Bromo-Substituted Diketopyrrolopyrrole Derivative with Specific Targeting and High Efficiency for Photodynamic Therapy

Abstract

Novel photosensitizers with high reactive oxygen species generation and precise targeting to tumors are crucial for photodynamic therapy (PDT). Here, a bromo-substituted diketopyrrolopyrrole derivative (2,5-bis(6-bromohexyl)-3,6-bis(5-bromothiophene-2-yl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione)-grafted hyaluronic acid is synthesized, which presents excellent targeting and PDT efficiency both in vitro and in vivo.