A new molecular switch: redox-driven translocation mechanism of the copper cation

We report the synthesis of a novel molecular switch based on a double-stranded ditopic ligand which operates through the CuII/CuI couple; the mononuclear cuprous and cupric complexes were characterised by absorption spectrophotometry; reversible motion of the copper ion between the two binding sites is driven by an auxiliary oxidation and reduction reaction; the rate-limiting steps of this translocation process were determined as well as the corresponding kinetic parameters.

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