The authors are indebted to Dr. Catherine Renard for her kind help with setting up the conductivity measurements and to Drs. Jacques Courtieu and Denis Merlet for fruitful discussions concerning the fluorine NMR experiments.
Ionic Conductivity of Lithium Salt/Oligo(ethylene oxide)-Based Liquid-Crystal Mixtures: The Effect of Molecular Architecture on the Conduction Process†
Article first published online: 11 MAR 2005
Copyright © 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Volume 17, Issue 6, pages 723–727, March, 2005
How to Cite
Judeinstein, P. and Roussel, F. (2005), Ionic Conductivity of Lithium Salt/Oligo(ethylene oxide)-Based Liquid-Crystal Mixtures: The Effect of Molecular Architecture on the Conduction Process. Adv. Mater., 17: 723–727. doi: 10.1002/adma.200400788
- Issue published online: 11 MAR 2005
- Article first published online: 11 MAR 2005
- Manuscript Accepted: 1 NOV 2004
- Manuscript Received: 18 MAY 2004
- Block copolymers;
- Liquid crystals, nematic;
- Polymer electrolytes
Thermotropic nematic electrolytes are obtained by dissolving lithium salts within nematogens bearing poly(ethylene oxide) (PEO) chains located either at the termini or in the middle of the rigid nematogen cores (see Figure). The ionic conductivity is enhanced for alkali salt/liquid crystal mixtures with short terminal PEO chains. Self-diffusion coefficients of the mobile species and the fluorine–fluorine dipolar couplings are determined by NMR, and provide insight into the ionic conductivity mechanism.