Building Molecular Machines on Surfaces

Silvi, Serena; Venturi, Margherita

doi:10.1002/9780470552704.ch17

Cited by 2 publications

(1 citation statement)

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“…Despite the exponentially increasing amount of research in the field of molecular machines over the last 2 decades, a protocol for the assembly of rotaxanes into useful, ordered arrays is still lacking. A certain degree of organization has been achieved by building into liquid-crystalline phases and MOFs and by attachment to metal surfaces . Because the interaction of pseudorotaxanes with metal ions is not fully explored, we initiated a systematic study aiming at understanding and controlling the supramolecular/coordination chemistry of metal–rotaxane architectures.…”

Section: Introductionmentioning

confidence: 99%

Blue-Colored, Linear Rigid-Axle [2]Pseudorotaxanes: Metal-Binding Properties, Crystal Structures, and Blue/Red Dichroism

Fernando

Mezei

2012

Inorg. Chem.

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Rare blue-colored [2]pseudorotaxanes based on the previously unexplored [N,N'-bis(4-pyridyl)-4,4'-bipyridinium](2+) axle and bis(1,5-naphtho)-32-crown-8 (BN32C8) or bis(1,5-naphtho)-38-crown-10 (BN38C10) wheels have been synthesized and characterized by UV-vis, (1)H NMR spectroscopy, and electrochemistry, and their metal-binding properties toward CdI(2) and HgCl(2) have been studied by optical absorption in solution and X-ray crystallography in the solid state. We report contrasting structures of the same metal and different wheels or the same wheel and different metals. We also show for the first time that a simple metal complex, such as Hg(2)Cl(6)(2-), can induce a blue/red linear dichroism by organizing the [2]pseudorotaxane units into a columnar arrangement in the crystal.

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Section: Introductionmentioning

confidence: 99%