Fluorinated fluorene derivatives
    42.
    发明授权
    Fluorinated fluorene derivatives 有权
    氟化芴衍生物

    公开(公告)号:US07087272B2

    公开(公告)日:2006-08-08

    申请号:US10473332

    申请日:2002-03-07

    摘要: The invention relates to fluorinated fluorene derivatives of negative DC anisotropy, of the formula I R1—(—A1—Z1—)k1—(—A2—Z2—)k2—W—(—Z3—A3—)k3—(—Z4—A4—)k4—R2I in which W denotes the sub-formula L1 and L2, independently of one another, are H, F, Cl, —CH2F, —CHF2 or —CF3, with the proviso that L1 and L2 are not both H, L3 and L4, independently of one another, are H or F, and R1, R2, A1, A2, A3, A4, Z1, Z2, Z3, Z4, k1, k2, k3 and k4 are as defined above. The invention furthermore relates to liquid-crystalline media and to optical and electro-optical display elements.

    摘要翻译: 本发明涉及负直流各向异性的氟化芴衍生物,式I <βin-line-formula description =“In-line Formulas”end =“lead”?> R 1 - ( - - - - - - - - - - - - - - - - - - ( - 2 - - - - - - - - - - - - - - - - - - - - - - ( - Z - SUP> 4 4 其中W表示子公式L 1和L 2彼此独立的“公式”end =“tail”?>是H,F,Cl, -CH 2 2 F,-CHF 2或-CF 3 3,条件是L 1和L 2, SUP> 2 不是H,L 3和L 4都彼此独立地是H或F,R 1, SUP>,R 2 2,A 1,A 2,A 3,A 4, Z 1,Z 1,Z 2,Z 3,Z 4,K 1,K 2,K 3和K 4 如上所述。 本发明还涉及液晶介质和光学和电光显示元件。