Patent ID: 8012604

Claim:
An electroluminescent compound having the following general chemical formula: wherein R 1 , R 2 , R 3 and R 4 can be the same or different and are independently selected from the group consisting of hydrogen; substituted and unsubstituted hydrocarbyl groups; substituted and unsubstituted aliphatic groups; substituted and unsubstituted aromatic, heterocyclic and polycyclic ring structures; aryloxy groups; fluorocarbon groups; halogens; and thiophenyl groups; further wherein R 1 , R 2 and R 3 can also form substituted and unsubstituted fused aromatic, heterocyclic and polycyclic ring structures and can be copolymerisable with a monomer; M is selected from the group consisting of ruthenium, rhodium, palladium, osmium, iridium and platinum; and the sum (n+1) is equal to the valency of M.