Formation and optical absorption of clusters of the p-tert-butylcalix[8]arene:C60 complex

O. P. Dimitriev, Z. I. Kazantseva, N. V. Lavrik

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Abstract

Depending on the initial concentrations of fullerene (C60) and p-tert-butyl calix[8]arene (C[8]A) in toluene, two regimes of their interaction were distinguished. The changes in optical absorption of C60:C[8]A mixed solutions observed over a period of time suggest that the following consecutive processes take place upon interaction between C60 and C[8]A in toluene: (1) molecular inclusion, and (2) growth and sedimentation of the insoluble C60/C[8]A clusters. At increased concentrations of the components, process (2) is suppressed and stable C60/C[8]A colloids can be formed. Spectral features of these colloids in different solvents clearly indicate the difference between self-aggregated C60 and small clusters of the complex. A specific influence of the C[8]A cage on the entrapped C60 molecules is also confirmed by IR spectroscopy of the complex in the solid state.

Original languageEnglish
Pages (from-to)85-91
Number of pages7
JournalJournal of Inclusion Phenomena
Volume35
Issue number1-2
DOIs
StatePublished - Oct 1999
Externally publishedYes

Keywords

  • Calixarene
  • Electronic spectra
  • Fullerene
  • Inclusion complex

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