Regensburg 2013 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 49: Colloids and Complex Liquids III

CPP 49.3: Vortrag

Freitag, 15. März 2013, 10:15–10:30, H40

Self Assembly in a Magnetic Room Temperature Ionic Liquid (MRTIL) — •Andreas Klee¹, Sylvain Prevost^1,2, and Michael Gradzielski¹ — ¹Stranski Laboratorium für Physikalische und Theoretische Chemie, TU Berlin, Straße des 17. Juni 124, 10623 Berlin, Germany — ²Helmholtz-Zentrum Berlin für Materialien und Energie, Glienicker Straße 100, 14109 Berlin, Germany

Magnetic room-temperature ionic liquids (MRTIL) are a specific class of RTIL where an ion confers a magnetic susceptibility to the liquid, which in turn exhibits a paramagnetic behavior. The first occurrence of this new class of liquid media was discovered in 2004 [1, 2] based on the organic cation 1-butyl-3-methylimidazolium (bmim⁺) and the anion tetrachloroferrate (FeCl₄⁻). Thanks to the high spin FeCl₄⁻, a small magnet is enough to modify the meniscus of the fluid, and stronger macroscopic effects are visible when the surface tension is reduced. MRTIL can be used as a solvent for self assembly of surfactant systems which leads to structures like micelles, liquid crystals, macro- and microemulsions including magnetic properties [3]. New insights into the nature of self assembly by studying these water-free, aprotic systems are expected. [1] S. Hayashi and H. O. Hamaguchi, Chem. Lett., 33, 1590-1591, (2004) [2] S. Hayashi et al., IEEE Trans. Magn., 42, 12-14, (2006) [3] A. Klee, S. Prevost, W. Kunz, R. Schweins, K. Kiefer, M.Gradzielski, Phys. Chem. Chem. Phys., 14, 15355-15360, (2012)