To provide a light-emitting element having high luminous efficiency and to provide a light-emitting device and an electronic device which consumes low power and is driven at low voltage, a carbazole derivative represented by the general formula (1) is provided. In the formula, α1, α2, α3, and α4 each represent an arylene group having less than or equal to 13 carbon atoms; Ar1 and Ar2 each represent an aryl group having less than or equal to 13 carbon atoms; R1 represents any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group; and R2 represents any of an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted phenyl group, and a substituted or unsubstituted biphenyl group. In addition, l, m, and n are each independenly 0 or 1.
为提供具有高发光效率的发光元件,并提供一种低功耗、低电压驱动的发光装置和电子设备,提供了由通式(1)表示的
咔唑衍
生物。在该式中,α1、α2、α3 和 α4 分别表示具有小于或等于 13 个
碳原子的芳基基团;Ar1 和 Ar2 分别表示具有小于或等于 13 个
碳原子的芳基基团;R1 表示
氢原子、具有 1 到 6 个
碳原子的烷基基团、取代或未取代的
苯基团,以及取代或未取代的
联苯基团中的任意一种;R2 表示具有 1 到 6 个
碳原子的烷基基团、取代或未取代的
苯基团,以及取代或未取代的
联苯基团中的任意一种。此外,l、m 和 n 分别独立地为 0 或 1。