Fluorene-containing compound and method for making the same

A method for making a fluorene-containing compound, comprising the steps of:

• (a) providing a precursor compound having a formula (II)
• (b) providing a first organic compound selected from the group consisting of alkenyl halide, alkylene oxide, an epoxy-containing unsaturated compound, an epoxy-containing alkyl halide, an unsaturated acyl halide, an alkyl-substituted unsaturated acyl halide, an unsaturated carboxylic acid, an alkyl-substituted unsaturated carboxylic acid, halohydrin,
• O═C═N—R4—R5, in which R4 is an alkylene group and R5 is an acrylate group or a methacrylate group, and combinations thereof;
• and
• (c) reacting the precursor compound with the first organic compound in a first solvent to obtain a fluorene-containing compound of formula (III)
• where X2 is O—X1nOH, or —O—R1, in which
• n ranges from 1 to 3,
• X1 is
• in which m ranges from 1 to 4, and each of R2 and R3 is the same or different in each repeating unit m, and is independently a hydrogen atom, an alkyl group, an alkenyl group, or a hydroxyl group, and
• R1 is selected from the group consisting of an alkenyl group, an epoxy-containing group, an unsaturated acyl group, an alkyl-substituted unsaturated acyl group,
• in which p ranges from 1 to 4, and 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.