A compound having a structure of the formula Ir(L
A
)(L
B
), in which L
A
is a bidentate, tridentate, tetradentate, pentadentate, or hexadentate ligand and L
B
is a monodentate, bidentate, tridentate, or tetradentate ligand, or not present, and where the total denticity of L
A
plus L
B
is 6, and L
A
includes at least one structure of Formula I:
is disclosed as a useful phosphorescent emitter compound.
The present invention includes a new series of heteroleptic iridium complexes that demonstrate high efficiency in OLED device.
这项发明包括一系列新的杂环铱配合物,这些配合物在OLED器件中表现出高效率。
Organic electroluminescent materials and devices
申请人:Universal Display Corporation
公开号:US10276809B2
公开(公告)日:2019-04-30
This invention discloses novel ligands for metal complexes. These ligands comprise a new side chain, namely silacycloalkane, which could increase the dopants efficiency, tune the emission color, and enhance the lifetime.
Disclosed are an organometallic complex comprising a new six-membered N-heterocyclic ligand, and an application thereof in an organic electronic device, especially in a phosphorescent organic light-emitting diode. The present invention further relates to an organic electronic device comprising the organometallic complex according to the present invention, especially an organic light-emitting diode, and an application thereof in display and illumination technology. In the present invention, the device structure is optimized and the concentration of the metal complex in the substrate is changed, so that the device achieves the optimal performance, and an OLED device having high efficiency, high luminance and high stability is achieved, thereby providing a better choice of materials for full-colour display and illumination application.
Boron Lewis Acid-Catalyzed Hydrophosphinylation of <i>N</i>-Heteroaryl-Substituted Alkenes with Secondary Phosphine Oxides
作者:Jimin Han、Jongwon Kim、Jaehoo Lee、Younghun Kim、Sarah Yunmi Lee
DOI:10.1021/acs.joc.0c02246
日期:2020.12.4
secondary phosphine oxides that furnishes various phosphorus-containing N-heterocycles. This process proceeds under mild conditions and enables the introduction of a phosphorus atom into multisubstituted alkenylazaarenes. The available mechanistic data can be explained by a reaction pathway wherein the C–P bond is created by the reaction between the activated alkene (by coordination to a boron catalyst)