Optical isomer

1. An optical film,

which comprises a structural unit derived from a compound represented by the following general formula (I-A-111), a structural unit derived from a compound represented by the following general formula (I-A-221), a structural unit derived from a compound represented by the following general formula (I-A-121), and a structural unit derived from a compound represented by the following general formula (I-A-211):

wherein P 1 and P 2 respectively represent a group selected from the formulae (P-1) to (P-3):

and A 11 , A 12 , and A 21 each independently represent a 1,4-phenylene group or a 1,4-cyclohexylene group, wherein the group may be unsubstituted or substituted with one or more substituents L's, and L represents a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a pentafluorosulfuranyl group, a nitro group, a cyano group, an isocyano group, an amino group, a hydroxyl group, a mercapto group, a methylamino group, a dimethylamino group, a diethylamino group, a diisopropylamino group, a trimethylsilyl group, a dimethylsilyl group, a thioisocyano group, or a linear or branched alkyl group having 1 to 20 carbon atoms in which one —CH 2 — group or two or more —CH 2 — groups that are not adjacent to each other each may be independently substituted by —O—, —S—, —CO—, —COO—, —OCO—, —CO—S—, —S—CO—, —O—CO—O—, —CO—NH—, —NH—CO—, —CH═CH—COO—, —CH═CH—OCO—, —COO—CH═CH—, —OCO—CH═CH—, —CH═CH—, —CF═CF—, or —C≡C—, and one or more of arbitrary hydrogen atoms in the alkyl group may be substituted by a fluorine atom, or L represents a group represented by the following formula (I-RL):

wherein, P L represents a group selected from the above formulae (P-1) to (P-3), R SL represents a linear or branched alkyl group having 1 to 20 carbon atoms in which one —CH 2 — group or two or more —CH 2 — groups that are not adjacent to each other each may be independently substituted by —O—, —S—, —CO—, —COO—, —OCO—, —CO—S—, —S—CO—, —O—CO—O—, —CO—NH—, —NH—CO—, —CH═CH—COO—, —CH═CH—OCO—, —COO—CH═CH—, —OCO—CH═CH—, —CH═CH—, —CF═CF—, or —C≡C—, and one or more of arbitrary hydrogen atoms in the alkyl group may be substituted by a fluorine atom or a chlorine atom, Sp L represents an alkylene group having 1 to 20 carbon atoms, wherein plural Sp L groups, if present, may be the same or different, X L represents —O—, —S—, —OCH 2 —, —CH 2 O—, —CO—, —COO—, —OCO—, —CO—S—, —S—CO—, —O—CO—O—, —CO—NH—, —NH—CO—, —SCH 2 —, —CH 2 S—, —CF 2 O—, —OCF 2 —, —CF 2 S—, —SCF 2 —, —CH═CH—COO—, —CH═CH—OCO—, —COO—CH═CH—, —OCO—CH═CH—, —COO—CH 2 CH 2 —, —OCO—CH 2 CH 2 —, —CH 2 CH 2 —COO—, —CH 2 CH 2 —OCO—, —COO—CH 2 —, —OCO—CH 2 —, —CH 2 —COO—, —CH 2 —OCO—, —CH═CH—, —CH═N—N═CH—, —CF═CF—, —C≡C—, or a single bond, wherein plural X L groups, if present, may be the same or different, kL represents an integer of 0 to 10, and nL1 and nL2 each independently represent an integer of 0 to 8), wherein plural L groups, if present in the compound, may be the same or different, and Z 11 and Z 12 each independently represent —OCH 2 —, —CH 2 O—, —CH 2 CH 2 —, —COO—, —OCO—, —CO—NH—, —NH—CO—, —CH═CH—COO—, —CH═CH—OCO—, —COO—CH═CH—, —OCO—CH═CH—, —COO—CH 2 CH 2 —, —OCO—CH 2 CH 2 —, —CH 2 CH 2 —COO—, —CH 2 CH 2 —OCO—, or a single bond;

wherein P 1 and P 2 respectively represent the same meanings as in P 1 and P 2 in the general formula (I-A-111), and A 11 , A 12 , A 21 , Z 11 , and Z 12 respectively represent the same meanings as in A 11 , A 12 , Z 11 , and Z 12 in the general formula (I-A-111);

wherein P 1 and P 2 respectively represent the same meanings as in P 1 and P 2 the general formula (I-A-111), and A 11 , A 12 and Z 12 respectively represent the same meanings as in A 11 , A 12 , A 21 , Z 11 , and Z 12 in the general formula (I-A-111); and

wherein P 1 and P 2 respectively represent the same meanings as in P 1 and P 2 in the general formula (I-A-111), and A 11 , A 12 , A 21 , Z 11 , and Z 12 respectively represent the same meanings as in A 11 , A 12 , A 21 , Z 11 , and Z 12 in the general formula (I-A-111).

2. The optical film according to claim 1 , which further comprises a structural unit derived from a compound represented by the following general formula (II):

P 3 Sp 3 -X 3 k3 A 3 -Z 2 m2 A 4 X 4 -Sp 4 k4 P 4   (II)

wherein P 3 and P 4 each independently represent a group which undergoes polymerization by radical polymerization, cation polymerization, or anion polymerization,

Sp 3 and Sp 4 each independently represent a spacer group, wherein plural Sp 3 groups, if present, may be the same or different, and plural Sp 4 groups, if present, may be the same or different,

X 3 and X 4 each independently represent —O—, —S—, —OCH 2 —, —CH 2 O—, —CO—, —COO—, —OCO—, —CO—S—, —S—CO—, —O—CO—O—, —CO—NH—, —NH—CO—, —SCH 2 —, —CH 2 S—, —CF 2 O—, —OCF 2 —, —CF 2 S—, —SCF 2 —, —CH═CH—COO—, —CH═CH—OCO—, —COO—CH═CH—, —OCO—CH═CH—, —COO—CH 2 CH 2 —, —OCO—CH 2 CH 2 —, —CH 2 CH 2 —COO—, —CH 2 CH 2 —OCO—, —COO—CH 2 —, —OCO—CH 2 —, —CH 2 —COO—, —CH 2 —OCO—, —CH═CH—, —N═N—, —CH═N—N═CH—, —CF═CF—, —C≡C—, or a single bond, wherein plural X 3 groups, if present, may be the same or different, and plural X 4 groups, if present, may be the same or different,

k3 and k4 each independently represent an integer of 0 to 10,

A 3 and A 4 each independently represent a 1,4-phenylene group, a 1,4-cyclohexylene group, a bicyclo[2.2.2]octane-1,4-diyl group, a pyridine-2,5-diyl group, a pyrimidine-2,5-diyl group, a naphthalene-2,6-diyl group, a naphthalene-1,4-diyl group, a tetrahydronaphthalene-2,6-diyl group, a decahydronaphthalene-2,6-diyl group, or a 1,3-dioxane-2,5-diyl group, which may be unsubstituted or substituted with one or more substituents Us, wherein plural A 3 groups, if present, may be the same or different,

Z 2 represents —O—, —S—, —OCH 2 —, —CH 2 O—, —CH 2 CH 2 —, —CO—, —COO—, —OCO—, —CO—S—, —S—CO—, —O—CO—O—, —CO—NH—, —NH—CO—, —OCO—NH—, —NH—COO—, —NH—CO—NH—, —NH—O—, —O—NH—, —SCH 2 —, —CH 2 S—, —CF 2 O—, —OCF 2 —, —CF 2 S—, —SCF 2 —, —CH═CH—COO—, —CH═CH—OCO—, —COO—CH═CH—, —OCO—CH═CH—, —COO—CH 2 CH 2 —, —OCO—CH 2 CH 2 —, —CH 2 CH 2 —COO—, —CH 2 CH 2 —OCO—, —COO—CH 2 —, —OCO—CH 2 —, —CH 2 —COO—, —CH 2 —OCO—, —CH═CH—, —N═N—, —CH═N—, —N═CH—, —CH═N—N═CH—, —CF═CF—, —C≡C—, or a single bond, wherein plural Z 2 groups, if present, may be the same or different, and

m2 represents an integer of 0 to 5.

3. The optical film according to claim 1 , which further comprises a structural unit derived from a chiral compound.

4. The optical film according to claim 1 , which has a cholesteric structure.

5. A compound, which is represented by the general formula (I-A-111), the general formula (I-A-221), the general formula (I-A-121), or the general formula (I-A-211) as set forth in claim 1 .

6. A laminate film, comprising the optical film as set forth in claim 1 .

7. A display device, comprising the optical film as set forth in claim 1 .

8. A display device, comprising the laminate film as set forth in claim 6 .