Dresden 2011 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

CPP: Fachverband Chemische Physik und Polymerphysik

CPP 6: Charged Soft Matter

CPP 6.1: Vortrag

Montag, 14. März 2011, 14:00–14:15, ZEU 160

Charge transport and glassy dynamics in confined neat and polymerized ionic liquids — •Joshua Sangoro, Ciprian Iacob, Wycliffe Kipnusu, and Friedrich Kremer — Institute of Experimental Physics I, University of Leipzig, Leipzig, Germany

Charge transport and glassy dynamics in neat and polymerized ionic liquids under one- and two- dimensional confinement are investigated in a wide frequency and temperature ranges by a combination of Broadband Dielectric Spectroscopy (BDS) and Pulsed Field Gradient Nuclear Magnetic Resonance (PFG NMR) [1-2]. By applying the Einstein-Smoluchowski relations to the dielectric spectra, diffusion coefficients are obtained in quantitative agreement with independent PFG NMR. The impact of geometrical confinement as well as the pore wall-ionic liquid interactions on the overall ionic mobility is explored for diverse categories of ionic liquids. The results are discussed within the framework of glassy dynamics assisted charge transport in ionic liquids.

References

[1] Iacob, C., Sangoro, J. R., Papadopoulos, P., Schubert, T., Naumov, S., Valluilin, R., Kärger, J. and Kremer, F. (2010). Phys. Chem. Chem. Phys., 12, 13798-13803.

[2] Sangoro, J. R., Iacob, C., Serghei, A., Friedrich, C., and Kremer, F. (2009) Phys. Chem. Chem. Phys., 11 (5) 913; Krause, C., Sangoro, J.R., Iacob, C. and Kremer, F. (2010) J. Phys. Chem. B, 114, 382-386; Sangoro, J.R., Iacob, C., Serghei, A., Naumov, S., Galvosas, P., Kärger, J., Wespe, C., Bordusa, F., Stoppa, A., Hunger, J., Buchner, R., and Kremer, F. (2008) J. Chem. Phys., 128 (21) 214509.