POLYMER, AND CONTRAST AGENT FOR PHOTOACOUSTIC IMAGING, INCLUDING THE POLYMER

摘要

PROBLEM TO BE SOLVED: To provide a polymer having a high tumor/blood ratio.SOLUTION: The present invention provides a polymer represented by the following formula (P1): wherein in the formula (P1), Rrepresents a residue or a functional group derived from a cationic polymerization initiator; L represents a linker and L may not be present; n represents an integer of 1 or more; D represents a dye backbone of a dye having absorption in the near-infrared region; R-Rindependently represent H, or a C1-4 hydrocarbon group; Ris a C1-8 hydrocarbon group or a phenyl group).SELECTED DRAWING: Figure 1