Organic Polymer Dots Based on Star-Shaped Truxene-Core Polymers for Photocatalytic H2O2 Production

Three conjugated polymers consisting of truxene donor units and different acceptor units are synthesized and prepared into polymer dots for photocatalytic H2O2 production, exhibiting performance of over 100 mmol h(-1) g(Pdots)(-1). The best external quantum efficiency is determined to be 8.4% at 450 nm in 60 min which is higher than the majority of conjugated polymeric photocatalysts. Optical properties and surface reaction capabilities of Pdots are studied to understand the origin of the photocatalytic performance. The degradation pathway of Pdots is investigated and explained with the help of various spectroscopic characterizations.