An object is to provide a novel substance which exhibits blue light emission with excellent color purity, and to provide a light emitting element and a light emitting device using the novel substance. A stilbene derivative represented by the general formula (G1) is provided. Note that in the general formula (G1), each of A
1
and B
1
represents any one of structures represented by the following general formulae (G1-1) to (G1-4). In addition, in each of the general formulae (G1-1) to (G1-4), each of R
1
to R
24
represents any one of hydrogen and an alkyl group having 1 to 4 carbon atoms. Such a stilbene derivative can exhibit blue light emission with excellent color purity.
提供一种新颖物质,该物质具有优异的色纯度并显示蓝光发射的目的,以及提供使用该新颖物质的发光元件和发光装置。提供了由一般式(G1)表示的一种
苯乙烯衍
生物。请注意,在一般式(G1)中,A1和B1中的每一个代表以下一般式(G1-1)至(G1-4)所代表的结构之一。此外,在一般式(G1-1)至(G1-4)中的每一个,R1至R24中的每一个代表氢原子和具有1至4个碳原子的烷基基团之一。这样的
苯乙烯衍
生物可以显示出具有优异色纯度的蓝光发射。