Cyclometalated Au(III) Complexes Suitable for Electroluminescent Devices
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United States of America Patent
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Issued Date -
Sep 5, 2013
app pub date -
Nov 10, 2011
filing date -
Nov 10, 2010
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Abstract
Monocyclometalated Au(III) complexes, cis-[(N̂C)AuL1L2] and cis-[(N̂C)Au L1̂L2] represented by generic chemical formulae 1a and 1b respectively with ligands L1 and L2 being either similar (L1=L2) or dissimilar (L1≠L2) but with at least one of either (L1 or L2) comprising a σ-donating carbanionic group is described here. Also described are Au(III) complexes of formula in which L3 denotes a neutral donor ligand bound in a tridentate fashion. The complexes depicted by the formulae 1a, 1b and 1c in the present invention are suitable as emissive phosphorescent organometallic materials in OLEDs.
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