Heteroleptic Ir(III) phosphors with bis-tridentate chelating architecture for high efficiency OLEDs
申请人:NATIONAL TSING HUA UNIVERSITY
公开号:US09219237B1
公开(公告)日:2015-12-22
A bis-tridentate iridium complex represented by a formula (I):
where R3 to R8, R21 to R23, R9, R10, X1, X2, and X3 are as defined in the specification.
Pyridazine-bridged cationic diiridium complexes as potential dual-mode bioimaging probes
作者:Ruth E. Daniels、Luke K. McKenzie、Jonathan R. Shewring、Julia A. Weinstein、Valery N. Kozhevnikov、Helen E. Bryant
DOI:10.1039/c8ra00265g
日期:——
novel diiridium complex [(N^C^N)2Ir(bis-N^C)Ir(N^C^N)2Cl]PF6 (N^C^N = 2-[3-tert-butyl-5-(pyridin-2-yl)phenyl]pyridine; bis-N^C = 3,6-bis(4-tert-butylphenyl)pyridazine) was designed, synthesised and characterised. The key feature of the complex is the bridging pyridazine ligand which brings two cyclometallated Ir(III) metal centres close together so that Cl also acts as a bridging ligand leading to a cationic
一种新型二铱络合物 [(N^C^N) 2 Ir(bis-N^C)Ir(N^C^N) 2 Cl]PF 6 (N^C^N = 2-[ 3- 叔丁基-设计、合成并表征了5-(吡啶-2-基)苯基]吡啶;双-N^C = 3,6-双(4-叔丁基苯基)哒嗪。该络合物的关键特征是桥联哒嗪配体,它将两个环金属化的 Ir( III ) 金属中心靠近在一起,使得 Cl 也充当桥联配体,形成阳离子络合物。该络合物的离子性质提供了提高水中溶解度的可能性。该配合物在红色区域显示出广泛的发射(脱气乙腈中的λ em = 520–720 nm, τ = 1.89 μs, Φ em = 62%)。通过多光子 ( λ ex = 800 nm) 和共焦 ( λ ex = 405 nm) 显微镜进行的细胞测定表明,该复合物进入细胞并定位于线粒体,从而证明了细胞通透性。此外,单线态氧产生的显着产量( Φ Δ = 0.45,直接方法,通过空气平衡乙腈中的1
TRANSITION METAL LUMINESCENT COMPLEXES AND METHODS OF USE
申请人:The University of Hong Kong
公开号:US20200172562A1
公开(公告)日:2020-06-04
Described herein are transition metal complexes containing nickel(II), as the central metal atom, and tridentate and tetradentate ligands. The transition metal complexes also include an ancillary ligand with strong σ-donating properties. The ancillary ligand enhances the luminescence by increasing the chances of populating the emissive state. The transition metal complexes are emissive at room temperature and/or low temperature in various media, rendering them useful as light-emitting materials for OLEDs.
US9219237B1
申请人:——
公开号:US9219237B1
公开(公告)日:2015-12-22
[EN] ORGANIC ELEMENT FOR ELECTROLUMINESCENT DEVICES<br/>[FR] ELEMENT ORGANIQUE POUR DISPOSITIFS ELECTROLUMINESCENTS
申请人:EASTMAN KODAK CO
公开号:WO2005056717A1
公开(公告)日:2005-06-23
Disclosed is an electroluminescent device comprising a light-emitting layer containing a light emitting material that contains an organometallic complex comprising a metal selected from the group consisting of Pt, Pd and Ir, and a tridentate (N^C^N) ligand, wherein the tridentate (N^C^N) ligand represents a ligand that coordinates to the metal through a nitrogen donor bond, a carbon-metal bond, and a nitrogen donor bond, in that order, wherein at least one of the nitrogen donors is part of an aromatic ring or an imine group. The invention also includes a display or room lighting device employing the device of the invention and a process of emitting light from the device of the invention. The device of the invention provides good luminance efficiency.