Fluorene-containing compound and method for making the same

A fluorene-containing compound having a formula (I)

• where:
• X is a single bond or —OC3H5(OH)—;
• and
• R is selected from the group consisting of a hydrogen atom, an epoxy-containing group, an alkenyl group, an unsaturated acyl group, an alkyl-substituted unsaturated acyl group,
• in which
• R4 is an alkylene group,
• R5 is an acrylate group or a methacrylate group,
• p ranges from 1 to 4,
• each of R6 and R7 is the same or different in each repeating unit p, and is independently a hydrogen atom, an alkyl group, or a hydroxyl group, and
• one of R9 and R10 is a hydroxyl group and the other of R9 and R10 is
• in
• which R11 is an unsubstituted alkenyl group or an alkyl-substituted alkenyl group, with the proviso that when X is a single bond, R is not a hydrogen atom.