Design, synthesis and characterization of self-assembled As2L3 and Sb2L3 cryptands
作者:Sean A. Fontenot、Virginia M. Cangelosi、Melanie A. W. Pitt、Aaron C. Sather、Lev N. Zakharov、Orion B. Berryman、Darren W. Johnson
DOI:10.1039/c1dt10817d
日期:——
The syntheses and X-ray crystal structures of six new self-assembled supramolecular As and Sb-containing cryptands are described. Analysis in the context of previously reported As2L3 and Sb2L3 cryptands reveals that small differences in ligand geometries result in significant differences in the helicity of the complexes and the stereochemistry of the metal coordination within the assembled complexes
描述了六个新的自组装的超分子含As和Sb的配体的合成和X射线晶体结构。在先前报道的As 2 L 3和Sb 2 L 3配体的背景下进行的分析表明,配体几何形状的细微差异会导致复合物的螺旋度和组装的复合物中金属配位的立体化学存在显着差异。另外,描述了一种新的合成路线,该路线涉及将反应物暴露于真空中以帮助促进自组装。
Polybutadiene composition
申请人:——
公开号:US20020032256A1
公开(公告)日:2002-03-14
A polybutadiene composition comprising a polybutadiene type polymer and a compound represented by the following formula (I):
1
wherein Ar
1
and Ar
2
each independently represent an aromatic ring, X and Y each independently represent an alkylene group having one or two carbon atoms, an oxygen atom or a carbonyl group, is provided; and thermal degradation of the polybutadiene type polymer can be prevented even in an air-free environment.
一种聚丁二烯组合物,由聚丁二烯类聚合物和下式(I)所代表的化合物组成:
1
其中 Ar
1
和 Ar
2
分别独立地代表一个芳香环,X 和 Y 分别独立地代表一个或两个碳原子的亚烷基、一个氧原子或一个羰基;即使在无空气环境中,也能防止聚丁二烯型聚合物的热降解。
Disclosed is an organic electroluminescent element which is characterized in that constituent layers including at least a phosphorescent light-emitting layer are provided between a pair of electrodes, and at least one of the constituent layers contains a compound represented by general formula (1). (In the formula, A
1
, A
2
and A
3
each represents a substituent; n1 and n2 each represents an integer of 0-3; X
1
and X
2
each represents an oxygen atom, a sulfur atom, an alkylene group, an imino group, a carbonyl group, a sulfoxide group or a sulfonyl group, or alternatively X
2
represents a bonding hand; and Z
1
, Z
2
, Z
3
and Z
4
each represents an optionally substituted aromatic heterocyclic ring or an aromatic hydrocarbon ring, provided that all of the Z
1
, Z
2
, Z
3
and Z
4
are not aromatic hydrocarbon rings at the same time.)
LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF
申请人:JAPAN DISPLAY INC.
公开号:US20150210923A1
公开(公告)日:2015-07-30
An IPS type liquid crystal display device superior in mass productivity and improved in image quality with a higher contrast ratio by decreasing the occurrence of defective display due to the disorder of the initial liquid crystal alignment by the liquid orientation control film and realizing stable alignment of liquid crystals comprises: a pair of substrates, at least one which is transparent; a liquid crystal layer disposed between the pair of substrates; a group of electrodes formed on at least one of the pair of substrates to apply an electric field to the liquid crystal layer; plural active elements connected to the group of electrodes; and an orientation control film disposed on at least one of the pair of substrates, wherein said orientation control film is made of a photosensitive polyimide and a polyamide acid ester and is given orientation control ability by being irradiated with substantially linearly polarized light.