Bidirectional inclusion of free-radical probe by water-soluble calixarene as detected by electron spin resonance

Yoshimi Sueishi, Mieko Negi, Yashige Kotake

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The first detection of bidirectional inclusion by water-soluble calixarene is reported. The free-radical probe α-(2,4,6-trimethoxyphenyl)benzyl tert-butyl nitroxide is shown to produce two isomeric inclusion complexes with p-sulfonatocalix[8]arene in aqueous media, being detected with ESR spectrometry. ESR spectra were assignable to tert-butyl-in and phenyl-in complex and the association constants at room temperature were 131 and 45 mol -1 dm 3 for tert-butyl-in and phenyl-in, respectively.

Original languageEnglish
Pages (from-to)772-773
Number of pages2
JournalChemistry Letters
Volume35
Issue number7
DOIs
Publication statusPublished - Jul 5 2006

ASJC Scopus subject areas

  • Chemistry(all)

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