Patent ID: 6852429

Claim:
A pyrene based compound according to the following formula: wherein Z 1 represents a hydrogen atom, deuterium atom, oxygen atom, silicon atom, selenium atom, substituted or unsubstituted aryl group, substituted or unsubstituted heteroaryl group, substituted or unsubstituted aryl amine or a combination thereof, and Z 2 represents a hydrogen or deuterium atom; wherein one of Y 1 and Y 2 represents a hydrogen atom, deuterium atom, oxygen atom, silicon atom, selenium atom, a substituted or unsubstituted aryl group, substituted or unsubstituted heteroaryl group, substituted or unsubstituted aryl amine or a combination thereof, and the other of Y 1 and Y 2 represents a hydrogen or deuterium atom; wherein X 1 through X 6 independently represent hydrogen atoms, deuterium atoms, alkyl groups or aryl groups, and at least one of X 1 through X 6 represents a tert-butyl group; wherein at least one of X 1 through X 6 , Y 1 , Y 2 , Z 1 and Z 2 represents a deuterium atom; and wherein Z 1 and one of Y 1 and Y 2 independently represent a hole injection chromophore, an electron injection chromophore, or both.