Polymer(Korea), Vol.43, No.4, 496-502, July, 2019
Phenothiazine Derivative as Organic Photocatalyst for Metal Free Atom Transfer Radical Polymerization
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A novel organic photocatalyst, 4-(10H-phenothiazin-10-yl)-N,N-diphenylaniline (PDPA) has been successfully synthesized from triphenylamine and phenothiazine moiety via Buchwald-Hartwig C-N coupling. The chemical structure of catalyst was characterized via proton nuclear magnetic resonance (1H NMR) and the optical properties were investigated via UV-vis spectroscopy. The PDPA has been applied as an organic photocatalyst for metal free atom transfer radical polymerization (O-ATRP). The well-controlled molecular weights of polymethacrylates have been obtained with high yield of 95% and narrow polydispersity index (đ).
Keywords:phenothiazine;organic photocatalyst;metal-free atom transfer radical polymerization;Buchwald-Hartwig C-N coupling;methacrylate monomers
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