Emissive compounds for organic light-emitting diodes
Disclosed herein are compounds containing an optionally substituted (2-phenylpyridinato-N,C 2′ )(2,4-pentanedionato)Pt(II). Some embodiments provide a light-emitting device, having an anode layer, a cathode layer, and a light-emitting layer positioned between, and electrically connected to, the anode layer and the cathode layer, wherein the light-emitting layer contains a compound disclosed herein.
1. A compound represented by Formula VI:
wherein, R 1 , R 3 , R 4 , R 5 , R 6 , R 7 , and R 8 are independently hydrogen, C 1-30 alkyl, halo, C 1-6 haloalkyl, C 6-10 aryl, or C 3-10 heteroaryl;
at least one of R 2 , R 9 , R 10 and R H is independently D;
each D is independently:
wherein each R is independently C 2-4 alkylene;
each Het is independently selected from the group consisting of
each optionally substituted with alkyl, halogen, alkoxy, or haloalkyl, and
any of R 2 , R 9 , R 10 and R 11 which are not D, are independently hydrogen, C 1-30 alkyl, C 1-30 alkoxy, halo, C 6-10 aryl, or C 3-10 heteroaryl.
2. The compound of claim 1 , wherein at least one of R 5 , R 6 , R 7 , and R 8 is halo or C 1-6 haloalkyl.
3. The compound of claim 2 , wherein R 5 and R 7 are F.
4. The compound of claim 2 , wherein R 6 and R 8 are CF 3 .
5. The compound of claim 1 , wherein each D is independently selected from the group consisting of:
6. The compound of claim 1 , wherein R 9 is:
7. The compound of claim 1 , wherein R 9 is:
8. The compound of claim 1 , wherein at least one of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , and R 11 is methyl, ethyl, a propyl isomer, a butyl isomer, a pentyl isomer, or a hexyl isomer.
9. The compound of claim 8 , wherein R 11 is methyl or t-butyl.
10. The compound of claim 1 , wherein R 2 is:
11. The compound of claim 1 , wherein R 2 is:
12. The compound of claim 1 , wherein R 2 is:
13. The compound of claim 1 selected from the group consisting of:
14. A light-emitting device, comprising:
an anode layer;
a cathode layer; and
a light-emitting layer positioned between, and electrically connected to, the anode layer and the cathode layer, wherein the light-emitting layer comprises a compound of claim 1 .
15. The device of claim 14 , wherein the light-emitting layer comprises the compound without any additional electron-transport or hole-transport material.
16. The device of claim 15 , wherein the device comprises no electron-transport or hole-transport layer.
17. The device of claim 16 , wherein the device consists essentially of the anode layer, the cathode layer, and the light-emitting layer.