Pigment dispersions with polymeric dispersants having pending chromophore groups

A pigment dispersion comprising:

• a color pigment represented by formula (I):
• and
• a polymeric dispersant having, via a linking group covalently linked to its polymeric backbone, at least one pending chromophore group which has a molecular weight smaller than 95% of the molecular weight of the color pigment;
• wherein
• R1 is selected from the group consisting of hydrogen, a halogen atom, a methyl group, an ethyl group, a methoxy group, an ethoxy group, —CF3, —COOH, —COOCH3, and
• R2, R4, and R5 are independently selected from the group consisting of hydrogen, a halogen atom, a methyl group, an ethyl group, a methoxy group, an ethoxy group, —CF3, —COOH, and —COOCH3;
• R3 is selected from the group consisting of hydrogen, a halogen atom, a methyl group, an ethyl group, a methoxy group, an ethoxy group, —CF3, —COOH, —COOCH3, —SO2NH—C6H5, —CONH—C6H5, —CONH—C6H5—CONH2, and —CONH2;
• R6 and R7 are independently selected from the group consisting of hydrogen, a halogen atom, a methyl group, an ethyl group, a methoxy group, an ethoxy group, —CF3, —COOH, and —COOCH3, or R6 and R7 represent the necessary atoms to form an imidazolone ring;
• and
• the pigment dispersion is an inkjet ink and the pigment comprises 0.1 wt % to 20 wt % of the inkjet ink based on a total weight of the inkjet ink.