Viologen-templated arrays of cucurbit[7]uril-modified iron-oxide nanoparticles

Farah Benyettou, Katia Nchimi- Nono, Mustapha Jouiad, Yoann Lalatonne, Irena Milosevic, Laurence Motte, John Carl Olsen, NA'Il Saleh, Ali Trabolsi

Research output: Contribution to journalArticle

Abstract

Magnetic and fluorescent assemblies of iron-oxide nanoparticles (NPs) were constructed by threading a violo-gen-based ditopic ligand, DPV2+ , into the cavity of cucurbituril (CB[7]) macrocycles adsorbed on the surface of the NPs. Evidence for the formation of 1:2 inclusion complexes that involve DPV2+ and two CB[7] macrocycles was first obtained in solution by 1H NMR and emission spectroscopy. DPV2+ was found to induce self-assembly of nanoparticle arrays (DPV2 + ⊂CB[7]NPs) by bridging CB[7] molecules on different NPs. The resulting viologen-crosslinked iron-oxide nanoparticles exhibited increased saturation magnetization and emission properties. This facile supramolecular approach to NP self-assembly provides a platform for the synthesis of smart and innovative materials that can achieve a high degree of functionality and complexity and that are needed for a wide range of applications.

Original languageEnglish (US)
Pages (from-to)4607-4613
Number of pages7
JournalChemistry - A European Journal
Volume21
Issue number12
DOIs
StatePublished - Mar 16 2015

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Keywords

  • Microporosity
  • Self-assembly
  • Solid-state fluorescence
  • Superparamagnetic nanoparticles
  • Surface modification

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Benyettou, F., Nchimi- Nono, K., Jouiad, M., Lalatonne, Y., Milosevic, I., Motte, L., Olsen, J. C., Saleh, NAI., & Trabolsi, A. (2015). Viologen-templated arrays of cucurbit[7]uril-modified iron-oxide nanoparticles. Chemistry - A European Journal, 21(12), 4607-4613. https://doi.org/10.1002/chem.201405774