Heteroatom‐Doped Carbon Dots (CDs) as a Class of Metal‐Free Photocatalysts for PET‐RAFT Polymerization under Visible Light and Sunlight |
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| Authors: | Jingjie Jiang Prof. Gang Ye Zhe Wang Yuexiang Lu Prof. Jing Chen Prof. Krzysztof Matyjaszewski |
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| Affiliation: | 1. Collaborative Innovation Center of Advanced Nuclear Energy Technology, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, China;2. Beijing Key Lab of Radioactive Waste Treatment, Tsinghua University, Beijing, China;3. Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA |
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| Abstract: | A key challenge of photoregulated living radical polymerization is developing efficient and robust photocatalysts. Now carbon dots (CDs) have been exploited for the first time as metal‐free photocatalysts for visible‐light‐regulated reversible addition–fragmentation chain‐transfer (RAFT) polymerization. Screening of diverse heteroatom‐doped CDs suggested that the P‐ and S‐doped CDs were effective photocatalysts for RAFT polymerization under mild visible light following a photoinduced electron transfer (PET) involved oxidative quenching mechanism. PET‐RAFT polymerization of various monomers with temporal control, narrow dispersity (?≈1.04), and chain‐end fidelity was achieved. Besides, it was demonstrated that the CD‐catalyzed PET‐RAFT polymerization was effectively performed under natural solar irradiation. |
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| Keywords: | carbon dots photocatalysts RAFT RDRP |
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