Dispersion of multi-walled carbon nanotubes with pyrene-functionalized polymeric micelles in aqueous media
| Autor: | Petar Petrov, Georgi L. Georgiev, Axel H. E. Müller |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
Polymers and Plastics Scanning electron microscope Organic Chemistry technology industry and agriculture macromolecular substances Carbon nanotube Photochemistry Micelle law.invention chemistry.chemical_compound chemistry Dynamic light scattering law Transmission electron microscopy Materials Chemistry Proton NMR Pyrene Absorption (chemistry) |
| Zdroj: | Polymer. 53:5502-5506 |
| ISSN: | 0032-3861 |
| DOI: | 10.1016/j.polymer.2012.09.046 |
| Popis: | Polymeric micelles with pendent pyrene groups form complexes with multi-walled carbon nanotubes (MWNTs) by π-stacking and, thus, are able to disperse the tubes in water. Evidence is given by cryogenic transmission electron microscopy, scanning electron microscopy and atomic force microscopy. “Pluronic F38” (PEO-PPO-PEO) micelles with pendent pyrene groups were obtained via UV-induced crosslinking of pentaerythritol tetraacrylate within the micellar core. The pyrene moieties were attached to the periphery of the micelles via reacting OH-groups of F38 with pyrenebutyric acid. Stabilized polymeric micelles of different pyrene content (4, 6 and 9 mol% degree of substitution) were characterized by proton NMR, UV–Vis absorption and fluorescence spectroscopies and dynamic light scattering. |
| Databáze: | OpenAIRE |
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