申请人:Kwansei Gakuin Educational Foundation
公开号:US20180094000A1
公开(公告)日:2018-04-05
The objective of the invention is to provide a polycyclic aromatic compound in which solubility to a solvent, film formability, wet coatability, thermal stability, and in-plane orientation are improved. This objective is achieved by a light emission layer-forming composition comprising: as a first component, at least one type of dopant material selected from the group consisting of polycyclic aromatic compounds represented by general formula (A) and polycyclic aromatic oligomer compounds including a plurality of structures represented by general formula (A); as a second component, a specific low-molecular-weight host material; and, as a third component, at least one type of organic solvent. In formula (A), ring A, ring B, and ring C each independently represent an aryl ring or a hetero aryl ring, Y
1
is B, and X
1
and X
2
each independently represent O or N—R wherein at least one of X
1
and X
2
is N—R.
该发明的目的是提供一种多环芳香化合物,其溶解性、膜形成性、湿涂性、热稳定性和平面取向性得到改善。通过包括以下组分的发光层形成组合物实现这一目标:作为第一组分,至少一种从一般式(A)表示的多环芳香化合物和包括多个从一般式(A)表示的结构的多环芳香寡聚物化合物中选择的掺杂材料;作为第二组分,特定的低分子量载体材料;作为第三组分,至少一种有机溶剂。在式(A)中,环A、环B和环C分别独立表示芳基环或杂环芳基环,Y1是B,X1和X2分别独立表示O或N—R,其中X1和X2中至少一个是N—R。