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H+-type and OH- -type biological protonic semiconductors and complementary devices.
- Source :
-
Scientific reports [Sci Rep] 2013 Oct 03; Vol. 3, pp. 2481. Date of Electronic Publication: 2013 Oct 03. - Publication Year :
- 2013
-
Abstract
- Proton conduction is essential in biological systems. Oxidative phosphorylation in mitochondria, proton pumping in bacteriorhodopsin, and uncoupling membrane potentials by the antibiotic Gramicidin are examples. In these systems, H(+) hop along chains of hydrogen bonds between water molecules and hydrophilic residues - proton wires. These wires also support the transport of OH(-) as proton holes. Discriminating between H(+) and OH(-) transport has been elusive. Here, H(+) and OH(-) transport is achieved in polysaccharide- based proton wires and devices. A H(+)- OH(-) junction with rectifying behaviour and H(+)-type and OH(-)-type complementary field effect transistors are demonstrated. We describe these devices with a model that relates H(+) and OH(-) to electron and hole transport in semiconductors. In turn, the model developed for these devices may provide additional insights into proton conduction in biological systems.
Details
- Language :
- English
- ISSN :
- 2045-2322
- Volume :
- 3
- Database :
- MEDLINE
- Journal :
- Scientific reports
- Publication Type :
- Academic Journal
- Accession number :
- 24089083
- Full Text :
- https://doi.org/10.1038/srep02481