Dresden 2017 – wissenschaftliches Programm
CPP 61.2: Vortrag
Donnerstag, 23. März 2017, 15:15–15:30, ZEU 114
Molecular Dynamics and Charge Transport in Polymeric Ionic Liquids — •Falk Frenzel1, Jiayin Yuan2, Pia Borchert3, Veronica Strehmel3, and Friedrich Kremer1 — 1Universität Leipzig — 2MPI Potsdam - Golm — 3Hochschule Niederrhein Krefeld
After a remarkable evolution over the last 30 years, nowadays Ionic Liquids (ILs) play an essential role in a wide variety of application areas, as in chemical industry, medicine, and even space technology. However, their low viscosity often excludes them as macroscopic stable components, for instance, in battery electrolytes or gas separator membranes. In order to overcome this constraint (and to satisfy the processing industry) the outstanding features of neat ILs are combined with the well controllable macroscopic properties of polymers, which leads to a novel class of materials known as Polymeric Ionic Liquids (PILs). Although PILs have already demonstrated remarkable performance in electrochemical devices (as in dye-sensitized solar-cells, actuators, or field effect transistors), most fundamental properties are basically not yet understood. In the current study, the chemical structure of PILs is systematically varied and, on the other hand, the measurement techniques of Broadband Dielectric Spectroscopy (BDS), Transmission Electron Microscopy (TEM) as well as Differential Scanning (DSC) and AC-Chip Calorimetry are strategically employed. Hence, one is able to investigate the underlying charge transport mechanism(s), molecular dynamics, polarization effects, and mesoscopic structures in PILs in detail.