US 7,320,833 B2
Electroluminescent platinum compounds and devices made with such compounds
Kerwin D. Dobbs, Wilmington, Del. (US); Norman Herron, Newark, Del. (US); and Viacheslav A. Petrov, Hockessin, Del. (US)
Assigned to E.I. du Pont de Nemours and Company, Wilmington, Del. (US)
Filed on Feb. 06, 2004, as Appl. No. 10/774,285.
Application 10/774285 is a continuation in part of application No. 10/768209, filed on Jan. 30, 2004, abandoned.
Application 10/768209 is a continuation in part of application No. 10/284728, filed on Oct. 31, 2002, granted, now 7,166,368.
Claims priority of provisional application 60/347910, filed on Nov. 07, 2001.
Prior Publication US 2004/0197602 A1, Oct. 07, 2004
Int. Cl. H01L 51/00 (2006.01); C07D 213/02 (2006.01); H01L 51/54 (2006.01); C09K 11/06 (2006.01)
U.S. Cl. 428—690  [428/917; 313/504; 257/E51.044; 546/4] 17 Claims
 
1. An active layer comprising at least one compound having Formula III:
PtL1L3L4  (III)
where:
L1 has Formula IV:

OG Complex Work Unit Drawing
wherein:
R1=H, R4, OR4, N(R4)2
R2=H, CnF2n+1,
R3=H, CnF2n+1,
R4 is the same or different at each occurrence and is H, alkyl, aryl, or adjacent R4 groups can join together to form a 5- or 6-membered ring, and
n is an integer from 1 through 20;
L3 is a monoanionic monodentate ligand; and
L4 is a nonionic monodentate phosphine ligand.