Metal coordination compound, luminescence device and display apparatus
申请人:——
公开号:US20030068536A1
公开(公告)日:2003-04-10
An electroluminescence device having a layer containing a specific metal coordination compound is provided. The metal coordination compound is represented by formula (1) below:
ML
m
L′
n
(1),
wherein M is a metal atom of Ir, Pt, Rh or Pd; L and L′ are mutually different bidentate ligands; m is 1, 2 or 3 and n is 0, 1 or 2 with the proviso that m+n is 2 or 3; a partial structure MLm is represented by formula (2) shown below and a partial structure ML′
n
is represented by formula (3) or (4) shown below:
1
The metal coordination compound of the formula (1) is characterized by having at least one aromatic substituent for at least one of CyN1, CyN2, CyC1 and CyC2. The metal coordination compound having the aromatic substituent is effective in providing high-efficiency luminescence, long-term high luminance, and less deterioration by current passing.
Fluorine-substituted-4-alkenylbenzoic acid and derivatives thereof, and nematic liquid crystal composition containing cyanophenyl benzoate derivatives and liquid crystal display system using the same
申请人:DAINIPPON INK AND CHEMICALS, INC.
公开号:US20020053659A1
公开(公告)日:2002-05-09
A novel liquid crystal compound, a nematic liquid crystal composition, and a liquid crystal display system using the composition are disclosed herein. The liquid crystal compound is represented by the general formula (I):
1
wherein R represents a hydrogen atom or a straight chain alkyl group having 1 to 7 carbon atoms and each of X, Y and Z independently represents hydrogen atom or fluorine atom. The nematic liquid crystal composition of the present invention can provide liquid crystal materials in response to desired purposes even by its addition in a small amount without spoiling other characteristics.
Naphthalene derivative and liquid crystal composition comprising the same
申请人:Dainippon Ink and Chemicals, Inc.
公开号:US20030136944A1
公开(公告)日:2003-07-24
Disclosed in a novel liquid-crystalline compound which is a naphthalene derivative useful as an electro-optical liquid crystal display material, a liquid crystal composition containing such naphthalene derivatives and a liquid crystal display device comprising the same. The naphthalene derivative provided by the present invention exhibits an excellent liquid-crystallinity and miscibility with currently widely used liquid crystal compositions or compositions. The addition of the naphthalene derivative makes it possible to drastically lower the threshold voltage of the liquid crystal composition while maintaining its high response. The naphthalene derivative of the present invention is characterized by a large birefringence index. Further, most of the naphthalene derivative of the present invention has no strongly polar group in its molecule and thus can also be used for active matrix driving. Moreover, as shown in the foregoing examples, the naphthalene derivative of the present invention can be easily produced and is colorless and chemically stable. Accordingly, the liquid crystal composition comprising the naphthalene derivative of the present invention is extremely useful as a practical liquid crystal composition, particularly a liquid crystal composition which can operate within a wide temperature range and requires a high speed response and a low voltage driving.
Pharmaceutical compositions for enhancing the expression of apoAI are provided, which are used as medicaments for treatment of cardiovascular diseases on the basis of improving the functions of HDL.
Pharmaceutical compositions for enhancing the expression of apoAI which comprises a compound of formula (I):
in which X
1
and X
1
are independently an aryl or heteroaryl that may be optionally substituted, a hydrogen, a halogen, or the like; ring A is a benzene ring or 6-membered aromatic heterocyclic ring containing 1 to 3 N atoms that may be optionally condensed with another aromatic ring; R
1
to R
4
are independently a hydrogen, a halogen, a lower alkyl, a lower alkoxy or the like; a prodrug thereof, a pharmaceutically acceptable salt or solvate of them are disclosed.
Fluorine-substituted 4-alkenylbenzoic acid and derivatives thereof, and nematic liquid crystal composition containing cyanophenyl benzoate derivatives and liquid crystal display system using the same
申请人:DAINIPPON INK AND CHEMICALS, INC.
公开号:EP0919536A1
公开(公告)日:1999-06-02
A novel liquid crystal compound, a nematic liquid crystal composition, and a liquid crystal display system using the composition are disclosed herein. The liquid crystal compound is represented by the general formula (I):
wherein R represents a hydrogen atom or a straight chain alkyl group having 1 to 7 carbon atoms and each of X, Y and Z independently represents hydrogen atom or fluorine atom. The nematic liquid crystal composition of the present invention can provide liquid crystal materials in response to desired purposes even by its addition in a small amount without spoiling other characteristics.
本文公开了一种新型液晶化合物、向列液晶组合物以及使用该组合物的液晶显示系统。该液晶化合物由通式 (I) 表示:
其中 R 代表氢原子或具有 1 至 7 个碳原子的直链烷基,X、Y 和 Z 各自独立地代表氢原子或氟原子。本发明的向列液晶组合物即使添加量很小,也能提供符合所需目的的液晶材料,而不会破坏其他特性。