Light-Driven Rotary Molecular Motors on Gold Nanoparticles

Michael M. Pollard, Matthijs K. J. ter Wiel, Richard A. van Delden, Javier Vicario, Nagatoshi Koumura, Coenraad R. van den Brom, Auke Meetsma, Ben L. Feringa*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

36 Citations (Scopus)
46 Downloads (Pure)

Abstract

We report the synthesis of unidirectional light-driven rotary molecular motors based oil chiral overcrowded alkenes and their immobilisation on the surface of gold nanoparticles through two anchors. Using a combination of (1)H and (13)C NMR, UV/Vis and CD spectroscopy, we show that these motors preserve their photochemical and thermal behaviour after they have been attached to gold nanoparticles. Furthermore, we describe the synthesis of (2)H- and (13)C-labelled derivatives that were used to verify the uni-directionally of the rotary cycle of these motors both in solution and while grafted to gold nanoparticles. Taken together, these data support the conclusion that these motors maintain their unidirectional rotary cycle when grafter to the surface of small (ca. 2 nm) gold nanoparticles. Thus. continuous irradiation of the system under appropriate conditions leads to unidirectional rotation of the upper half of the molecules relative to the entire nanoparticle.

Original languageEnglish
Pages (from-to)11610-11622
Number of pages13
JournalChemistry
Volume14
Issue number36
DOIs
Publication statusPublished - 2008

Keywords

  • circular dichroism
  • molecular devices
  • nanostructures
  • nanotechnology
  • photochemistry
  • LOW-VALENT TITANIUM
  • SELF-ASSEMBLED MONOLAYERS
  • SINGLE STEREOGENIC CENTER
  • ORGANIC SULFUR-COMPOUNDS
  • UNIDIRECTIONAL ROTATION
  • METAL NANOPARTICLES
  • SUPRAMOLECULAR CHEMISTRY
  • THIOCARBONYL YLIDES
  • EXTRUSION PROCESSES
  • OPTICAL-ACTIVITY

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