Organometallic complex and organic electroluminescent devices utilizing the same

Abstract

An organometallic complex. The organometallic complex has formula (I): wherein M is a transition metal comprising Ir, Pt, Pd, or Rh, A is a C3-20 aryl, C3-20 cycloalkyl, or C3-20 heterocyclic ring containing O, N, or S, R1˜R4 are the same or different and comprise H, halogen atoms, trifluoromethyl, C1-10 alkyl, C3-10 aryl, C3-10 cycloalkyl, or C3-10 heterocyclic ring containing O, N, or S, C is an acetyl acetone group or picolinic acid group wherein D, E, and F are the same or different and comprise H, halogen atoms, trifluoromethyl, C1-20 alkyl, C1-20 alkyl halide, C3-10 aryl, or C3-20 heterocyclic ring containing O, N, or S, and when M is Ir or Rh, m is 1˜3, n is 0˜3, and m+n=3 and when M is Pt or Pd, m is 1˜2, n is 0˜2, and m+n=2. The invention also provides an organic electroluminescent device utilizing the organometallic complex.

Dependencies are inferred from the claim text.