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

doi:10.1039/c8cp04328k

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

Technion - Israel Institute of Technology

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	29610-29615
Number of pages	6
Journal	Physical Chemistry Chemical Physics
Volume	20
Issue number	47
DOIs	https://doi.org/10.1039/c8cp04328k
State	Published - 2018

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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

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.",

author = "Reut Shapira and Balazs, \{Yael S.\} and Shifi Kababya and Rachel Edrei and Yoav Eichen",

note = "Publisher Copyright: {\textcopyright} 2018 the Owner Societies.",

year = "2018",

doi = "10.1039/c8cp04328k",

language = "الإنجليزيّة",

volume = "20",

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publisher = "Royal Society of Chemistry",

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T1 - Re-entrant supramolecular interactions in inverse-melting α-cyclodextrin·4-methylpyridine·water mixtures

T2 - An NMR study

AU - Shapira, Reut

AU - Balazs, Yael S.

AU - Kababya, Shifi

AU - Edrei, Rachel

AU - Eichen, Yoav

PY - 2018

Y1 - 2018

N2 - 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.

AB - 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.

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DO - 10.1039/c8cp04328k

M3 - مقالة

SN - 1463-9076

VL - 20

SP - 29610

EP - 29615

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 47

ER -

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

Abstract

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