Polymerizable compound, preparation method therefor, and use thereof

A polymerizable compound, wherein the polymerizable compound has a structure as shown in general formula I:

• wherein the P1 and P2 each independently represent an acrylate group, a methacrylate group, a fluoroacrylate group, a chloroacrylate group, an ethyleneoxy group, an oxetanyl group, or an epoxy group;
• the Z1 and Z2 each independently represent a single bond, —O—, —S—, —CO—, —CO—O—, —O—CO—, —O—CO—O—, —CH═N—, —N═CH—, —N═N—, a C1-C12 alkylene group, or a C2-C12 alkenyl group, wherein one or more hydrogen atoms in the C1-C12 alkylene group or the C2-C12 alkenyl group may each independently be substituted by F, Cl or CN, and one or more non-adjacent —CH2-groups may each independently be replaced by —O—, —S—, —NH—, —CO—, COO—, —OCO—, —OCOO—, —SCO—, —COS— or —C═C— in a way that is not directly connected to each other;
• L1, L2, L3, L4, L5, and L6 each independently represent H, —F, —Cl, —CH3, —C2H5, —OCH3, —OC2H5, —CF3 or OCF3;
• and L1 and L2 are not both H;
• L3 and L4 are not both H;
• L5 and L6 are not both H.