Electron transfer in dextran probed by longitudinal field muon spin relaxation

Telling, MTF; Kilcoyne, SH

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.

Citation

Telling, M., & Kilcoyne, S. Electron transfer in dextran probed by longitudinal field muon spin relaxation. Journal of Physics: Condensed Matter, 19(2), https://doi.org/10.1088/0953-8984/19/2/026221

• Journal Article Type: Article
• Deposit Date: Sep 23, 2010
• Journal: Journal of Physics Condensed Matter
• Print ISSN: 0953-8984
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 19
• Issue: 2
• DOI: https://doi.org/10.1088/0953-8984/19/2/026221
• Publisher URL: http://dx.doi.org/10.1088/0953-8984/19/2/026221