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Wang, Lei; Fernández-Terán, Ricardo; Zhang, Lei; Fernandes, Daniel L. A.; Tian, Lei; Chen, Hong; Tian, Haining
Angewandte Chemie (International ed.), September 26, 2016, Letnik: 55, Številka: 40Journal Article
For the first time, organic semiconducting polymer dots (Pdots) based on poly(9,9′‐dioctylfluorenyl‐2,7‐diyl)‐co‐(1,4‐benzo‐{2,1′,3} thiadiazole) (PFBT) and polystyrene grafting with carboxyl‐group‐functionalized ethylene oxide (PS‐PEG‐COOH) are introduced as a photocatalyst towards visible‐light‐driven hydrogen generation in a completely organic solvent‐free system. With these organic Pdots as the photocatalyst, an impressive initial rate constant of 8.3 mmol h−1 g−1 was obtained for visible‐light‐driven hydrogen production, which is 5‐orders of magnitude higher than that of pristine PFBT polymer under the same catalytic conditions. Detailed kinetics studies suggest that the productive electron transfer quench of the excited state of Pdots by an electron donor is about 40 %. More importantly, we also found that the Pdots can tolerate oxygen during catalysis, which is crucial for further application of this material for light‐driven water splitting. Organic polymer dots were used as a photocatalyst for visible‐light‐driven hydrogen generation for the first time and showed impressive activity with an initial hydrogen generation rate of 8.3 mmol h−1 g−1 without the assistance of any co‐catalysts. Do=donor.
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