A novel solid state photocatalyst for living radical polymerization under UV irradiation
AuthorFu, Q; McKenzie, TG; Ren, JM; Tan, S; Nam, E; Qiao, GG
Source TitleScientific Reports
PublisherNature Publishing Group: Open Access Journals - Option C
University of Melbourne Author/sMcKenzie, Thomas; Ren, Jing; Qiao, Greg; Fu, Qiang; Tan, Shereen; NAM, EUN HYUNG
AffiliationChemical and Biomolecular Engineering
Research, Innovation and Commercialisation
Document TypeJournal Article
CitationsFu, Q., McKenzie, T. G., Ren, J. M., Tan, S., Nam, E. & Qiao, G. G. (2016). A novel solid state photocatalyst for living radical polymerization under UV irradiation. Scientific Reports, 6 (1), https://doi.org/10.1038/srep20779.
Access StatusOpen Access
ARC Grant codeARC/FT110100411
This study presents the development of a novel solid state photocatalyst for the photoinduced controlled radical polymerization of methacrylates under mild UV irradiation (λmax ≈ 365 nm) in the absence of conventional photoinitiators, metal-catalysts or dye sensitizers. The photocatalyst design was based on our previous finding that organic amines can act in a synergistic photochemical reaction with thiocarbonylthio compounds to afford well controlled polymethacrylates under UV irradiation. Therefore, in the current contribution an amine-rich polymer was covalently grafted onto a solid substrate, thus creating a heterogeneous catalyst that would allow for facile removal, recovery and recyclability when employed for such photopolymerization reactions. Importantly, the polymethacrylates synthesized using the solid state photocatalyst (ssPC) show similarly excellent chemical and structural integrity as those catalysed by free amines. Moreover, the ssPC could be readily recovered and re-used, with multiple cycles of polymerization showing minimal effect on the integrity of the catalyst. Finally, the ssPC was employed in various photo-"click" reactions, permitting high yielding conjugations under photochemical control.
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