申请人:Nishimura Kazuki
公开号:US20150194621A1
公开(公告)日:2015-07-09
An organic electroluminescence device utilizes a novel combination of one or more biscarbazole derivative compounds as the phosphorescent host material in combination with an organometallic phosphorescent material as a dopant in the light emitting region of the device, where the biscarbazole derivative compounds are represented by a formula (1A) or (2A) below: (1A), (2A) where A
1
represents a substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; A
2
represents a substituted or unsubstituted aromatic hydrocarbon group having 6 to 30 ring carbon atoms, or substituted or unsubstituted nitrogen-containing heterocyclic group having 1 to 30 ring carbon atoms; X
i
and X
2
each are a linking group; Y
1
to Y
4
each represent a substituent; p and q represent an integer of 1 to 4; and r and s represent an integer of 1 to 3; and the organometallic phosphorescent material is a compound having a substituted chemical structure represented by the formula (4A): where each R is independently selected from the group consisting of H, alkyl, alkenyl, alkynyl, alkylaryl, CN, CF
3
, C
n
F
2n+1
, trifluorovinyl, CO
2
R, C(O)R, NR
2
, NO
2
, OR, halo, aryl, heteroaryl, substituted aryl, substituted heteroaryl or a heterocyclic group; M is a platinum group metal; Ar′, Ar″, Ar′″ and Ar″″ each independently represent a substituted or unsubstituted aryl or heteroaryl substituent on the phenylpyridine ligand; a is 0 or 1; b is 0 or 1; c is 0 or 1; d is 0 or 1; m is 1 or 2; n is 1 or 2; m+n is the maximum number of ligands that can be coordinated to M, and wherein at least one of a, b, c, and d is 1 and when at least one of a and b is 1 and at least one of b and c is 1, at least one of Ar′ and Ar″ is different from at least one of Ar′″ and Ar″″.
一种有机电致发光器件,利用一种或多种双咔唑衍生物化合物与一种有机金属配合物作为发光区的掺杂剂的磷光主体材料的新组合。其中,双咔唑衍生物化合物由下式(1A)或(2A)表示:(1A),(2A),其中A1表示具有1至30个环状碳原子的取代或未取代的含氮杂环基团;A2表示具有6至30个环状碳原子的取代或未取代的芳香族碳氢基团,或具有1至30个环状碳原子的取代或未取代的含氮杂环基团;Xi和X2分别为连接基团;Y1至Y4各自表示取代基;p和q表示1至4的整数;r和s表示1至3的整数;有机金属配合物是一种具有下式(4A)所表示的取代化学结构的化合物:其中,每个R独立地选自H、烷基、烯基、炔基、烷基芳基、CN、CF3、CnF2n+1、三氟乙烯基、CO2R、C(O)R、NR2、NO2、OR、卤素、芳基、杂芳基、取代芳基、取代杂芳基或杂环基团的群;M是铂族金属;Ar'、Ar''、Ar'''和Ar''''各自独立地表示苯基吡啶配体上的取代或未取代的芳基或杂芳基取代基;a为0或1;b为0或1;c为0或1;d为0或1;m为1或2;n为1或2;m+n是可以与M配位的配体的最大数量,且至少有a、b、c和d中的一个为1,当a和b中至少有一个为1且b和c中至少有一个为1时,Ar'和Ar''中至少有一个与Ar'''和Ar''''中的至少一个不同。