Bis-polyethylene glycol-functionalized imidazolium ionic liquids: A multi-method approach towards bulk and surface properties

Seidl V, Bosch M, Paap U, Livraghi M, Zhai Z, Wick C, Koller TM, Wasserscheid P, Maier F, Smith AS, Bachmann J, Steinrück HP, Meyer K (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Journal of Ionic Liquids Elsevier

Original Authors: Vera Seidl, Michael Bosch, Ulrike Paap, Mattia Livraghi, Ziwen Zhai, Christian R. Wick, Thomas M. Koller, Peter Wasserscheid, Florian Maier, Ana-Sunčana Smith, Julien Bachmann, Hans-Peter Steinrück, Karsten Meyer

Book Volume: 2

Pages Range: 100041

Article Number: 100041

Issue: 2

DOI: 10.1016/j.jil.2022.100041

Abstract

Adding to the versatile class of ionic liquids, we report a new series of hydrophilic polyethylene glycol-functionalized room-temperature ionic liquids, offering interesting thermo- and electrochemical behavior as well as remarkable surface properties. A scalable and generally applicable synthetic procedure for the preparation of N,N’-bis(polyethylene glycol)imidazolium salts, generally abbreviated as [(mPEGn)2Im][A] (n = 2‒6, A = I‒, OMs‒, PF6‒, NTf2‒) was developed. These ionic liquids were studied concerning their thermo- and electrochemical properties, such as phase transition behavior, decomposition temperature, viscosity, and density, as well as electrical conductivity and electrochemical stability, using i.a. differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), electrochemical impedance spectroscopy (EIS) and linear sweep voltammetry (LSV). Additionally, the surface properties were investigated by angle-resolved X-ray photoelectron spectroscopy (ARXPS) and the pendant drop method. olecular dynamics simulations complement the studies and provide insight into the molecular structure of the ionic liquids and their specific orientation at the liquid-vacuum interface.

Authors with CRIS profile

Vera Seidl Lehrstuhl für Anorganische und Allgemeine Chemie Michael Bosch Lehrstuhl für Chemistry of thin film materials Ulrike Paap Lehrstuhl für Physikalische Chemie II Mattia Livraghi Physics Underlying Life Science Ziwen Zhai Institute of Advanced Optical Technologies - Thermophysical Properties (AOT-TP) Christian Wick Physics Underlying Life Science Thomas Manfred Koller Institute of Advanced Optical Technologies - Thermophysical Properties (AOT-TP) Peter Wasserscheid Lehrstuhl für Chemische Reaktionstechnik Florian Maier Lehrstuhl für Physikalische Chemie II Ana-Suncana Smith Physics Underlying Life Science Julien Bachmann Lehrstuhl für Chemistry of thin film materials Hans-Peter Steinrück Lehrstuhl für Physikalische Chemie II Karsten Meyer Lehrstuhl für Anorganische und Allgemeine Chemie

How to cite

APA:

Seidl, V., Bosch, M., Paap, U., Livraghi, M., Zhai, Z., Wick, C.,... Meyer, K. (2022). Bis-polyethylene glycol-functionalized imidazolium ionic liquids: A multi-method approach towards bulk and surface properties. Journal of Ionic Liquids, 2, 100041. https://doi.org/10.1016/j.jil.2022.100041

MLA:

Seidl, Vera, et al. "Bis-polyethylene glycol-functionalized imidazolium ionic liquids: A multi-method approach towards bulk and surface properties." Journal of Ionic Liquids 2 (2022): 100041.

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