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Experimental Long-Range Electron Transfer and Molecular Switch
Abstract Long-range electron transfer can be experimentally probed by measurement of the so-called “intervalence transition” which occurs in mixed valence binuclear coordination complexes of the general type M-L-M (M = metal site, L = bridging ligand). Thanks to the synthesis of new compounds, recent examples exhibit clearly resolved bands, allowing a relatively accurate determination of the effective coupling parameter between metal sites. The theoretical calculation of these through-ligand couplings is discussed. For molecular switching, we consider systems in which the bridging ligand L can be modified by an external perturbation, so that ideally it could exist in an “ON” state or an “OFF” state. Several examples, which are in various stages of realization, are presented: control by photonic perturbation with the Twisted Internal Charge Transfer (TICT) effect, control by H+ ion through a pH induced redox reaction, and control by reversible alkaline ion complexation.
Experimental Long-Range Electron Transfer and Molecular Switch
Abstract Long-range electron transfer can be experimentally probed by measurement of the so-called “intervalence transition” which occurs in mixed valence binuclear coordination complexes of the general type M-L-M (M = metal site, L = bridging ligand). Thanks to the synthesis of new compounds, recent examples exhibit clearly resolved bands, allowing a relatively accurate determination of the effective coupling parameter between metal sites. The theoretical calculation of these through-ligand couplings is discussed. For molecular switching, we consider systems in which the bridging ligand L can be modified by an external perturbation, so that ideally it could exist in an “ON” state or an “OFF” state. Several examples, which are in various stages of realization, are presented: control by photonic perturbation with the Twisted Internal Charge Transfer (TICT) effect, control by H+ ion through a pH induced redox reaction, and control by reversible alkaline ion complexation.
Experimental Long-Range Electron Transfer and Molecular Switch
Launay, Jean-Pierre (author)
1993-01-01
8 pages
Article/Chapter (Book)
Electronic Resource
English
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