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Keywords:

  • container molecules;
  • host–guest systems;
  • molecular recognition;
  • molecular switches;
  • supramolecular chemistry
Thumbnail image of graphical abstract

A molecular basket (see picture) and a molecular tube can be reversibly switched between closed and open forms. In their closed forms, these novel container molecules encapsulate cycloalkanes such as cyclohexane. Their binding capabilities can be completely turned off by the addition of acid. Neutralization with base leads to restoration of the original complexes.