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PET-RAFT Polymerization Catalyzed by Small Organic Molecule under Green Light Irradiation

Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Polymers 2019, 11(5), 892;
Received: 21 March 2019 / Revised: 21 April 2019 / Accepted: 29 April 2019 / Published: 15 May 2019
(This article belongs to the Special Issue Macromolecular Design via Controlled Polymerization)
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Photocatalyzed polymerization using organic molecules as catalysts has attracted broad interest because of its easy operation in ambient environments and low toxicity compared with metallic catalysts. In this work, we reported that 4,7-di(thiophen-2-yl)benzo[c][1,2,5]thiadiazole (DTBT) can act as an efficient photoredox catalyst for photoinduced electron transfer-reversible addition-fragmentation chain transfer (PET-RAFT) polymerization under green light irradiation. Well-defined (co)polymers can be obtained using this technique without any additional additives like noble metals and electron donors or acceptors. The living characteristics of polymerization were verified by kinetic study and the narrow dispersity (Đ) of the produced polymer. Excellent chain-end fidelity was demonstrated through chain extension as well. In addition, this technique showed great potential for various RAFT agents and monomers including acrylates and acrylamides. View Full-Text
Keywords: organic photoredox catalyst; green light; PET-RAFT polymerization organic photoredox catalyst; green light; PET-RAFT polymerization

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Tao, H.; Xia, L.; Chen, G.; Zeng, T.; Nie, X.; Zhang, Z.; You, Y. PET-RAFT Polymerization Catalyzed by Small Organic Molecule under Green Light Irradiation. Polymers 2019, 11, 892.

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