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New fully polymeric proton solvents with high proton mobility

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons48692

Scharfenberger,  G.
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons48424

Meyer,  Wolfgang H.
MPI for Polymer Research, Max Planck Society;

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Zitation

Herz, H. G., Kreuer, K. D., Maier, J., Scharfenberger, G., Schuster, M. F. H., & Meyer, W. H. (2003). New fully polymeric proton solvents with high proton mobility. Electrochimica Acta, 48(14-16), 2165-2171.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-61CF-1
Zusammenfassung
The preparation and characterisation of fully polymeric-bound heterocycles as proton solvents is presented. Two different types of polymers are prepared: Polystyrene with imidazole terminated flexible side chains and benzimidazole covalently bonded to an inorganic SiO2 network by a flexible spacer. High proton conductivities of up to 7 x 10-4 S cm-1 at 200 °C have been obtained for these polymers in the absence of water. The presence of protonic charge carriers (protonated and deprotonated heterocycles) is a result of self-dissociation and the proton conductance is suggested to occur via intermolecular proton transfer and structural reorganisation within a dynamical hydrogen bond network formed by the aggregation of the terminating heterocycles. (C) 2003 Elsevier Science Ltd. All rights reserved.