Phenoxaphosphine-Based Diphosphine Ligands. Synthesis and Application in the Hydroformylation Reaction
作者:Erik Zuidema、P. Elsbeth Goudriaan、Bert H. G. Swennenhuis、Paul C. J. Kamer、Piet W. N. M. van Leeuwen、Martin Lutz、Anthony L. Spek
DOI:10.1021/om901041r
日期:2010.3.8
to an increase in catalytic activity and a decrease in regioselectivity toward the linear aldehyde product. Xanthene-based ligands 1a−1c yielded highly active and regioselective hydroformylationcatalysts; ligands containing p-tolyl ether and ferrocene backbones 2a−2c and 3a−3c provided less active and less regioselective catalysts. Catalysts containing benzene-derived ligands 4a and 4b showed a remarkable
Strongly luminescent, neutral copper(I) complexes bearing 5-(2-pyridyl)tetrazolate and various phosphine ligands were synthesized. While the cationic copper(I) precursors 1b-4b do not exceed photoluminescence quantum yields (PLQY) of 4-46%, the neutral complexes 1a-4a show PLQYs of up to 89%.
Highly efficient OLED devices with very short decay times
申请人:UDC Ireland Limited
公开号:US10347851B2
公开(公告)日:2019-07-09
The present invention relates to organic light-emitting devices comprising (a) an anode, (i) a cathode, and (e) an emitting layer between the anode and cathode, comprising 2 to 40% by weight of a luminescent organometallic complex X having a difference of the singlet energy (ES1(X)) and the triplet energy (ET1(X)) of smaller than 0.2 eV [Δ (ES1(X))−(ET1(X))<0.2 eV], 0.05 to 5.0% by weight of a fluorescent emitter Y and 55 to 97.95% by weight of a host compound(s), wherein the amount of the organometallic complex X, the fluorescent emitter Y and the host compound(s) adds up to a total of 100% by weight and the singlet energy of the luminescent organometallic complex X (ES1(X)) is greater than the singlet energy of the fluorescent emitter Y (ES1(Y)) [(ES1(X))>ES1(Y)]. By doping, for example, an emitting layer containing a luminescent organometallic complex having a small S1-T1 splitting, with a fluorescent emitter the emission decay time can significantly be shortened without sacrificing external quantum efficiency (EQE) because of very efficient energy transfer.