Heterosupramolecular chemistry: Recognition initiated and inhibited silver nanocrystal aggregation by pseudorotaxane assembly

Declan Ryan, S. Nagaraja Rao, Håkan Rensmo, Donald Fitzmaurice*, Jon A. Preece, Sabine Wenger, J. Fraser Stoddart, Nelsi Zaccheroni

*Corresponding author for this work

Research output: Contribution to journalArticle

74 Scopus citations

Abstract

Near size-monodisperse silver nanocrystals stabilized by chemisorption of a mixture of an alkane thiol (85%) and an alkane thiol incorporating a dibenzo-24-crown-8 moiety (15%) have been prepared. Using dynamic light scattering and nuclear magnetic resonance, it is shown that addition of bis-dibenzylammonium dication initiates aggregation of the silver nanocrystal dispersion by pseudorotaxane assembly, it is also shown that addition of excess dibenzylammonium cation or dibenzo-24-crown-8 inhibits further aggregation. This novel demonstration of controlled nanocrystal aggregation points the way toward the programmed assembly of complex nanocrystal architectures in solution.

Original languageEnglish (US)
Pages (from-to)6252-6257
Number of pages6
JournalJournal of the American Chemical Society
Volume122
Issue number26
DOIs
StatePublished - Jul 5 2000

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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