Patent ID: 7388110

Claim:
A fluorescent monomer compound represented by the following formula (1): wherein: Q, Q′ and D 3 may be the same or different, may be combined together into a fused ring, and are each a substituent selected from the group consisting of a hydrogen atom, a halogen atom, a hydroxyl group, and substituted or unsubstituted alkyl, acyl, oxyalkyl, carboxyl, carboxylate ester, carboxamido, cyano, nitro, amino and aminoalkyl groups; and D 1 , D 2 and D 4 each represent a substituent, wherein at least one of D 1 , D 2 and D 4 is a substituent group comprising a vinyl group at an end thereof, and wherein the substituent group comprising a vinyl group at an end thereof enables the fluorescent monomer compound to be soluble in water, and the substituent group comprising a vinyl group at an end thereof is represented by the following formula (2) or formula (3): wherein: X in formula (2) is a substituent group selected from the group consisting of —COO—, —OCO—, —CH 2 NR—, —CH 2 S—, —CH 2 O—, —NR—, —NRCO—, —CONR—, —SO 2 NR—, —NRSO 2 —, —O—, —S—, —SS—, —NRCOO—, —OCONR— and —CO—; and X in formula (3) represents a C1 to C30 alkylene group comprising at least one substituent group selected from the group consisting of —COO—, —OCO—, —CH 2 NR—, —NR—, —NRCO—, —CONR—, —SO 2 NR—, —NRSO 2 —, —O—, —S—, —SS—, —NRCOO—, —OCONR— and —CO—, in which R represents a hydrogen atom or a substituted or unsubstituted alkyl group, Y is a substituted or unsubstituted, divalent, organic residual group containing a structure represented by the following formula (4) or formula (5): wherein n is from 2 to 5, j is from 1 to 5, m is from 1 to 200, and Y′ and Y″ may be the same or different and are each a hydrogen atom or an alkyl group, and Z represents —O— or —NR″—, and R″ represents a hydrogen atom or a substituted or unsubstituted alkyl group.