Projects per year
Abstract
Multihydroxy-anthraquinone derivatives [i.e., 1,2,4-trihydroxyanthraquinone (124-THAQ), 1,2,7-trihydroxyanthraquinone (127-THAQ), and 1,2,5,8-tetrahydroxyanthraquinone (1258-THAQ)] can interact with various additives [e.g., iodonium salt, tertiary amine, N-vinylcarbazole, and 2-(4-methoxystyryl)-4,6-bis(trichloromethyl)-1,3,5-triazine] under household green LED irradiation to generate active species (cations and radicals). The relevant photochemical mechanism is investigated using quantum chemistry, fluorescence, cyclic voltammetry, laser flash photolysis, steady state photolysis, and electron spin resonance spin-trapping techniques. Furthermore, the multihydroxy-anthraquinone derivative-based photoinitiating systems are capable of initiating cationic photopolymerization of epoxides or divinyl ethers under green LED, and the relevant photoinitiation ability is consistent with the photochemical reactivity (i.e., 124-THAQ-based photoinitiating system exhibits highest reactivity and photoinitiation ability). More interestingly, multihydroxy-anthraquinone derivative-based photoinitiating systems can initiate free radical crosslinking or controlled (i.e., reversible addition−fragmentation chain transfer) photopolymerization of methacrylates under green LED. It reveals that multihydroxy-anthraquinone derivatives can be used as versatile photoinitiators for various types of photopolymerization reactions.
Original language | English |
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Article number | 1800172 |
Number of pages | 6 |
Journal | Macromolecular Rapid Communications |
Volume | 39 |
Issue number | 19 |
DOIs | |
Publication status | Published - Oct 2018 |
Externally published | Yes |
Keywords
- DFT calculations
- green LED
- multihydroxy-anthraquinone derivatives
- photoinitiator
- photopolymerization
Projects
- 1 Finished
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ARC Centre of Excellence for Electromaterials Science
Wallace, G., Forsyth, M., Macfarlane, D., Officer, D., Cook, M. J., Dodds, S., Spinks, G., Alici, G., Moulton, S., in het Panhuis, M., Kapsa, R. M. I., Higgins, M., Mozer, A., Crook, J., Innis, P., Coote, M. L., Wang, X., Howlett, P. C., Pringle, J. M., Hancock, L., Paull, B., Sparrow, R., Zhang, J., Spiccia, L., Diamond, D., Guldi, D., Kim, S. J., Unwin, P. & Watanabe, M.
Australian Research Council (ARC)
30/06/14 → 30/06/21
Project: Research