Universal Display Corporation
ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

Abstract:

A compound of Formula I ##STR00001## wherein Z.sup.1, Z.sup.2, Z.sup.3, and Z.sup.4 are independently selected from C or N; wherein one of Z.sup.1 or Z.sup.3 is N and the other is C, and one of Z.sup.2 or Z.sup.4 is N and the other is C; and if Z.sup.3 and Z.sup.4 are N, then one of R.sup.B and one of R.sup.C is selected from the group consisting of aryl, substituted aryl, heteroaryl, and substituted heteroaryl; or if Z.sup.1 and Z.sup.2 are N and, then one of R.sup.A, one of R.sup.B or one of R.sup.C is selected from the group consisting of an optionally substituted aryl, and an optionally substituted heteroaryl. An organic light emitting diode/device (OLED) that includes an anode, a cathode, and an organic layer disposed between the anode and the cathode. The organic layer includes a compound of Formula I above. The OLED can be incorporated into a consumer product, an electronic component module, and/or a lighting panel.