Probing cucurbituril assemblies in water with tempo-like nitroxides

A trinitroxide supraradical with spin-spin interactions

David Bardelang, Karol Banaszak, Hakim Karoui, A. Rockenbauer, Mélanie Waite, Konstantin Udachin, John A. Ripmeester, Christopher I. Ratcliffe, Olivier Ouari, Paul Tordo

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Nitroxide free radicals are demonstrated to be useful guests for probing cucurbit[n]uril (CB[n]) assemblies in water by EPR spectroscopy. CB[7] and CB[8] significantly aggregate either in solution or in the solid state (as evidenced by a single-crystal X-ray structure in which CB[8] forms supramolecular triangles with 4-methoxy-TEMPO). The included nitroxides show a striking resistance to biologically relevant reduction, benefiting from the carcerand effect of CB[7] and CB[8] solutions.

Original languageEnglish
Pages (from-to)5402-5404
Number of pages3
JournalJournal of the American Chemical Society
Volume131
Issue number15
DOIs
Publication statusPublished - Apr 22 2009

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Water
Free radicals
Free Radicals
Paramagnetic resonance
Spectrum Analysis
X-Rays
Single crystals
Spectroscopy
X rays
cucurbituril
4-methoxy-2,2,6,6-tetramethylpiperidinyl-1-oxy
nitroxyl

ASJC Scopus subject areas

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

Cite this

Probing cucurbituril assemblies in water with tempo-like nitroxides : A trinitroxide supraradical with spin-spin interactions. / Bardelang, David; Banaszak, Karol; Karoui, Hakim; Rockenbauer, A.; Waite, Mélanie; Udachin, Konstantin; Ripmeester, John A.; Ratcliffe, Christopher I.; Ouari, Olivier; Tordo, Paul.

In: Journal of the American Chemical Society, Vol. 131, No. 15, 22.04.2009, p. 5402-5404.

Research output: Contribution to journalArticle

Bardelang, D, Banaszak, K, Karoui, H, Rockenbauer, A, Waite, M, Udachin, K, Ripmeester, JA, Ratcliffe, CI, Ouari, O & Tordo, P 2009, 'Probing cucurbituril assemblies in water with tempo-like nitroxides: A trinitroxide supraradical with spin-spin interactions', Journal of the American Chemical Society, vol. 131, no. 15, pp. 5402-5404. https://doi.org/10.1021/ja900306m
Bardelang, David ; Banaszak, Karol ; Karoui, Hakim ; Rockenbauer, A. ; Waite, Mélanie ; Udachin, Konstantin ; Ripmeester, John A. ; Ratcliffe, Christopher I. ; Ouari, Olivier ; Tordo, Paul. / Probing cucurbituril assemblies in water with tempo-like nitroxides : A trinitroxide supraradical with spin-spin interactions. In: Journal of the American Chemical Society. 2009 ; Vol. 131, No. 15. pp. 5402-5404.
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