%0 Journal Article
%T Far-Red Light-Induced Reversible Addition¨CFragmentation Chain Transfer Polymerization Using a Man-Made Bacteriochlorin
%J -
%D 2019
%R https://doi.org/10.1021/acsmacrolett.9b00320
%X To overcome the challenge of photoregulated living radical polymerization in long-wavelength radiation, a photoinduced electron transfer reversible addition¨Cfragmentation chain transfer (PET-RAFT) polymerization in far-red wavelength (¦Ëmax = 740 nm) is reported by using a man-made bacteriochlorin as a photocatalyst. A reduced tetraphenylporphyrin (RTPP) having a natural bacteriochlorin macrocycle ring with two reduced pyrrole rings was synthesized with strong absorption in the far-red light region (700¨C765 nm) and applied for the PET-RAFT polymerization as a photoredox catalyst, which offered excellent control over molecular weight and polydispersities and oxygen tolerance for the polymerization of (methyl) acrylates monomers, and exhibited attractive features of ¡°living¡± radical polymerization. Benefiting from high penetration of far-red light, the polymerization was also well-controlled when the reaction vessel was covered by translucent animal tissue barriers, for example, skin
%U https://pubs.acs.org/doi/10.1021/acsmacrolett.9b00320