pH-responsive supramolecular nanovalves based on cucurbit[6]uril pseudorotaxanes

Sarah Angelos*, Ying Wei Yang, Kaushik Patel, J. Fraser Stoddart, Jeffrey I. Zink

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

410 Scopus citations


An open and closed case: pH-controllable nanovalves that operate in water have been produced by attaching [2]pseudorotaxanes to the surface of mesoporous silica nanoparticles. The nanovalves are able to contain guest molecules (rhodamine B, red circles) within the nanopores at acidic and neutral pH values but release them on command when the pH value is raised (see picture). (Graph Presented).

Original languageEnglish (US)
Pages (from-to)2222-2226
Number of pages5
JournalAngewandte Chemie - International Edition
Issue number12
StatePublished - Mar 7 2008


  • Heterogeneous catalysis
  • Host-guest systems
  • Mesoporous materials
  • Molecular devices
  • Surface chemistry

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis


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