A compound represented by the formula: wherein each of R 1 and R 2 independently represents a hydrogen atom, a halogen, NO 2, CN, NCS, a linear, branched or cyclic alkyl group having 1 to 12 carbon atoms (here, among -CH 2 - that configure the alkyl group, one -CH 2 - or two or more non-adjacent -CH 2 -may be substituted by -O-, -S-, -CO-, -COO-, -OCO-, -OCOO-, -CH=CH-, -C≡C-, -CONR 3 -, -NR 3 CO- or -NR 3 -) or P-Sp-L-, and at least one of R 1 and R 2 is P-Sp-L-; P represents a polymerizable functional group selected from a group represented by one of the following formulae (P-1) to (P-5): wherein each of R 11 to R 13 independently represents a hydrogen atom or a methyl group; Sp represents a single bond or an alkylene group having 1 to 12 carbon atoms (here, among non-terminal -CH 2 - that configure the alkylene group, one non-terminal -CH 2 - or two or more non-adjacent non-terminal -CH 2 - may be substituted by -O-, -S-, -CO-, -COO-, -OCO-, -CH=CH-, -C≡C-, -CONR 4 -, - NR 4 CO- or -NR 4 -); L represents -O-, -S-, -CO-, -COO-, -OCO-, -OCOO-, -CONR 5 -, -NR 5 CO-, -NR 5 - or a single bond; when Sp is a single bond, L is also a single bond; each of A 1 and A 2 independently represents a 1, 4-phenylene group; one or two or more hydrogen atoms in the 1,4-phenylene group may be substituted by an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkoxycarbonyl group having 2 to 5 carbon atoms, an acyloxy group having 2 to 5 carbon atoms, an acyl group having 2 to 4 carbon atoms, an amide group having 2 to 5 carbon atoms, a cyano group or a halogen atom; each of Z 1 and Z 2 independently represents -COO-, -OCO-, -CONR 6 -, -NR 6 CO-, -OCH 2 -, -CH 2 O-, -CH 2 S-, -SCH 2 -, -CH 2 CH 2 - or a single bond; each of X 1, X 2, X 3, X 4, X 5, X 6 and X 7 independently represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkoxycarbonyl group having 2 to 5 carbon atoms, an acyloxy group having 2 to 5 carbon atoms, an acyl group having 2 to 4 carbon atoms, an amide group having 2 to 5 carbon atoms, a cyano group or a halogen atom; each of R 3, R 4, R 5 and R 6 independently represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and each of m and n independently represents 0, 1 or 2, and m+n=1 or 2. wherein each of R 1 and R 2 independently represents a hydrogen atom, a halogen, NO 2, CN, NCS, a linear, branched or cyclic alkyl group having 1 to 12 carbon atoms (here, among -CH 2 - that configure the alkyl group, one -CH 2 - or two or more non-adjacent -CH 2 -may be substituted by -O-, -S-, -CO-, -COO-, -OCO-, -OCOO-, -CH=CH-, -C≡C-, -CONR 3 -, -NR 3 CO- or -NR 3 -) or P-Sp-L-, and at least one of R 1 and R 2 is P-Sp-L-; P represents a polymerizable functional group selected from a group represented by one of the following formulae (P-1) to (P-5): wherein each of R 11 to R 13 independently represents a hydrogen atom or a methyl group; Sp represents a single bond or an alkylene group having 1 to 12 carbon atoms (here, among non-terminal -CH 2 - that configure the alkylene group, one non-terminal -CH 2 - or two or more non-adjacent non-terminal -CH 2 - may be substituted by -O-, -S-, -CO-, -COO-, -OCO-, -CH=CH-, -C≡C-, -CONR 4 -, - NR 4 CO- or -NR 4 -); L represents -O-, -S-, -CO-, -COO-, -OCO-, -OCOO-, -CONR 5 -, -NR 5 CO-, -NR 5 - or a single bond; when Sp is a single bond, L is also a single bond; each of A 1 and A 2 independently represents a 1, 4-phenylene group; one or two or more hydrogen atoms in the 1,4-phenylene group may be substituted by an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkoxycarbonyl group having 2 to 5 carbon atoms, an acyloxy group having 2 to 5 carbon atoms, an acyl group having 2 to 4 carbon atoms, an amide group having 2 to 5 carbon atoms, a cyano group or a halogen atom; each of Z 1 and Z 2 independently represents -COO-, -OCO-, -CONR 6 -, -NR 6 CO-, -OCH 2 -, -CH 2 O-, -CH 2 S-, -SCH 2 -, -CH 2 CH 2 - or a single bond; each of X 1, X 2, X 3, X 4, X 5, X 6 and X 7 independently represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, an alkoxycarbonyl group having 2 to 5 carbon atoms, an acyloxy group having 2 to 5 carbon atoms, an acyl group having 2 to 4 carbon atoms, an amide group having 2 to 5 carbon atoms, a cyano group or a halogen atom; each of R 3, R 4, R 5 and R 6 independently represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and each of m and n independently represents 0, 1 or 2, and m+n=1 or 2.