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Electron transfer in dextran probed by longitudinal field muon spin relaxation

Telling, MTF and Kilcoyne, SH 2007, 'Electron transfer in dextran probed by longitudinal field muon spin relaxation' , Journal of Physics Condensed Matter, 19 (2) .

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Abstract

Electron-transfer processes play a crucial role in bio-nanobattery design, the electron transfer rate through the organic material being a key parameter in determining the resistance, maximum current, power density, discharge rate and duty cycle of the cell. The labelled electron method using positive muons allows such transfer processes in macromolecules, such as polymers and proteins, to be probed on a microscopic level. Here we present the results of an experiment using the labelled electron method with longitudinal field muon spin relaxation (LF-μSR) to investigate electron-transfer processes in dextran. The data are well described using the Risch–Kehr model and the results suggest intra-chain diffusion is the dominant transport process in this systembetween 15 and 250 K. Intra-chain diffusion rates of 1013 s−1 have been determined.

Item Type: Article
Themes: Subjects / Themes > Q Science > QC Physics
Subjects outside of the University Themes
Schools: Colleges and Schools > College of Science & Technology
Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering
Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Materials & Physics Research Centre
Journal or Publication Title: Journal of Physics Condensed Matter
Publisher: Institute of Physics
Refereed: Yes
ISSN: 0953-8984
Depositing User: SH Kilcoyne
Date Deposited: 23 Sep 2010 14:38
Last Modified: 20 Aug 2013 16:25
URI: http://usir.salford.ac.uk/id/eprint/10150

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