An object of the present invention to provide a novel stilbene derivative having a large energy gap. In addition, it is another object of the present invention to provide a novel light emitting element material having a large energy gap which is suitable for a host material in a light emitting layer. Further in addition, it is another object of the present invention to provide a novel light emitting element material having a large energy gap and an electron transporting property. The present invention provides a stilbene derivative represented by a following general formula (3) and a light emitting element material including the stilbene derivative represented thereby:
wherein, n is an integer of 0 or more and 2 or less and m is an integer of 1 or more and 2 or less.
本发明的一个目的是提供一种具有较大能隙的新型
蒽醌衍
生物。此外,本发明的另一个目的是提供一种适用于光发射层中宿主材料的具有较大能隙的新型发光元件材料。此外,本发明的另一个目的是提供一种具有较大能隙和电子传输性能的新型发光元件材料。本发明提供了一个由下述一般公式(3)表示的
蒽醌衍
生物和包括所述
蒽醌衍
生物的发光元件材料:其中,n是0或更多且2或更少的整数,m是1或更多且2或更少的整数。