2019年5月28日
Well-Defined Titanium Complex for Free-Radical and Cationic Photopolymerizations under Visible Light and Photoinduction of Ti-Based Nanoparticles
Macromolecules
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- 巻
- 52
- 号
- 10
- 開始ページ
- 3716
- 終了ページ
- 3729
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/acs.macromol.8b02719
A quinoline-derived titanium complex (TiQ) is shown here to possess remarkable photosensitizing properties when treated with an iodonium salt (Iod) to initiate, under visible light irradiation, (i) the free-radical photopolymerization of acrylate monomer in aerated/laminate conditions, (ii) the cationic photopolymerization of epoxy monomer under air, and (iii) the in situ formation of Ti-based nanoparticles (NPs) inside coatings. The photochemical properties of the TiQ/Iod photoinitiating system have been probed by electron paramagnetic resonance, laser flash photolysis, and real-time Fourier transform infrared spectroscopy, which provide an insight into the possible radical/cationic pathways. The microstructural properties of the photosynthesized Ti-based NPs have been investigated by bright-field conventional transmission electron microscopy and high-angle annular dark-field scanning transmission electron microscopy. The macroscopic mechanical properties of the resulting nanocomposite reveal that the generation of these Ti-based NPs in a polyacrylate/polyether blend matrix leads to an increase of mechanical resistance by toughening the matrix.
- リンク情報
- ID情報
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- DOI : 10.1021/acs.macromol.8b02719
- ISSN : 0024-9297
- eISSN : 1520-5835
- ORCIDのPut Code : 59062333
- SCOPUS ID : 85066831925