Liquid crystal naphthalene compounds, represented by the following formula (1) are disclosed.
R-Z-A-#-NAP-Z′-R′ (1)
In the formula (1), R is an alkyl group containing 1 to 18 carbon atoms; R′ is an alkyl group containing 1 to 21 carbon atoms; NAP represents 2,6-naphthylene group;# represents C≡C;
A, Z and Z′ are as follows: 1) A is Pyr> and
(a) Z is - and Z′ is O or COO or (b) Z is OCO and Z′ is - or O; 2) A is FPhF and (a) Z is - or O and Z′ is -, O or COO or (b) Z is OCO and Z′ is - or O; 3) A is FPh and (a) Z is - and Z′ is O or COO, (b) Z is O and Z′ is -, O or COO or (c) Z is OCO and Z′ is - or O; 4) A is
揭示了液晶萘化合物,其表示为以下公式(1):R-Z-A-#-NAP-Z′-R′ (1)
在公式(1)中,R是含有1至18个碳原子的烷基基团;R′是含有1至21个碳原子的烷基基团;NAP代表2,6-萘基团;#代表C≡C;A,Z和Z′如下:
1)A是Pyr>,并且(a)Z是-,Z′是O或COO,或者(b)Z是OCO,Z′是-或O;
2)A是FPhF,并且(a)Z是-或O,Z′是-,O或COO,或者(b)Z是OCO,Z′是-或O;
3)A是FPh,并且(a)Z是-,Z′是O或COO,或者(b)Z是O,Z′是-,O或COO,或者(c)Z是OCO,Z′是-或O;
4)A是
Liquid crystal compounds with branched or cyclic end groups
申请人:——
公开号:US20040206933A1
公开(公告)日:2004-10-21
The use of a mesogenic compound having a terminal end chain comprising carbon, oxygen, or sulphur, which has at least one pendent C
1-4
alkyl, C
1-4
alkoxy or a cycloalkyl ring, arranged no more than 6 atoms from the end of the chain either decreasing the melting point, increasing the clearing point, increasing the speed of switching and/or increasing the tilt angle of a liquid crystal mixture. Examples of such compounds are of formula (I) where M is a mesogenic core group, and X and Y are terminal groups, provided that at least one group X or Y is a group of sub-formula (i) where Z
1
, Z
2
, R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, s, q, m and n are as defined in the specification. Novel compounds of formula (I) are also described and claimed.
1
使用具有末端端基的向列相化合物,其包含碳、氧或硫,并且具有至少一个悬挂的C1-4烷基、C1-4烷氧基或环烷基,离链末端不超过6个原子,可以降低液晶混合物的熔点、提高清晰点、增加切换速度和/或增加倾斜角度。这些化合物的例子是公式(I)的化合物,其中M是向列相核心基团,X和Y是末端基团,但至少一个基团X或Y是子公式(i)的基团,其中Z1、Z2、R1、R2、R3、R4、R5、R6、R7、s、q、m和n如规范中所定义。还描述和声明了公式(I)的新化合物。
Dioxane derivatives
申请人:Central Research Laboratories Limited
公开号:US05683623A1
公开(公告)日:1997-11-04
Dioxane derivatives for use as components in liquid crystal devices (LCDs) of general formula (A), wherein X is CH or B; R.sup.1, R.sup.2 are each A.sup.1, OA.sup.1, OCOA.sup.2, or COOA.sup.2 ; A.sup.1 is a straight or branched chain alkyl group containing from 1 to 20 carbon atoms and may be substituted with one or more F or CN. A.sup.2 is a straight or branched chain alkyl group containing from 1 to 20 carbon atoms and may be substituted with one or more F or CN and if straight may be unsubstituted. Y.sup.1, Y.sup.2, Y.sup.3 may each be (CH.sub.2).sub.p, (CH.sub.2).sub.p COO or OCO(CH.sub.2).sub.p ; p is from 0 to 10, n is 0 or 1, m is 0 or 1, either or both of Z.sub.1 and Z.sub.2 are F and, when not F, are H; Y.sup.4 is a covalent bond or, when n is 0, may be (a) LCDs, containing the devices exhibit very fast switching speed, bi-stable characteristics, enhanced greyscale and storage capabilities and a wide viewing angle.
二氧六环衍生物可用作通式(A)中的液晶装置(LCD)组分,其中X为CH或B;R.sup.1,R.sup.2分别为A.sup.1,OA.sup.1,OCOA.sup.2或COOA.sup.2;A.sup.1为含1至20个碳原子的直链或支链烷基,并可被一个或多个F或CN取代。A.sup.2为含1至20个碳原子的直链或支链烷基,并可被一个或多个F或CN取代,如果是直链则可以未被取代。Y.sup.1,Y.sup.2,Y.sup.3可以分别为(CH.sub.2).sub.p,(CH.sub.2).sub.p COO或OCO(CH.sub.2).sub.p;p为0至10,n为0或1,m为0或1,Z.sub.1和Z.sub.2中的任意一个或两个为F,当不为F时为H;Y.sup.4为共价键,或当n为0时,可以为(a)LCD,包含这些装置的液晶显示器具有非常快的开关速度、双稳态特性、增强的灰度和存储能力以及广阔的视角。
Gray, George W.; Hird, Michael; Lacey, David, Journal of the Chemical Society. Perkin transactions II, 1989, p. 2041 - 2054
作者:Gray, George W.、Hird, Michael、Lacey, David、Toyne, Kenneth J.
DOI:——
日期:——
DIOXANE DERIVATIVES
申请人:CENTRAL RESEARCH LABORATORIES LIMITED
公开号:EP0662114A1
公开(公告)日:1995-07-12
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