m-TERPHENYL COMPOUND DERIVATIVES AND APPLICATION FOR ORGANIC LIGHT EMITTING DIODE
申请人:CHENG Chien-Hong
公开号:US20110220880A1
公开(公告)日:2011-09-15
An m-terphenyl derivative has a structure of formula (I) or (II):
wherein A and B are five-membered heterocyclic compounds containing nitrogen, each of substituents R, R
1
and R
2
is a member independently selected from the group consisting of H, halo, cyano, trifluoromethyl, amino, C
1
-C
10
alkyl, C
2
-C
10
alkenyl, C
2
-C
10
alkynyl, C
3
-C
20
cycloalkyl, C
3
-C
20
cycloalkenyl, C
1
-C
20
heterocycloalkyl, C
1
-C
20
heterocycloalkenyl, aryl and heteroaryl. The compound of the present invention may have advantages in good electron affinity, low HOMO and thereby achieving hole blocking and may be used for electron transport material and/or electron injection material.