作者:Heng Zhang、Rong-Bin Hu、Xiao-Yu Zhang、Shi-Xia Li、Shang-Dong Yang
DOI:10.1039/c4cc01238k
日期:——
A novel and efficient Pd-catalyzed C–H acetoxylation is described. The approach uses R2(O)P as a directing group to synthesize various substituted 2′-phosphoryl biphenyl-2-OAc compounds.
Simple Bipolar Molecules Constructed from Biphenyl Moieties as Host Materials for Deep-Blue Phosphorescent Organic Light-Emitting Diodes
作者:Cong Fan、Fangchao Zhao、Pei Gan、Sifen Yang、Tengxiao Liu、Cheng Zhong、Dongge Ma、Jingui Qin、Chuluo Yang
DOI:10.1002/chem.201103703
日期:2012.4.27
Simple is good! Based on biphenylmolecules, two bipolarhostmaterials with high triplet energies have been rationally designed, synthesized, and fully characterized. Deep blue phosphorescentorganic light‐emitting diodes, which employ the new hosts and an iridium(III) complex as triplet emitter, show a maximum current efficiency of 40 cd A−1, a maximum power efficiency of 36 lm W−1, and a maximum
简单就是好!基于联苯分子,已经合理地设计,合成并充分表征了具有高三重态能量的两种双极性主体材料。深蓝色磷光有机发光二极管采用了新的主体和铱(III)配合物作为三重态发射极,其最大电流效率为40 cd A -1,最大功率效率为36 lm W -1,并且最大外部量子效率为19.5%。
Straightforward Access to Multifunctional π‐Conjugated P‐Heterocycles Featuring an Internal Ylidic Bond**
A simple synthesis of P-heterocycles featuring an internalylidicbond is reported. The stability of the compounds tolerates post-functionalization (direct arylation) and the strategy is also compatible with the preparation of polyaromatic scaffolds (acenes, helicenes). Molecular engineering allows tuning the optical and redox properties, making them valuable dyes for a large panel of photonic or opto-electronic
An amino-phosphonio-carbene featuring a bromobiphenyl backbone was prepared and spectroscopically characterized at low temperature. This carbene was found to readily rearrange upon warm up, affording an original tricyclic phospholium derivative, presumably via a norcaradiene/tropylium isomerization. (c) 2006 Elsevier Ltd. All rights reserved.
Enantioselective Catalysis 113: New Menthylphosphane Ligands Differing in Steric and Electronic Properties
作者:H. Brunner、M. Janura
DOI:10.1055/s-1998-1996
日期:1998.1
A concept for bisphosphane ligands was developed, in which chirality is derived from the optically active (1R,3R,4S)-menthyl substituents in PMen2 groups and the backbone between the phosphorus units is varied (o-phenylene, 2,2′-biphenylene, 1,1′-ferrocenediyl); one of the two PMen2 groups was also replaced by a PPh2 unit. The synthesis and characterisation of seven new menthylphosphanes is described. Emphasis is put on the NMR assignment of the menthyl protons by two-dimensional methods and 13C-1H shift correlation. The ligands have been used in Rh and Ni complexes in several model reactions of enantioselective catalysis giving optical inductions in the low to middle range.