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Abstract
The electrochemical responses from a hybrid biofluid comprising lithium hexafluorophosphate (LiPF<inf>6</inf>) dispersed in a solvent-free myoglobin melt are investigated over an extreme temperature range (30-150°C). Incorporation of LiPF<inf>6</inf> resulted in an approximately 20-fold increase in the conductivity of the biofluid across the entire temperature range. A polaron-type mechanism involving electron hopping from heme-to-heme centers of myoglobin, accompanied by extrinsic Li counter-ion movement, is proposed for the charge-transport kinetics in the solvent-free melt. Significantly, the redox signature of the heme prosthetic group varied systematically and reversibly with temperature, which was consistent with hyperthermophilic unfolding/refolding of the protein structure.
Original language | English |
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Pages (from-to) | 976-981 |
Number of pages | 6 |
Journal | ChemElectroChem |
Volume | 2 |
Issue number | 7 |
DOIs | |
Publication status | Published - 15 Jul 2015 |
Keywords
- Bioconjugate
- Lithium hexafluorophosphate
- Myoglobin
- Solvent-free
- Voltammetry
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Dive into the research topics of 'High-Temperature Electrochemistry of a Solvent-Free Myoglobin Melt'. Together they form a unique fingerprint.Projects
- 2 Finished
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Functional Biomolecular Liquids
Perriman, A. W. (Principal Investigator)
1/10/13 → 30/09/18
Project: Research
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Molten Proteins: synthesis and design of novel biomolecule-based liquid nanomaterials and their application in bionanochemistry
Mann, S. (Principal Investigator)
29/08/11 → 29/08/14
Project: Research