Patent ID: 7166368

Claim:
An active layer comprising at least one compound having the following formula: PtL 1 L 2 (I) where: L 2 is a monoanionic bidentate ligand selected from β-enolates, aminocarboxylates, iminocarboxylates, salicylates, hydroxyquinolinates and diarylphosphinoalkoxides; and wherein L 1 has a formula selected from Formula IV, and Formula VI, where A is NCH 3 ; R 1 is the same or different at each occurrence and is selected from D, C n (H+F) 2n+1 , F, OC n (H+F) 2n+1 , OCF 2 Y, SR 3 , and N(R 3 ) 2 , or adjacent R groups can join to form a 5- or 6-membered ring; R 3 is H, C n H 2n+1 ; Y is H, Cl, or Br; n is an integer from 1 through 12; α is 0, 1 or 2; and δ is 0 or an integer from 1 through 4.