A [2]pseudorotaxane-based molecular machine: Reversible formation of a molecular loop driven by electrochemical and photochemical stimuli

Woo Sung Jeon, Albina Y. Ziganshina, Jae Wook Lee, Young Ho Ko, Jin Koo Kang, Chongmok Lee, Kimoon Kim

Research output: Contribution to journalArticlepeer-review

170 Scopus citations

Abstract

Picking up the thread: A large, reversible change in size as well as shape is observed in a [2]pseudorotaxane-based molecular machine composed of cucurbit[8]uril (CB[8]; bead) and a hexamethylene-bridged bisviologen (thread, see schematic representation) on application of external stimuli. The key feature of the machinelike behavior is the reversible formation of a molecular loop by intramolecular pairing of the terminal viologen radical cation units inside CB[8] upon electrochemical or photochemical reduction.

Original languageEnglish
Pages (from-to)4097-4100
Number of pages4
JournalAngewandte Chemie - International Edition
Volume42
Issue number34
DOIs
StatePublished - 5 Sep 2003

Keywords

  • Electrochemistry
  • Molecular devices
  • Photochemistry
  • Rotaxanes
  • Supramolecular chemistry

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