Journal
MACROMOLECULES
Volume 53, Issue 1, Pages 112-124Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.9b01630
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Funding
- French National Research Agency (ANR)
- UPEC
- ICMPE
- Ministry of Education, Science, Research and Sport of the Slovak Republic
- Slovak Research and Development Agency [APVV-15-0053]
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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.
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