Molecular engineering to red-shift the absorption band of AIE photosensitizers and improve their ROS generation ability

). The success of this molecular engineering indicates that increasing the number of acceptors is more effective at red-shifting the absorption band of AIE-PSs than increasing the number of donors, and extending the π-conjugation of acceptors will red-shift the absorption-emission band, increase the maximum molar extinction coefficient, and improve the ROS generation ability of AIE-PSs, thus providing a new strategy for the design of advanced AIE-PSs for deep-tissue PDT.