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H+-type and OH--type biological protonic semiconductors and complementary devices.
- Source :
- Scientific Reports; 10/3/32013, p1-7, 7p
- 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<superscript>+</superscript> 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<superscript>+</superscript> and OH- transport has been elusive. Here, H<superscript>+</superscript> and OH- transport is achieved in polysaccharide- based proton wires and devices. A H<superscript>+</superscript>-OH- junction with rectifying behaviour and H<superscript>+</superscript>-type and OH<superscript>-</superscript>-type complementary field effect transistors are demonstrated. We describe these devices with a model that relates H<superscript>+</superscript> 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 [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20452322
- Database :
- Complementary Index
- Journal :
- Scientific Reports
- Publication Type :
- Academic Journal
- Accession number :
- 91663187
- Full Text :
- https://doi.org/10.1038/srep02481