Molecular redox switches based on chemical triggering of iron translocation in triple-stranded helical complexes
Article Abstract:
In a helical metal complex with three strands, iron (III) binds to the outer hydroxamate site while iron (II) prefers the inner bipyridyl site. The strands in the free ligand are randomly arranged but the addition of an iron atom to the complex twists the strands depending on the binding site. During redox reactions the atom switches sites in the molecule to form isomers of the compound with different spectral properties and color. These molecular switchings can be controlled by external stimuli and are similar to electric switches.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
Molecular control over Au/GaAs diodes
Article Abstract:
It is demonstrated that molecules can control electrical properties of conventional metal-semiconductor junctions without electrons having to be transferred onto and through molecules. Diodes were modified by adsorbing molecules onto single crystals of n-type GaAs semiconductor. Diodes were produced with an effective barrier height controlled by the dipole moment of the molecule.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
User Contributions:
Comment about this article or add new information about this topic:
Controlled surface charging as a depth-profiling probe for mesoscopic layers
Article Abstract:
A method for examining the structure of material layers which vary in depth on a nanometre scale is presented. A novel technique for using X-ray photoelectron spectroscopy to profile depth simply is described.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2000
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Coyotes as sentinels for monitoring bovine tuberculosis prevalence in white-tailed deer. Fence-line contact between wild and farmed cervids in Colorado: potential for disease transmission
- Abstracts: Alarm calling in yellow-bellied marmots: I. The meaning of situationally variable alarm calls. Alarm calling in yellow-bellied marmots: II. The importance of direct fitness
- Abstracts: Conflict monitoring versus selection-for-action in anterior cingulate cortex. Spatial working memory in humans as revealed by PET
- Abstracts: Neutron scattering from magnetic excitations in Bi2Sr2CaCu2O8+delta. Quantum magnetic excitations from stripes in copper oxide superconductors
- Abstracts: Woodpigeons nesting in association with hobby falcons: advantages and choice rules. Assessing the degree of association in groups of animals using the concept of entropy