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Updated: Sep 10, 2025

3D Printing and In Situ Surface Modification via Type I Photoinitiated Reversible Addition-Fragmentation Chain Transfer Polymerization
Published on: February 18, 2022
Sunlight-driven photoinduced electron/energy transfer-reversible addition-fragmentation chain transfer polymerization
Zi-Hui Fan1, Wei-Wei Fang1,2, Yi-Xing Liu1
1School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Value-Added Catalytic Conversion and Reaction Engineering, Anhui Province Engineering Research Center of Flexible and Intelligent Material, Hefei University of Technology Hefei Anhui 230009 P. R. China lxia@hfut.edu.cn tanglx@hfut.edu.cn taohe@hfut.edu.cn.
None:
Photoinduced electron/energy transfer-reversible addition-fragmentation chain transfer (PET-RAFT) polymerization is a sustainable and powerful tool to synthesize polymers and copolymers. However, the development of large-scale production and polymerizations using sunlight irradiation remain top challenges for PET-RAFT polymerizations. In this study, conjugated cross-linked phosphine (PPh3-CHCP) was explored as a heterogeneous photocatalyst for efficient PET-RAFT polymerization. This development allowed PET-RAFT processes to achieve high monomer conversions, low dispersity and good chain-end fidelity under a broad range of wavelengths and sunlight irradiation from various monomers. The heterogeneous PPh3-CHCP photocatalyst could be easily separated and reused without obvious structural deterioration or decrease in efficiency. Sunlight-driven photopolymerization of MA (methyl acrylate) was scaled up to 2 L (conversion of 93%), and the obtained polymer showed good control over both molecular weight and dispersity (Đ = 1.13). White light-driven polymerization of MA (conversion of 91%, Đ = 1.27) reached a 6 L scale. These results demonstrate a great potential for industrial applications.
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