Liquid crystal composition, liquid crystal compound, liquid crystal cured layer, optical film, polarizing plate, and image display device

A liquid crystal compound represented by Formula (2),

• in Formula (2),
• M represents a divalent mesogen skeleton represented by Formula (5),
• SP1 represents a single bond or a divalent aliphatic hydrocarbon group having 1 to 20 carbon atoms, where one or more of —CH2—'s constituting the aliphatic hydrocarbon group may be replaced with —O—, —S—, —NH—, —N(Q)-, or —CO—, Q represents a substituent,
• SP2 represents a single bond or a divalent aliphatic hydrocarbon group having 1 to 20 carbon atoms, where one or more of —CH2—'s constituting the aliphatic hydrocarbon group may be replaced with —O—, —S—, —NH—, —N(Q)-, or —CO—, Q represents a substituent,
• L1 represents a polymerizable group, and
• T represents a hydroxy group, a halogen atom, an alkylcarbonyloxy group having 1 to 6 carbon atoms, or a substituent represented by Formula (3) or (4),
• in Formula (5),
• * represents a bonding position to SP1 or SP2,
• B1 and B2 each independently represent an aromatic ring having 6 to 20 carbon atoms, which may have a substituent, or a divalent alicyclic hydrocarbon group having 5 to 20 carbon atoms, which may have a substituent, where one or more of —CH2—'s constituting the alicyclic hydrocarbon group may be replaced with —O—, —S—, or —NH—,
• D1, D2, D3, and D4 each independently represent a single bond, —CO—, —O—, —S—, —C(═S)—, —CR1R2—, —CR3═CR4—, —NR5—, or a divalent linking group consisting of a combination of two or more of these groups, where R1 to R5 each independently represent a hydrogen atom, a fluorine atom, or an alkyl group having 1 to 12 carbon atoms,
• m1 and m2 each independently represent an integer of 1 to 3, provided that, in a case where m1 represents 2 or 3, a plurality of B1's and D1's may be the same or different from each other, and in a case where m2 represents 2 or 3, a plurality of B2's and D2's may be the same or different from each other, and
• Ar represents any aromatic ring selected from the group consisting of groups represented by Formulae (Ar-1) to (Ar-7),
• in Formulae (Ar-1) to (Ar-7),
• * represents a bonding position to D1 or D2,
• Q1 represents N or CH,
• Q2 represents —S—, —O—, or —N(R6)—, where R6 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms,
• Y1 represents an aromatic hydrocarbon group having 6 to 12 carbon atoms, which may have a substituent, an aromatic heterocyclic group having 3 to 12 carbon atoms, which may have a substituent, or an alicyclic hydrocarbon group having 6 to 20 carbon atoms, which may have a substituent, where one or more of —CH2—'s constituting the alicyclic hydrocarbon group may be replaced with —O—, —S—, or —NH—,
• Z1, Z2, and Z3 each independently represent a hydrogen atom, a monovalent aliphatic hydrocarbon group having 1 to 20 carbon atoms, a monovalent alicyclic hydrocarbon group having 3 to 20 carbon atoms, a monovalent aromatic hydrocarbon group having 6 to 20 carbon atoms, a monovalent aromatic heterocyclic group having 6 to 20 carbon atoms, a halogen atom, a cyano group, a nitro group, —OR7, —NR8R9, —SR10, —COOR11, or —COR12, where R7 to R12 each independently represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms and Z1 and Z2 may be bonded to each other to form an aromatic ring,
• A3 and A4 each independently represent a group selected from the group consisting of —O—, —N(R13)—, —S—, and —CO—, where R13 represents a hydrogen atom or a substituent,
• X represents a non-metal atom of Groups 14 to 16, where a hydrogen atom or a substituent may be bonded to the non-metal atom,
• D7 and D8 each independently represent a single bond, —CO—, —O—, —S—, —C(═S)—, —CR1R2—, —CR3═CR4—, —NR5—, or a divalent linking group consisting of a combination of two or more of these groups, where R1 to R5 each independently represent a hydrogen atom, a fluorine atom, or an alkyl group having 1 to 12 carbon atoms,
• SP3 and SP4 each independently represent a single bond or a divalent aliphatic hydrocarbon group having 1 to 20 carbon atoms, where one or more of —CH2—'s constituting the aliphatic hydrocarbon group may be replaced with —O—, —S—, —NH—, —N(Q)-, or —CO—, Q represents a substituent,
• L3 and L4 each independently represent a monovalent organic group, where at least one of L3, L4, or L1 or L2 in Formula (B) represents a polymerizable group,
• Ax represents an organic group having 2 to 30 carbon atoms, which has at least one aromatic ring selected from the group consisting of an aromatic hydrocarbon ring and an aromatic heterocyclic ring,
• Ay represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, which may have a substituent, or an organic group having 2 to 30 carbon atoms, which has at least one aromatic ring selected from the group consisting of an aromatic hydrocarbon ring and an aromatic heterocyclic ring,
• where the aromatic rings in Ax and Ay may have a substituent, and Ax and Ay may be bonded to each other to form a ring, and
• Q3 represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, which may have a substituent,
• in Formulae (3) and (4),
• * represents a bonding position to SP2,
• X− represents a counter anion,
• RT1 to RT3 each independently represent an alkyl group having 1 to 6 carbon atoms, where one or more of —CH2—'s constituting the alkyl group may be replaced with —O—, —S—, —NH—, —N(Q)-, or —CO—, Q represents a substituent, two or three of RT1 to RT3 may be bonded to each other to form a ring,
• RT4 and RT5 each independently represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, where one or more of —CH2—'s constituting the alkyl group may be replaced with —O—, —S—, —NH—, —N(Q)-, or —CO—, Q represents a substituent, and
• A represents a 5-membered or 6-membered nitrogen-containing aromatic ring which may have a substituent.