Visible Light Anthraquinone Functional Phthalocyanine Photoinitiator for Free-Radical and Cationic Polymerizations

Breloy L., Brezova V., Blacha-Grzechnik A., Presset M., Yıldırım M. S. , Yılmaz İ. , ...Daha Fazla

MACROMOLECULES, cilt.53, sa.1, ss.112-124, 2020 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 53 Konu: 1
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1021/acs.macromol.9b01630
  • Sayfa Sayıları: ss.112-124


We report for the first time the synthesis and use of a visible light-sensitive anthraquinone functional phthalocyanine (AQ-ZnPc) in combination with a suitable electron donor (methyldiethanol amine, MDEA), electron acceptor (iodonium salt), or H-donor (thiol derivative, trithiol) as photoinitiating systems for the free-radical and cationic photopolymerization. These unprecedented combinations for the FRP and CP under visible light irradiation promoted high acrylate and epoxy conversions with efficiency comparable to well-known camphorquinone-based photoinitiating systems. As evidenced by electron paramagnetic resonance and laser flash photolysis experiments, AQ-ZnPc acts either as an electron donor via a photoinduced electron transfer pathway with iodonium salt or as a proton/proton-coupled electron transfer promoter when combined with MDEA or a thiol derivative. Moreover, AQ-ZnPc was shown to be very active as a singlet oxygen promoter when introduced in an interpenetrated polymer network for preventing the adhesion and proliferation of bacteria under visible light activation.