electron-transport property. In the formula, Ar1 represents a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring. When Ar1 has a substituent, the substituent is an alkyl group having 1 to 4 carbon atoms or an aryl group having 6 to 10 carbon atoms in a ring. Ar2 represents a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring or a substituted or unsubstituted heteroaryl group having 4 to 9 carbon atoms. When Ar2 has a substituent, the substituent is an alkyl group having 1 to 4 carbon atoms or an aryl group having 6 to 10 carbon atoms in a ring. R1 and R2 independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
Abstract(Chinese):

目的是提供由通式（G1）表示的新型恶二唑衍生物作为电子传输性高的物质。 在该式中，Ar 1表示取代或未取代的环中具有6〜10个碳原子的芳基。 当Ar 1具有取代基时，取代基为环上具有1〜4个碳原子的烷基或碳原子数6〜10的芳基。 Ar2表示取代或未取代的环中具有6〜10个碳原子的芳基或具有4〜9个碳原子的取代或未取代的杂芳基。 当Ar 2具有取代基时，取代基为环上具有1〜4个碳原子的烷基或碳原子数6〜10的芳基。 R1和R2独立地表示氢原子或碳原子数1〜4的烷基。

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