Ferroelectric liquid crystals for nonlinear optics applications
    1.
    发明授权
    Ferroelectric liquid crystals for nonlinear optics applications 失效
    用于非线性光学应用的铁电液晶

    公开(公告)号:US5543078A

    公开(公告)日:1996-08-06

    申请号:US137093

    申请日:1993-11-19

    摘要: The present invention provides ferroelectric liquid crystal and liquid crystal compounds, among which are compounds which possess large X.sup.(2), i.e. second order nonlinear susceptibility and thus make them useful in optical and nonlinear optical applications. The invention includes chiral nonracemic compounds of formula ##STR1## where one of n or m is 1; k is 1 and B is COO or OOC; R' is a straight-chain or branched alkyl or monoalkene group having from 1 to 20 carbon atoms where one or more of the non-neighboring carbon atoms in R', except any unsaturated carbon atoms, can be replaced with O, S or a Si(CH.sub.3).sub.2 group; and R' is a chiral nonracemic tail group selected from the group consisting of --O--C*H(CH.sub.3)R.sub.c, --O--C*H(CH.sub.3)COOR.sub.d and --O--CH.sub.2 C*HF--C*HF--R.sub.6 in which the * indicates an asymmetric carbon enriched in one stereoconfiguration which for --O--CH.sub.2 C*HF--C*HF--R.sub.e is either the (S,S) or (R,R) stereoconfiguration wherein: R.sub.c is a straight-chain or branched alkyl or monoalkene group having 2 to 15 carbon atoms; R.sub.d is a straight-chain or branched alkyl or monoalkene group having 2 to 13 carbon atoms and R.sub.e is a straight-chain or branched alkyl or monoalkene group having 2 to 11 carbon atoms wherein in R.sub.c, R.sub.d or R.sub.e one or more non-neighboring carbon atoms, except any unsaturated carbon atoms, can be substituted with an O, S, or Si(CH.sub.2).sub.2 group.

    摘要翻译: PCT No.PCT / US92 / 03427 Sec。 371日期:1993年11月19日 102(e)日期1993年11月19日PCT提交1992年4月24日PCT公布。 WO92 / 20058 PCT出版物 日期:1992年11月12日本发明提供铁电液晶和液晶化合物,其中,X(2)大的化合物即二阶非线性磁化率,因此可用于光学和非线性光学应用。 本发明包括其中n或m之一为1的式“IMAGE”的手性非微量化合物; k为1,B为COO或OOC; R'是具有1至20个碳原子的直链或支链烷基或单烯基,其中R'中的一个或多个不相邻的碳原子,除了任何不饱和的碳原子,可被O,S或 Si(CH 3)2基团; 并且R'是选自-OC * H(CH 3)R c,-OC * H(CH 3)COOR d和-O-CH 2 C * HF-C * HF-R6的手性非微量尾组,其中*表示 对于-O-CH 2 C * HF-C * HF-Re,富含一个立体构型的不对称碳是(S,S)或(R,R)立体构型,其中:Rc是直链或支链烷基或单烯基 具有2至15个碳原子; Rd为碳原子数2〜13的直链或支链烷基或单烯基,Re为碳原子数2〜11的直链或支链烷基或单烯基,其中,在Rc,Rd或Re中, 除了任何不饱和碳原子之外的碳原子可以被O,S或Si(CH 2)2基团取代。

    Ferroelectric liquid crystals for nonlinear optics applications
    2.
    发明授权
    Ferroelectric liquid crystals for nonlinear optics applications 失效
    用于非线性光学应用的铁电液晶

    公开(公告)号:US5658493A

    公开(公告)日:1997-08-19

    申请号:US452044

    申请日:1995-05-26

    摘要: This invention provides chiral, non-racemic compounds and liquid crystal compositions comprising such compounds. The compounds of this invention include those having the formula: ##STR1## wherein k=0 or 1 and when k=1, B=COO, OOC, --C.tbd.C--, or --C.tbd.C--C.tbd.C--; X.sub.1, X.sub.2, X.sub.3 and X.sub.4 are either H, an electron donor or an electron acceptor where at least one of the groups X.sub.1, X.sub.2, X.sub.3 or X.sub.4 is an electron acceptor and at least one of these groups is an electron donor or H and when one of X.sub.1 or X.sub.3 is an electron donor or H, the other is an electron acceptor and when one of X.sub.2 or X.sub.4 is an electron donor or H, the other is an electron acceptor; and R.sub.1 and R.sub.2 can be various substituted and unsubstituted alkanes and monoalkenes. Compounds provided include those where one of R.sub.1 or R.sub.2 is a chiral non-racemic tail group, particularly a group selected from --O--C*H(CH.sub.3)R.sub.c, --O--C*H(CH.sub.3)COOR.sub.d, and --O--CH.sub.2 C*HF--C*HF--R.sub.e in which the * indicates an asymmetric carbon enriched in one stereoconfiguration where R.sub.c, R.sub.d, and R.sub.e can be various substituted and unsubstituted alkanes and monoalkenes. The compounds of this invention are useful in the preparation of FLC mixtures and as non-linear optical materials.

    摘要翻译: 本发明提供手性,非外消旋化合物和包含这些化合物的液晶组合物。 本发明的化合物包括具有下列结构式的化合物:其中k = 0或1,当k = 1时,B = COO,OOC,-C 3 B或C 3 C C 3 C C; X 1,X 2,X 3和X 4是H,电子给体或电子受体,其中基团X1,X2,X3或X4中的至少一个是电子受体,并且这些基团中的至少一个是电子给体或H, 当X1或X3中的一个是电子给体或H时,另一个是电子受体,当X 2或X 4中的一个是电子给体或H时,另一个是电子受体; 并且R 1和R 2可以是各种取代和未取代的烷烃和单链烯烃。 提供的化合物包括其中R 1或R 2中的一个是手性非外消旋尾基,特别是选自-OC * H(CH 3)Rc,-OC * H(CH 3)COOR d和-O-CH 2 C * HF- C * HF-Re,其中*表示富含一个立体构型的不对称碳,其中Rc,Rd和Re可以是各种取代和未取代的烷烃和单烯烃。 本发明的化合物可用于制备FLC混合物和非线性光学材料。

    Ferroelectric liquid crystals for nonlinear optics applications
    3.
    发明授权
    Ferroelectric liquid crystals for nonlinear optics applications 失效
    用于非线性光学应用的铁电液晶

    公开(公告)号:US5637256A

    公开(公告)日:1997-06-10

    申请号:US452038

    申请日:1995-05-26

    摘要: This invention provides chiral nonracemic compound of formula: ##STR1## wherein n and m are 0 or 1, but one of n or m must be 1; k=0 or 1; B=COO or OOC; X.sub.1, X.sub.2, X.sub.3 and X.sub.4 are either H, an electron donor or an electron acceptor where at least one of the groups X.sub.1, X.sub.2, X.sub.3 or X.sub.4 is an electron acceptor and at least one of these groups is an electron donor and when one of X.sub.1 or X.sub.3 is an electron donor, the other is an electro a acceptor and when one of X.sub.2 or X.sub.4 is an electron donor, the other is an electron acceptor; and R.sub.1 and R.sub.2 can be various substituted and unsubstituted alkanes and monoalkenes. Compounds provided include those where one of R.sub.1 or R.sub.2 is a chiral non-racemic tail group, particularly a group selected from --O--C.sup.* H(CH.sub.3)R.sub.c, --O--C.sup.* H(CH.sub.3)COOR.sub.d, and --O--CH.sub.2 C.sup.* HF--C.sup.* HF--R.sub.2 in which the .sup.* indicates an asymmetric carbon enriched in one stereoconfiguration where R.sub.c, R.sub.d, and R.sub.e can be various substituted and unsubstituted alkanes and monoalkenes. The compounds of this invention are useful in the preparation of FLC mixtures and non-linear optical materials.

    摘要翻译: 本发明提供下式的手性非微量化合物:其中n和m为0或1,但n或m中的一个必须为1; k = 0或1; B = COO或OOC; X1,X2,X3和X4是H,电子给体或电子受体,其中基团X1,X2,X3或X4中的至少一个是电子受体,并且这些基团中的至少一个是电子给体,并且当一个 X 1或X 3是电子给体,另一个是电子受体,当X 1或X 4中的一个是电子给体时,另一个是电子受体; 并且R 1和R 2可以是各种取代和未取代的烷烃和单链烯烃。 提供的化合物包括其中R 1或R 2中的一个是手性非外消旋尾基,特别是选自-OC * H(CH 3)Rc,-OC * H(CH 3)COOR d和-O-CH 2 C * HF- C * HF-R2其中*表示富含一个立体构型的不对称碳,其中Rc,Rd和Re可以是各种取代和未取代的烷烃和单烯烃。 本发明的化合物可用于制备FLC混合物和非线性光学材料。