| Autor: |
Scheuermann, R., Tucker, I. M., Dilger, H., Staples, E. J., Ford, G., Fraser, S. B., Beck, B., Roduner, E. |
| Zdroj: |
Langmuir; March 2004, Vol. 20 Issue: 7 p2652-2659, 8p |
| Abstrakt: |
The temperature-dependent variation of local environment and reorientation dynamics of the small amphiphile 2-phenylethanol in lamellar phase dispersions of the dichain cationic surfactants, 2,3-diheptadecyl ester ethoxypropyl-1,1,1-trimethylammonium chloride (DHTAC) and dioctadecyldimethylammonium chloride (DODMAC), and the nonionic surfactant, tetra(ethylene glycol) n-dodecyl ether (C12E4), have been determined using avoided level crossing muon spin resonance spectroscopy (ALC-μSR). For cosurfactant radicals the hydrophobic or hydrophilic character of the surrounding media can be determined from their magnetic resonance signatures. Comparison of the three different bilayer-forming surfactant systems shows that the ALC-μSR technique is able to distinguish both major and subtle differences in the partitioning of the cosurfactant radicals between the different systems. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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