Asymmetrical Aryl Amine Derivative for Organic Electroluminescence Devices, Method for Preparing Same, Organic Thin Film for Organic Electroluminescence Devices and Organic Electroluminescence Device Using Same
申请人:Kim Sang Dong
公开号:US20120032152A1
公开(公告)日:2012-02-09
Provided are asymmetric arylamine derivatives for an organic electroluminescent element, represented by the formula (1), which is prepared by sequentially inducing a secondary amine and a tertiary amine to an aryl compound Ar core so that they do not include a symmetrical axis and a symmetrical surface in a molecule, a manufacturing method of the same, an organic thin layer material including the asymmetric arylamine derivatives, and an organic electroluminescent element employing the same:
wherein Ar represents a C
10
-C
20
divalent aryl group, Ar
1
is a divalent C
6
-C
30
aryl group, and Ar
2
to Ar
5
each independently represents a divalent C
6
-C
30
aryl group, at least one of Ar
2
to Ar
5
having a different structure when the secondary amine and the tertiary amine in Ar are substituted at symmetrical positions, and Ar
2
to Ar
5
having the same structure or different structures when the secondary amine and the tertiary amine in Ar are substituted at asymmetrical positions. The asymmetric arylamine derivative can be used in forming an organic thin layer for an organic electroluminescent element. When the organic electroluminescent element is formed using a dopant as an emitting material, the asymmetric arylamine derivative exhibits superb emission efficiency and an excellent lifetime characteristic in a blue wavelength region.
本发明提供了一种不包括对称轴和对称面的分子结构的非对称芳基胺衍生物,用于有机电致发光元件,其公式表示为(1),通过将二级胺和三级胺顺序引入到芳基化合物Ar核中制备而成,该化合物包括一个制备方法,包括非对称芳基胺衍生物的有机薄层材料以及使用该材料的有机电致发光元件。其中,Ar表示C10-C20二价芳基基团,Ar1表示C6-C30二价芳基基团,Ar2到Ar5各自独立表示C6-C30二价芳基基团,当二级胺和三级胺在Ar中被置换在对称位置时,Ar2到Ar5中至少一个具有不同的结构,当二级胺和三级胺在Ar中被置换在非对称位置时,Ar2到Ar5具有相同的结构或不同的结构。该非对称芳基胺衍生物可用于形成有机电致发光元件的有机薄层。当使用掺杂剂作为发射材料制备有机电致发光元件时,该非对称芳基胺衍生物在蓝色波长区域表现出卓越的发射效率和优异的寿命特性。