Photoactive oligomer with D–D′–A–D′–D′′–D′–A–D′–D scaffold for high-efficiency NIR-II phototheranostics

Abstract

A D–D′–A–D′–D′′–D′–A–D′–D type photoactive oligomer (O-BT) based nanoparticles (NPs) were prepared for biomedical application. The O-BT NPs possessed a high extinction coefficient, excellent hyperthermia generation ability, satisfactory NIR-II fluorescence emission, and good batch-to-batch reproducibility, and could be used as high-efficiency phototheranostics for photothermal therapy and NIR-II fluorescence imaging.