A Chemically and Electrochemically Switchable [2]Catenane Incorporating a Tetrathiafulvalene Unit

A mechanical switch in a [2]catenane, made up of a cyclobis(paraquat‐p‐phenylene) tetracation interlocked with a macrocyclic polyether containing a redox‐active tetrathiafulvalene (TTF) unit and a 1,5‐dioxynaphthalene ring system, can be thrown either chemically or electrochemically. The neutral TTF...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 1998-02, Vol.37 (3), p.333-337
Main Authors: Asakawa, Masumi, Ashton, Peter R., Balzani, Vincenzo, Credi, Alberto, Hamers, Christoph, Mattersteig, Gunter, Montalti, Marco, Shipway, Andrew N., Spencer, Neil, Stoddart, J. Fraser, Tolley, Malcolm S., Venturi, Margherita, White, Andrew J. P., Williams, David J.
Format: Article
Language:English
Subjects:
Catenanes
Charge transfer complexes
Molecular devices
Redox switching
Self-assembly
Supramolecular chemistry
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Summary:A mechanical switch in a [2]catenane, made up of a cyclobis(paraquat‐p‐phenylene) tetracation interlocked with a macrocyclic polyether containing a redox‐active tetrathiafulvalene (TTF) unit and a 1,5‐dioxynaphthalene ring system, can be thrown either chemically or electrochemically. The neutral TTF unit resides “inside” the tetracationic cyclophane in the reduced state and “alongside” it in the oxidized species (TTF+/ TTF2+). Switching between the reduced (I4+) and oxidized state (I5+(I6+)) is accompanied by a dramatic color change.
ISSN:1433-7851
1521-3773
DOI:10.1002/(SICI)1521-3773(19980216)37:3<333::AID-ANIE333>3.0.CO;2-P