Reactive mesogens

A compound of formula I,

• wherein
• P is a polymerisable group,
• Sp is a spacer group or a single bond,
• R11 is F, Cl, CN, NCS, alkyl, alkoxy, thioalkyl, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy or alkoxycarbonyloxy or P-Sp,
• A, B,
• D, and E denote, in case of multiple occurrence independently of one another, an alicyclic, heterocyclic, aromatic or heteroaromatic group with 4 to 20 ring atoms, which is monocyclic or polycyclic and which is optionally substituted by one or more groups L or P-Sp-, and one of rings C and D may also denote a single bond,
• L F, Cl, —CN, P-Sp-, or straight chain alkyl having 1 to 25 C atoms or, branched or cyclic alkyl having 3 to 25 C atoms, wherein one or more non-adjacent CH2-groups are optionally replaced by —O—, —S—, —CO—, —CO—O—, —O—CO—, —O—CO—O—, CR0═CR00—, —C═C—,
• in such a manner that O- and/or S-atoms are not directly connected with each other, and wherein one or more H atoms are each optionally replaced by P-Sp-, F or Cl, or two substituents L that are connected to directly adjacent C atoms may also form a cycloalkyl or cycloalkenyl group with 5, 6, 7 or 8 C atoms,
• C denotes
• M denotes CH2, C(CH3)2, CHF, CF2, NH, S or O,
• Z11, Z12 denotes, in case of multiple occurrence independently of one another, —O—, —S—, —CO—, —COO—, —OCO—, —S—CO—, —CO—S—, —O—COO—, —CO—NR0—, —NR0—CO—, —NR0—CO—NR00, —NR0—CO—O—, —O—CO—NR0—, —OCH2—, —CH2O—, —SCH2—, —CH2S—, —CF2O—, —OCF2—, —CF2S—, —SCF2—, —CH2CH2—, —(CH2)n1, —CF2CH2—, —CH2CF2—, —CF2CF2—, —CH═N—, —N═CH—, —N═N—, —CH═CR0—, —CY1═CY2—, —C═C—, —CH═CH—COO—, —OCO—CH═CH— or a single bond,
• n1 is 1, 2, 3 or 4,
• r denotes 0, 1, 2, 3 or 4,
• s denotes 0, 1, 2 or 3,
• t denotes 0, 1 or 2,
• R0, R00 denote H or alkyl having 1 to 12 C atoms,
• Y1, Y2 independently of each other denote H, F, Cl, NCS, or CN,
• n is 0, 1, 2, 3 or 4, and
• m is 0, 1, 2, 3 or 4.