Host-guest assembly of pyridinium-conjugated calix[4]arene via cation-π interaction

Shinsuke Ishihara, Shinji Takeoka*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)


25-(4-Pyridiniumbutoxy)-26,27,28-trihydroxycalix[4]arene bromide 1 was designed to have both host and guest units in one molecule, and was assembled to become an oligomer via a cation-π interaction. X-ray diffraction (XRD) crystallographic study of 1 revealed that it oriented in a one-dimensional structure. Titrimetric 1H NMR analysis and electrospray ionization mass spectrometry (ESI-MS) analysis indicated that 1 formed an oligomer in solution, and the restraint of the segmental motion would lead to the stabilization of the cation-π interaction compared with a bi-molecular complex composed of 25,26,27,28-tetrahydroxycalix[4]arene and N-butylpyridinium bromide.

Original languageEnglish
Pages (from-to)181-184
Number of pages4
JournalTetrahedron Letters
Issue number2
Publication statusPublished - 2006 Jan 9


  • Calixarene
  • Cation-π interaction
  • Host-guest chemistry
  • Molecular recognition
  • Supramolecular chemistry

ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry


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