The Supramolecular Structure of Water NMR Studies

" All our experimental NMR [In-cell nuclear magnetic resonance] data suggest the existence of a long range correlation involving a large number of water molecules, much larger than values compatible with the customary electrostatic theories. This correlation is long-lasting as shown by the value of τc . However, no evidence of this lasting correlation can be found in bulk water; as a matter of fact, this lack of evidence has convinced many physicists in recent decades that liquid water is a homogeneous monophasic liquid. Only recently, evidence has been reported [17] that liquid bulk water is a mixture of two phases, in which each molecule is continuously crossing between the two, giving rise to flickering liquid structure. Why does this flickering situation get stabilized in the NMR experiments? A reasonable answer should take into account that water subjected to NMR measurements is confined into narrow capillaries or small cells, where the water molecules are close to a wall. This circumstance has already been mentioned in our previous studies as the root of the explanation of the surprising NMR results [18, 19]. One should therefore admit that water near walls acquires physical properties different to those of bulk water. This conclusion is supported by findings of the group led by G. Pollack [20, 21]. They found that water on a hydrophilic surface forms layers of ‘anomalous’ water up to 500 µm thick."

Last modified on 05-Aug-21

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