Molecular recognition of alkylammonium, n-methylpyridinium cations and native L-α-Amino acids by water soluble penta- and tetra- sulfonatocalixarenes

Carmela Bonaccorso, Salvatore Gentile, Fabio Giuseppe Gulino, Domenico Sciotto

Research output: Contribution to journalArticlepeer-review

Abstract

The inclusion of ethylammonium, N-methylpyridinium cations and native L-α-amino acids by the watersoluble pentasulfonatocalix[5]arene 1 has been investigated at neutral pH by 1H NMR. The complexation behavior has been compared with that of the homologous tetrasulfonatocalix[4]arene 2. Unlike host 2, host 1 exhibits high selectivity in the recognition of the investigated guests.

Original languageEnglish
Pages (from-to)598-603
Number of pages6
JournalLetters in Organic Chemistry
Volume6
Issue number8
DOIs
Publication statusPublished - Dec 2009

Keywords

  • 1H NMR titration
  • Calixarenes
  • Molecular recognition
  • Water-soluble

ASJC Scopus subject areas

  • Organic Chemistry
  • Biochemistry

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