Patent ID: 6818260
Filing Date: 2004-11-16
Classification: C07D,C09K,H01B,H01L,Y02E

Abstract:
A liquid crystal mixture comprising one or more thienothiophene according to formula I, and one or more further compounds, wherein at least one of said thienothiophene compound and/or said further compounds is mesogenic or liquid crystalline,R1â€”Z1â€”(A1â€”Z2)mâ€”(Tâ€”Z3)nâ€”(A2â€”Z4)oâ€”R2â€ƒâ€ƒI wherein R1 and R2 are each independently, H, halogen, CN, NO2, or straight chain, branched or cyclic alkyl with 1 to 20 C-atoms, which is unsubstituted, or mono- or poly-substituted by F, Cl, Br, I or CN, wherein optionally one or more non-adjacent CH2 groups are replaced, in each case independently, by â€”Oâ€”, â€”Sâ€”, â€”NHâ€”, â€”NR0â€”, â€”SiR0R00â€”, â€”COâ€”, â€”COOâ€”, â€”OCOâ€”, â€”OCOâ€”Oâ€”, â€”Sâ€”COâ€”, â€”COâ€”Sâ€”, â€”CH&boxH;CHâ€” or â€”Câ‰¡Câ€” in such a manner that O and/or S atoms are not linked directly to one another, R0 and R00 are independently of each other H or alkyl with 1 to 12 C-atoms, A1 and A2 are independently of each other an alicyclic or aromatic group which optionally contains one or more hetero atoms and optionally exhibits one or more fused rings, and A1 may also be T, Z1 to Z4 are independently of each other â€”Oâ€”, â€”Sâ€”, â€”COâ€”, â€”COOâ€”, â€”OCOâ€”, â€”Oâ€”COOâ€”, â€”COâ€”NR0â€”, â€”NR0â€”COâ€”, â€”OCH2â€”, â€”CH2Oâ€”, â€”SCH2â€”, â€”CH2Sâ€”, â€”CF2Oâ€”, â€”OCF2â€”, â€”CF2Sâ€”, â€”SCF2â€”, â€”CH2CH2â€”, â€”CH2CF2â€”, â€”CH2CF2â€”, â€”CF2CF2â€”, â€”CH&boxH;Nâ€”, â€”N&boxH;CHâ€”, â€”N&boxH;Nâ€”, â€”CH&boxH;CR0â€”, â€”CX1&boxH;CX2â€”, â€”Câ‰¡Câ€”, â€”CH&boxH;CHâ€”COOâ€”, â€”OCOâ€”CH&boxH;CHâ€” or a single bond, X1 and X2 are independently of each other H, F, Cl or CN, T is a group consisting of 3, 4, 5 or 6 fused thiophene rings wherein at least 3 of said thiophene rifles are fused together, and which in each case are optionally mono- or polysubstituted by R1, m and o are independently of each other 0, 1, 2 or 3, and n is 1, 2 or 3.