Journal
RSC ADVANCES
Volume 9, Issue 48, Pages 27789-27799Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ra05831a
Keywords
-
Categories
Funding
- French National Research Agency (ANR) [DS0304, ANR-16-CE07-0016]
- Agence Nationale de la Recherche (ANR) [ANR-16-CE07-0016] Funding Source: Agence Nationale de la Recherche (ANR)
Ask authors/readers for more resources
Although metathesis photoinduced catalysis is now well established, there is little development in thin film preparation using photochemically activated ring-opening metathesis polymerization (ROMP). Herein, a N-heterocyclic carbene (NHC) photogenerator (1,3-bis(mesityl)imidazolium tetraphenylborate) is combined with an inactive metathesis catalyst ([RuCl2(p-cymene)](2)) to generate under UV irradiation an active catalyst (p-cymene)RuCl2 (NHC), that is capable of producing in a single step cross-linked copolymer films by ROMP of norbornene with dicyclopentadiene. The study shows that the photoinitiated catalytic system can be optimized by increasing the yield of photogenerated NHC through a sensitizer (2-isopropylthioxanthone), and by choosing [RuI2(p-cymene)](2) as precatalyst to provide a long-term photolatency. The cross-linked polymer structure is investigated by a range of techniques including gel content measurement, FT-IR and solid-state C-13 NMR spectroscopy, TGA and DSC, which reveal a cross-linking mechanism proceeding through both metathesis and olefin coupling.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available