Organic light emitting host materials
Disclosed herein are compounds represented by formula: where HT, ET, and R 1 -R 6 are described herein. Compositions of said compounds along with organic light-emitting diode (OLED) devices related thereto are also disclosed.
1. A compound represented by the formula:
where R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are independently H, C 1 -C 3 alkyl, or C 1-3 perfluoroalkyl; HT is optionally substituted carbazoyl, optionally substituted phenylnaphthylamine, or optionally substituted diphenylamine, where each m is independently 0, 1, or 2; and ET is selected from optionally substituted benzimidazol-2-yl, optionally substituted benzothiazol-2-yl, optionally substituted benzoxazol-2-yl, optionally substituted 3,3′-bipyridin-5-yl, optionally substituted quinolin-8-yl, optionally substituted quinolin-5-yl, and optionally substituted quinoxalin-5-yl, where n is 1 or 2.
2. The compound of claim 1 wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are H.
3. The compound of claim 1 wherein HT is selected from:
4. The compound of claim 1 wherein ET is selected from:
5. The compound of claim 1 wherein the compound is selected from:
6. An OLED device comprising a compound of claim 1 .
7. The OLED device of claim 6 wherein said compound is a host compound in a light-emitting layer.
8. The OLED device of claim 7 further comprising a hole-transport layer disposed between the light-emitting layer and an anode.
9. The OLED device of claim 7 further comprising an electron-transport layer disposed between the light-emitting layer and a cathode.
10. The OLED device of claim 8 further comprising an electron-transport layer disposed between the light-emitting layer and a cathode.