Universal Display Corporation
ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

Abstract:

A compound comprising a metal M and a ligand L.sub.A, where L.sub.A includes a structure of Formula I, ##STR00001## is disclosed. In Formula I, each of L.sup.1 and L.sup.2 is a direct bond of a linking group; each of X.sup.1 to X.sup.16 is C or N; each of R, R', R.sup.A, R.sup.B, R.sup.C, and R.sup.D is independently hydrogen or a General Substituent. OLEDs, consumer products, and formulations including the compound are also disclosed.