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NMR study of the gelation of a designed gelator
Author(s) -
Brand Torsten,
Nolis Pau,
Richter Sven,
Berger Stefan
Publication year - 2008
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.2211
Subject(s) - chemistry , solvent , molecule , diffusion , proton nmr , organic chemistry , thermodynamics , physics
The gelation of a designed gelator was investigated by different NMR methods, which showed a clear thermal hysteresis. Two very simple approaches for the NMR determination of the gelation point are suggested. One involves the observation of the NMR integral, and the other records the ratio of the diffusion coefficients between the gelator and the solvent. Differential behavior of the gelator protons are interpreted as a hint that a part of the gelator molecule might still be flexible as in the dissolved state. Copyright © 2008 John Wiley & Sons, Ltd.