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Photopolymerization and 3D/4D applications using newly developed dyes: Search around the natural chalcone scaffold in photoinitiating systems
- Source :
- Dyes and Pigments, Dyes and Pigments, Elsevier, 2021, 188, pp.109213. ⟨10.1016/j.dyepig.2021.109213⟩, Dyes and Pigments, 2021, 188, pp.109213. ⟨10.1016/j.dyepig.2021.109213⟩
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Chalcones are well-known natural dyes, 18 different derivatives selected from the rational molecular design (i.e. through molecular orbital calculations) were synthesized. If used in conjunction with an amine (i.e. ethyl l, 4-(dimethylamino) benzoate, EDB) and an iodonium salt (bis(4-tert-butylphenyl) iodonium hexafluorophosphate, Iod) as photoinitiating systems (PISs), these dyes can initiate both the free radical polymerization of polyethylene glycol diacrylate (PEG-diacrylate) and the cationic polymerization of 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate (EPOX) via oxidation–reduction reaction mechanisms. Furthermore, among the 18 different suggested structures, except for dyes 9 and 10, which have been synthesized and used in other fields, the remaining 16 dyes have never been synthesized before. The photopolymerization efficiency of acrylates carried out under LED@405 nm are excellent both for thin films (the thickness is about 0.2 mm) and thick films (the thickness is about 2 mm). Furthermore, all of them can also boost the cationic polymerization of EPOX upon LED irradiation at 405 nm, in the presence of an iodonium salt and an amine. More interestingly, stereoscopic 3D patterns were successfully fabricated by the direct laser write (DLW) technique which demonstrated reversible swelling properties and reversible shape-memory effects induced via swelling and dehydration for the access to 4D printing.
- Subjects :
- [CHIM.MATE] Chemical Sciences/Material chemistry
Reaction mechanism
Chalcone
Process Chemistry and Technology
General Chemical Engineering
Radical polymerization
Cationic polymerization
[CHIM.MATE]Chemical Sciences/Material chemistry
02 engineering and technology
Polyethylene glycol
Natural dyes
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
chemistry.chemical_compound
Photopolymer
chemistry
Hexafluorophosphate
photopolymerization
Polymer chemistry
thermoresponsive and water-responsive reversible shape-memory
Amine gas treating
3D/4D printing
0210 nano-technology
Subjects
Details
- ISSN :
- 01437208
- Volume :
- 188
- Database :
- OpenAIRE
- Journal :
- Dyes and Pigments
- Accession number :
- edsair.doi.dedup.....d0a0ea69056dd8503927081497684c85
- Full Text :
- https://doi.org/10.1016/j.dyepig.2021.109213