NIR‐II‐Excited Type‐I Conjugated Polymer Photosensitizer for Cancer Photodynamic Therapy

-to-ROS conversion. As a result, PNT-PFT NPs efficiently generated ROS and achieved 89.3% tumor inhibition in 4T1 models under low-power 1064 nm irradiation. This study not only offers a general guideline for tailoring NIR-II-excited Type-I PSs via through-space CT in linked donor-acceptor pairs but also provides mechanistic insights into Type-I PS design.