Diketopyrrolopyrrole-Au(I) as singlet oxygen generator for enhanced tumor photodynamic and photothermal therapy

Diketopyrrolopyrrole (DPP) derivatived photosensitizers (PSs) with near infrared (NIR) absorption and good photophysical properties have drawn tremendous attention in cancer phototherapy. However, current DPP derivatives present unsatisfactory quantum yield of singlet oxygen (1O2) due to the large energy gap between the excited singlet and triplet states. To tackle this challenge, herein the DPP core is functionalized with...