Visible light-assisted organocatalyzed atom transfer radical polymerization (ATRP) using BODIPY photocatalysts Rahul Maurya and Dr. Debaprasad Mandal * Indian Institute of Technology Ropar, India Controlled radical polymerization (CRP) methods have been attestant to great development in the last two decades it has achieved great success in the preparation of very diverse, well-controlled polymeric material. Indeed, several sets of methods allow the synthesis of polymers with various architectures and compositions, controlled molecular weight (MW), and low molecular weight dispersity (Ð). Among the different CRP techniques, ATRP plays an important role due to its simplicity and versatility in the polymerization of an immense variety of monomers under mild reaction conditions. The catalysts of ATRP are mostly metal-based catalysts including Ru, Mo, Cu, and so on. These catalysts are expensive and toxic and leave residues in the polymers, greatly limiting their applications in biological tissues and medical and precision electronic components. For addressing this problem, organocatalyzed ATRP has attracted great attention. In some cases, organic catalysts have been proven to be even more effective than metal-based catalysts.
In discussing here, a BODIPY-based Photocatalyst utilized their property in the ATRP for the polymerization of acrylate-based monomers, to the best of our knowledge this is the first study that utilized the property of BODIPY for ATRP. BODIPY-based organocatalyzed ATRP follows the reductive quenching pathway, BODIPY-based photocatalysts are able to control the Mn and Ð value that is polymerized in a controlled manner by varying the catalyst loading and minimizing the catalyst loading. We could successfully lower the catalyst loading up to 5 ppm for the polymerization of MMA, and also done the polymerization of a few challenging monomers like styrene and n-butyl acrylate in a controlled manner. References 1. Szczepaniak K, R. Martinez, and K.Matyjaszewski; Angew. Chem. Int. Ed . 2023 , e202217658 2. Garret M. Miyake Chem. Rev. 2022 , 122, 1830−1874 3. Liu, and Z.Chen , Angew. Chem. Int. Ed. 2021 , 60, 10983 – 1099 4. Qiang Ma, Xun Zhang, Li Jia, and Saihu Liao. Polym. Chem 2019 , 10, 6662–666 5. Gorkem Yilmaz and Yusuf Yagci . Polym. Chem., 2018, 9, 1757–1762
P84
© The Author(s), 2023
Made with FlippingBook Learn more on our blog