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Three-state switching in a double-pole change-over nanoswitch controlled by redox-dependent self-sorting

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Abstract

The four-arm nanomechanical switch 1 with four different terminals exhibits two switching arms (contacts A and D) and two distinct stations for binding (contacts B and C). In switching State I, the azaterpyridine arm is intramolecularly coordinated to a zinc(II) porphyrin station (connection A ↔ B) while contact D (a ferrocenylbipyridine unit) and contact C (phenanthroline) remain disconnected. After addition of copper(I) ions (State II) both connections A ↔ B and C ↔ D are established. Upon one-electron oxidation, double-pole change-over switching cleaves both connections A ↔ B & C ↔ D and establishes the new connection A ↔ C (State III). Fully reversible three-state switching (State I → State II → State III → State II → State I) was achieved by adding appropriate chemical and redox stimuli.

Graphical abstract: Three-state switching in a double-pole change-over nanoswitch controlled by redox-dependent self-sorting

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Publication details

The article was received on 28 Jun 2019, accepted on 07 Aug 2019 and first published on 13 Aug 2019


Article type: Paper
DOI: 10.1039/C9OB01456J
Org. Biomol. Chem., 2019, Advance Article
  • Open access: Creative Commons BY-NC license
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    Three-state switching in a double-pole change-over nanoswitch controlled by redox-dependent self-sorting

    S. Gaikwad, M. S. Özer, S. Pramanik and M. Schmittel, Org. Biomol. Chem., 2019, Advance Article , DOI: 10.1039/C9OB01456J

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