OLED materials are provided that have the general formula:
R
1
−(Ar
i
)
n
−R
2
wherein the subscript n is an integer of from 5 to 15; the superscript i is an integer of from 1 to n and denotes the position downstream from R
1
; each Ar
i
is a substituted or unsubstituted aryl group; R
1
and R
2
are each substituents that increase the solubility of the para-phenylene compound in nonpolar organic solvents relative to the solubility of the corresponding compound wherein R
1
and R
2
are hydrogen; with the proviso that the Ar
i
groups are linked together in a 1,4-paraphenylene manner. v PATENT
所提供的 OLED 材料具有通式:
R
1
-(Ar
i
)
n
-R
2
其中,下标 n 是 5 到 15 之间的整数;上标 i 是 1 到 n 之间的整数,表示从 R
1
;每个 Ar
i
是取代或未取代的芳基; R
1
和 R
2
均为取代基,相对于相应化合物的溶解度,可增加对位苯化合物在非极性有机溶剂中的溶解度,其中 R
1
和 R
2
为氢;但 Ar
i
基团以 1,4-
联苯的方式连接在一起。