申请人:Kyushu University,
National University Corporation
公开号:EP2733762A1
公开(公告)日:2014-05-21
An organic electroluminescence element in which a compound represented by the general formula below is used in a light-emitting layer exhibits a high emission efficiency and is inexpensive to provide. At least one of R1 to R8 and R17 represent an electron-donating group and the others represent a hydrogen atom; at least one of R9 to R16 represent an electron-withdrawing group that does not have an unshared electron pair at the α-position thereof and the others represent a hydrogen atom; Z represents a single bond or >C=Y; Y represents O, S, C (CN) 2 or C(COOH)2; provided that when Z is a single bond, then at least one of R9 to R16 is an electron-withdrawing group that does not have an unshared electron pair at the α-position thereof.
一种有机电致发光元件,其发光层中使用了下式通式所代表的化合物,该元件具有较高的发光效率,且成本低廉。R1 至 R8 和 R17 中至少有一个代表电子供体,其它代表氢原子;R9 至 R16 中至少有一个代表在其 α 位上没有未共享电子对的电子抽离基团,其它代表氢原子;Z 代表单键或 >C=Y;Y 代表 O、S、C (CN) 2 或 C(COOH)2;条件是当 Z 为单键时,R9 至 R16 中至少有一个是在其 α 位上不具有未共享电子对的抽电子基团。