Curable composition and coating film

A curable composition comprising:

• at least one polyfunctional compound selected from the group consisting of a compound represented by General Formula (I) and a compound represented by General Formula (II);
• a π-conjugated polymer;
• and
• an organic solvent,
• wherein the π-conjugated polymer is a block copolymer,
• in General Formula (I), R's each independently represent a hydrogen atom or a methyl group, and
• L's each independently represent —O—, an alkylene group having 2 to 4 carbon atoms, or a divalent linking group formed by combination thereof,
• in General Formula (II), R1's each independently represent a hydrogen atom or a methyl group,
• R2 and R4 each independently represent —O—, an alkylene group having 1 to 4 carbon atoms, or a divalent linking group formed by combination thereof,
• R3 represents —O—, an alkylene group having 2 to 4 carbon atoms, a group represented by General Formula (III), or a divalent linking group formed by combination thereof, and
• L1 and L2 each independently represent a single bond or a group represented by General Formula (III),
• in General Formula (III), R1 represents a hydrogen atom or a methyl group, and * represents a bonding position.