By Paola Ceroni, Alberto Credi, Margherita Venturi
With contributions from the main favourite specialists worldwide, this source offers an available precis of electrochemical concepts and the purposes of electrochemical suggestions to molecular-level structures. It describes crucial electro-active practical supramolecular platforms constructed up to now, together with rotaxanes and catenanes as molecular machines and as parts for info processing; dendrimers as molecular batteries, sensors, mild harvesting antennae, and drug supply platforms; and bio-hybrid units.
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Ed. 2002, 41, 1488. D. T. Bong, T. D. Clark, J. R. Granja, M. R. Ghadiri, Angew. , Int. Ed. 2001, 40, 988. C. A. Nijhuis, B. J. Ravoo, J. Huskens, D. N. Reinhoudt, Coord. Chem. Rev. 2007, 251, 1761. 9. G. A. Jeffrey, An Introduction to Hydrogen Bonding, Oxford University Press, New York, 1997. 10. J. Bu, N. D. Lilienthal, J. E. Woods, C. E. Nohrden, K. T. Hoang, D. Truong, D. K. Smith, J. Am. Chem. Soc. 2005, 127, 6423. 1. 2. 3. 4. 5. 6. 7. 8. REFERENCES 31 11. J. E. Woods, Y. Ge, D. K. Smith, J.
Analysis of the electrochemical data for this system indicates a 200 to 1 preference for the succinamide station in the zero state. This switches to a 2 to 1 preference for the diimide in the À1 state and a 4000 to 1 preference for the diimide in the À2 state. 3 ELECTROCHEMICALLY CONTROLLED H-BONDING o-Quinones In addition to the arylimides, Smith and coworkers also introduced o-quinones, discussed earlier in this chapter, as another example of a redox-dependent H-bonding receptor for neutral guests (Eq.
FeIII prefers the inner compartment, which provides six oxygen donor atoms and retains a triply negative charge; FeII chooses the peripheral compartment consisting of three bpy subunits. Consecutive chemical reduction and oxidation makes the metal move back and forth between the two compartments. 38 MOLECULAR MOTIONS DRIVEN BY TRANSITION METAL REDOX COUPLES On addition of 1 equivalent of FeIII to a MeOH/H2O solution of the ditopic ligand 5, the solution takes a light brown color with formation of a rather intense band centered at 420 nm (e ¼ 2400 MÀ1 cmÀ1).
Electrochemistry of Functional Supramolecular Systems by Paola Ceroni, Alberto Credi, Margherita Venturi