申请人:——
公开号:US20020066886A1
公开(公告)日:2002-06-06
Compounds of formula (I) are provided
1
which are particularly useful in STN Devices, wherein n may be 1-5; m may be 1-5; q may be 0, 1 or 2; A 1, A 2 are independently chosen from 1,4-disubstituted benzene, 2,5-disubstituted pyrimidine, or 2,5-disubstituted pyridine, which may be laterally substituted with F, Cl, Br or CN; X 2 may be H, F, Cl, Br, NO 2, CN, NCS or CH═C(CN) 2 ; X 1 and X 3 are independently chosen from H, F, Cl, Br, NO 2, CN, NCS or CH 3 ; Z 1, Z 2 are independently chosen from a direct bond, COO, OOC, C 2 H 4, CH 2 O, OCH 2, C 4 H 8, C 3 H 6 O, (E)—CH═CHC 2 H 4, (E)—CH═CHCH 2 O, —CaC—; provided that at least one of X 1, X 2, X 3 is halogen or nitrile and when m is 1, 3 or 5 the carbon-carbon double bond configuration is E and when m is 2 or 4 the carbon-carbon double bond configuration is Z.
提供了公式(I)的化合物,特别适用于STN设备,其中n可以为1-5;m可以为1-5;q可以为0、1或2;A1,A2分别选择自1,4-二取代苯、2,5-二取代嘧啶或2,5-二取代吡啶,后者可以横向取代F、Cl、Br或CN;X2可以为H、F、Cl、Br、NO2、CN、NCS或CH═C(CN)2;X1和X3分别选择自H、F、Cl、Br、NO2、CN、NCS或CH3;Z1、Z2分别选择自直接键、COO、OOC、C2H4、CH2O、OCH2、C4H8、C3H6O、(E)-CH═CHC2H4、(E)-CH═CHCH2O、-CaC-;前提是至少有一个X1、X2、X3是卤素或腈,当m为1、3或5时,碳-碳双键构型为E,当m为2或4时,碳-碳双键构型为Z。