Redox-dependent self-sorting toggles a rotary nanoswitch?
Organic & Biomolecular Chemistry Pub Date: 2015-07-27 DOI: 10.1039/C5OB01041A
Abstract
The pyridine–pyrimidine (py–pym) arm as the moving part of the two-state nanomechanical rotary switch [Cu(1)]+ is toggled reversibly between two stations using one-electron oxidation/reduction. In state I, the arm is attached via Cu+ complexation to a sterically encumbered phenanthroline and in state II to a zinc porphyrin station. Toggling is realised by charging and discharging an external input signal, the ferrocene-appended diimine ligand 2. Addition of 2 leads to formation of the intermolecular complex [Cu(1)(2)]+ paralleled by a move of the py–pym arm to the zinc porphyrin station. Upon oxidation at the ferrocenyl unit, 2+ detaches from [Cu(1)(2)]2+ so that [Cu(1)]+ is formed in state I. Switching was ascertained by NMR, UV-Vis spectroscopy and cyclic voltammetry.
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Journal Name：Organic & Biomolecular Chemistry
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CAS no.: 89640-58-4
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