| Autor: |
Nadezhda A. Obraztsova, E.V. Pechnikova, Svetlana V. Kurmaz, E. O. Perepelitsina, Gennadiy V. Shilov, Denis V. Anokhin |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
Materials Today Communications. 4:130-140 |
| ISSN: |
2352-4928 |
| DOI: |
10.1016/j.mtcomm.2015.05.004 |
| Popis: |
Amphiphilic copolymers of N -vinylpyrrolidone and triethylene glycol dimethacrylate, synthesized by radical copolymerization at equimolar and unequimolar brancher and chain transfer agent ratios, as well as their precipitated fractions with given chemical composition and physico-chemical characteristics were applied to produce the new stable nanoscaled macromolecular hybrid structures of C 60 fullerene through spontaneous aggregation of copolymer particles in isopropyl alcohol and C 60 molecules dissolved in toluene. FTIR and electronic absorption spectroscopy data indicate the formation of the macromolecular complex of “guest-host” as a result of the C 60 solubilization by the polymer particles. The electron structure of fullerene was changed rapidly or slowly in this complex due to donor–acceptor interaction depending on copolymer kind in the solution. According to WAXS, the encapsulated fullerene molecularly dispersed in solid copolymer matrix. The dynamic characteristics (diffusion coefficients D t and hydrodynamic radii R h ) of hybrid macromolecular structures in polar media (isopropyl alcohol, water) were determined. Cryo-TEM image shows the core–shell particles of hybrid macromolecular structure; the fullerene particles of about 3 nm size were visible in the core of micellar particles. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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