Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 7, Issue 24, Pages 19591-19604Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.9b04686
Keywords
beta-carotene; limonene; eugenol; visible-light irradiation; antibacterial coatings
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Funding
- Slovak Research and Development Agency [APVV-15-0053]
- Ministry of Education, Science, Research and Sport of the Slovak Republic within the scheme Excellent research teams
- French National Research Agency (ANR)
- UPEC
- ICMPE
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This study reports for the first time the use of beta-carotene as a natural photosensitizer for both the cationic photopolymerization and thiol-ene click reactions under visible-light irradiation. In an all-green synthesis approach, this performing dye-based system leads to the cationic and thiol-ene polymerization of bio-based monomers, mono- and di-epoxy limonene, with very high final conversions, and appears as efficient as the common visible-light photosensitizers used in free-radical or cationic photopolymerization, that is, thioxanthone derivatives or camphorquinone. Effective antibacterial and tack-free coatings have been synthesized through the incorporation of a natural antibacterial agent (eugenol) in the limonene-derived polymer network. The antibacterial assays have demonstrated a tremendous effect of the eugenol-containing coatings against the adhesion of Escherichia coli (Gram negative) and Staphylococcus aureus (Gram positive).
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