Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 42: Charged Soft Matter, Ionic Liquids and Polyions I
CPP 42.10: Vortrag
Mittwoch, 22. März 2017, 17:45–18:00, ZEU 114
Determination of the optical constants of ionic liquids by ellipsometry — •Xia Wu1, Maren Muntzeck2, Teresa de los Arcos3, Ignacio Giner3, Guido Grundmeier3, René Wilhelm2, and Thorsten Wagner1 — 1Inorganic and analytical chemistry, Department of Chemistry, University of Paderborn, Warburger Straße 100, D-33098, Paderborn, Germany — 2Organic chemistry, Department of Chemistry, University of Paderborn, Warburger Straße 100, D-33098, Paderborn, Germany — 3Technical chemistry, Department of Chemistry, University of Paderborn, Warburger Straße 100, D-33098, Paderborn, Germany
We determined the optical constants (complex refractive index, dispersion and temperature coefficient) of ionic liquids by ellipsometry method mainly in visible range (360 nm - 1000 nm). We focus on the ionic liquids with high refractive indices (n > 1.7) since it is not possible to measure this high index by normal refractometer. We synthesized ionic liquids with such high indices. These high index ionic liquids can be used as index matching liquids in determination of refractive indices of metal oxides inside photonic crystals or porous materials in general. These ionic liquids are particularly suitable for index matching, because they are stable (low vapor pressure) and less toxic than commercial available index matching liquids with equally high indices [1].
Reference: [1] M. Deetlefs, K. R. Seddon, M. Shara, New Journal of Chemistry 30, 317-326 (2006); doi: 10.1039/b513451j