Re-entrant supramolecular interactions in inverse-melting α-cyclodextrin·4-methylpyridine·water mixtures: An NMR study

Reut Shapira, Yael S. Balazs, Shifi Kababya, Rachel Edrei, Yoav Eichen

Research output: Contribution to journalArticlepeer-review

Abstract

Inverse melting α-cyclodextrin·4-methylpyridine·H2O ternary mixtures were studied via solution, high-resolution magic-angle-spinning and 2D-NOESY NMR spectroscopy with the aim of unveiling the supramolecular driving force for the unusual inverse-melting phase transition. The role of solvent-solvent interactions as well as solvent-solute interactions in the emergence of the inverse-melting phenomenon is revealed. A surprising re-entrant solvent-solvent interaction is found in the system and in the 4-methylpyridine·water solvent system, supporting the non-coincidental relationship between inverse melting and re-entrant phase transitions, at least in the present system.

Original languageEnglish
Pages (from-to)29610-29615
Number of pages6
JournalPhysical Chemistry Chemical Physics
Volume20
Issue number47
DOIs
StatePublished - 2018

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry

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