Click Chemistry Grafting of Poly(ethylene glycol) Brushes to Alkyne-Functionalized Pseudobrushes
| Autor: | Ostaci, Roxana-Viorela, Damiron, Denis, Grohens, Yves, Léger, Liliane, Drockenmuller, Eric |
|---|---|
| Přispěvatelé: | Laboratoire d'Ingénierie des Matériaux de Bretagne (LIMATB), Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université de Brest (UBO), Ingénierie des Matériaux Polymères - Laboratoire des Matériaux Polymères et des Biomatériaux (IMP-LMPB), Centre National de la Recherche Scientifique (CNRS)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut de Chimie du CNRS (INC), Laboratoire de Physique des Solides (LPS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Doucet, Florian |
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
[CHIM.POLY] Chemical Sciences/Polymers
[CHIM.MATE] Chemical Sciences/Material chemistry Silicon Azides Ellipsometry Methyl methacrylate copolymer Grafting Acetylenic compound Hydrocarbon Water Reactor [CHIM.MATE]Chemical Sciences/Material chemistry Ethylene oxide polymer Polymerization Monomer Catalytic reaction Chemistry Spin [CHIM.POLY]Chemical Sciences/Polymers Scanning probe microscopy Ring cleavage Contact angle Substrate Polymer Alkyne |
| Zdroj: | Langmuir Langmuir, American Chemical Society, 2010, pp.1304-1310 |
| ISSN: | 0743-7463 1520-5827 |
| Popis: | International audience; A versatile method for the grafting of azide-terminated polymer chains to alkyne-functionalized pseudobrushes by the Cu(I)-catalyzed Huisgen 1,3-dipolar cycloaddition has been developed. First, poly[(propargy] methacrylate)-r-(glycidyl methacrylate)-r-(methyl methacrylate)] random copolymers with monomer ratios of respectively 27/27/46, 41/31/28, and 45/55/0 were synthesized by RAFT polymerization. Then, dense alkyne-functionalized pseudobrushes were grafted in melt by thermal ring-opening of the glycidyl groups by the silanols from the silicon substrate. Finally, the grafting of tailor-made α-methoxy-ω-azido-poly(ethylene glycol)s (Mw ∼ 5000, 20000, and 50000 g/mol) by Cu(I)-catalyzed Huisgen 1,3-dipolar cycloaddition was performed in sealed reactors at 60 °C for 72 h using a polymer weight fraction of 10% in tetrahydrofuran and Cu(PPh3)3Br/DIPEA as the catalytic system. Alkyne-functionalized pseudobrushes and poly(ethylene glycol) brushes were characterized by ellipsometry, scanning probe microscopy, and water contact angle measurements. This "grafting-to" approach represents a fast and versatile method to provide thick and homogeneous polymer brushes with a high surface coverage. A major benefit of this strategy is the tunable and versatile tethering of alkyne functionalities to silicon substrates using a straightforward spin-coating procedure. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|