Bipiridine derivative and organic electroluminescence element containing the same
申请人:Yamagata Promotional Organization for
Industrial Technology
公开号:EP2275409A1
公开(公告)日:2011-01-19
The present invention provides a new bipyridine derivative which is suitable for an electron transport material of an organic electronics element and which has bipyridyl central rings as a core, and further provides an organic electroluminescence element containing the derivative.
The bipyridine derivative is expressed by the following general formula.
(where A1, A2: represent an aromatic heterocyclic group (except for a carbazolyl group) and an aromatic hydrocarbon group and the aromatic heterocyclic group may be combined; a, b = 1 or 2; Ar1, Ar2: represent a divalent or trivalent aromatic hydrocarbon group which may be substituted by hydrogen atom, an alkyl group, a cycloalkyl group, or an alkoxy group; B1, B2: represent hydrogen atom, an alkyl group, a cycloalkyl group, an alkoxy group, an aromatic hydrocarbon group, or an aromatic heterocyclic group; and ring E1, ring E2: represent a pyridine ring, and may have hydrogen atom, an alkyl group, a cycloalkyl group, or an alkoxy group.), which is used as an electron transport material.
本发明提供了一种新的联吡啶衍生物,适用于有机电子元件的电子传输材料,并且具有联吡啶中心环作为核心,并进一步提供了含有该衍生物的有机电致发光元件。联吡啶衍生物由以下一般公式表示(其中A1、A2:代表芳香杂环基团(除了吲哚基团)和芳香烃基团,芳香杂环基团可以结合;a,b = 1或2;Ar1,Ar2:代表可由氢原子、烷基、环烷基或烷氧基取代的二价或三价芳香烃基团;B1,B2:代表氢原子、烷基、环烷基、烷氧基、芳香烃基团或芳香杂环基团;环E1,环E2:代表吡啶环,并且可以具有氢原子、烷基、环烷基或烷氧基)。该衍生物用作电子传输材料。