Patent ID: 8043724

Claim:
A compound, having the structure: wherein M is a metal having an atomic weight greater than 40; (C—N) is a substituted or unsubstituted cyclometallated ligand; each of R 8 and R 11 to R 14 is independently selected from hydrogen, alkyl, alkenyl, alkynyl, alkylaryl, CF 3 , NO 2 , halo, aryl, heteroaryl, substituted aryl, substituted heteroaryl, or a heterocyclic group; Z is selected from —CH 2 —, substituted carbon, NH, substituted nitrogen, —O—, —S—, and substituted silicon; optionally, any two adjacent substituted positions together form, independently, a fused 4- to 7-member cyclic group, wherein said cyclic group is cycloalkyl, cycloheteroalkyl, aryl, or heteroaryl, and wherein the 4- to 7-member cyclic group may be optionally substituted; X is independently selected from hydrogen, alkyl, alkenyl, alkynyl, alkylaryl, CN, CF 3 , NO 2 , halo, aryl, heteroaryl, substituted aryl, substituted heteroaryl, or a heterocyclic group; n has a value of at least 1; and m +n is the maximum number of ligands that may be attached to the metal.