Electrochemically induced molecular motions in pseudorotaxanes: A case of dual-mode (oxidative and reductive) dethreading

The electrochemical and spectroscopic properties of a pseudorotaxane formed in acetonitrile solution by self-assembly of a wire-type electron donor based on the tetrathiafulvalene unit and the cyclobis(paraquat-p-phenylene) tetracationic electron acceptor have been investigated. We show that a) reve...

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Bibliographic Details
Published inChemistry : a European journal Vol. 3; no. 12; pp. 1992 - 1996
Main Authors Asakawa, M, Ashton, PR, Balzani, Credi, A, Mattersteig, G, Matthews, OA, Montalti, M, Spencer, N, Stoddart, JF, Venturi, M
Format Journal Article
LanguageEnglish
Published WEINHEIM Wiley 01.12.1997
Subjects
Chemistry
Chemistry, Multidisciplinary
Physical Sciences
Science & Technology
TETRATHIAFULVALENE
pseudorotaxanes
MECCANO
spectroelectrochemistry
molecular devices
SENSORS
SUPRAMOLECULAR CHEMISTRY
logic gates
ELECTRON-TRANSFER
CATENANES
cyclic voltammetry
PSEUDOROTAXANE
ROTAXANES
COMPLEXATION
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Summary:The electrochemical and spectroscopic properties of a pseudorotaxane formed in acetonitrile solution by self-assembly of a wire-type electron donor based on the tetrathiafulvalene unit and the cyclobis(paraquat-p-phenylene) tetracationic electron acceptor have been investigated. We show that a) reversible dethreading/rethreading cycles of the pseudorotaxane can be performed by either oxidation and successive reduction of the electron-donor wire or reduction and successive oxidation of the electron-accepting tetracationic cyclophane, and b) because of this special behavior, the input (electrochemical)/output (absorption spectrum) characteristics of this molecular-level system correspond to those of an XNOR logic gate.
ISSN:0947-6539
DOI:10.1002/chem.19970031214