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

Masumi Asakawa, Peter R. Ashton, Vincenzo Balzani*, Alberto Credi, Gunter Mattersteig, Owen A. Matthews, Marco Montalti, Neil Spencer, J. Fraser Stoddart, Margherita Venturi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

181 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)1992-1996
Number of pages5
JournalChemistry - A European Journal
Volume3
Issue number12
DOIs
StatePublished - Jan 1 1997

Keywords

  • Cyclic voltammetry
  • Logic gates
  • Molecular devices
  • Pseudorotaxanes
  • Spectroelectrochemistry

ASJC Scopus subject areas

  • Chemistry(all)

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