Influence of Pore Surface Chemistry on the Rotational Dynamics of Nanoconfined Water

@inproceedings{Malfait2021InfluenceOP,
  title={Influence of Pore Surface Chemistry on the Rotational Dynamics of Nanoconfined Water},
  author={Benjamin Malfait and A{\^i}cha Jani and J Benedikt Mietner and Ronan Lefort and Patrick Huber and Michael Fr{\"o}ba and Denis Morineau},
  year={2021}
}
Institute of Physics of Rennes, CNRS-University of Rennes 1, UMR 6251, F-35042 Rennes, France Institute of Inorganic and Applied Chemistry, University of Hamburg, 20146 Hamburg, Germany Institute for Materials and X-ray Physics, Hamburg University of Technology, 21073 Hamburg, Germany Centre for X-Ray and Nano Science CXNS, Deutsches Elektronen-Synchrotron DESY, 22603 Hamburg, Germany Centre for Hybrid Nanostructures CHyN, Hamburg University, 22607 Hamburg, Germany 

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References

SHOWING 1-10 OF 77 REFERENCES
Properties of Water Confined in Periodic Mesoporous Organosilicas: Nanoimprinting the Local Structure.
TLDR
The molecular mobility of water confined in periodic mesoporous organosilicas (PMOs) is influenced by the polarity of the organic moiety, and Multidimensional solid-state NMR spectroscopy directly probes the spatial arrangement of water inside the pores. Expand
Effects of Partial Crystallization on the Dynamics of Water in Mesoporous Silica
We use differential scanning calorimetry, broadband dielectric spectroscopy, and deuteron nuclear magnetic resonance to investigate water dynamics in MCM-41 pores with a diameter of d = 2.5 nm. AtExpand
Freezing and melting of water confined in silica nanopores.
TLDR
This work focuses on recent studies of the limits of freezing and melting of water in the cylindrical pores of ordered mesoporous silicas with pore diameters in the range of 2-10 nm, based on vapor sorption measurements, calorimetric studies, NMR spectroscopy and cryoporometry, and neutron diffraction studies. Expand
2H NMR study on temperature-dependent water dynamics in amino-acid functionalized silica nanopores.
TLDR
The water reorientation is slowest for the Lys functionalization, followed by Ala and Glu and, finally, the native silica pores, where this span is largely independent of the temperature in the range ∼200-250 K. Expand
Water Transport in Periodic Mesoporous Organosilica Materials
Water transport in periodic mesoporous organosilicas (PMOs) was studied using pulsed field gradient NMR. A series of isogeometric PMO materials with different chemical compositions of the pore wallsExpand
Capillary rise of water in hydrophilic nanopores.
TLDR
The capillary rise of water in three-dimensional networks of hydrophilic silica pores with 3.5 nm and 5 nm mean radii is reported on to reflect the structural-thermodynamic partitioning in strongly silica bound water layers and capillary condensed water in the pore center. Expand
Extension and Limits of Cryoscopy for Nanoconfined Solutions.
TLDR
Investigating the phase behavior of aqueous solutions of glycerol confined in MCM-41 and SBA-15 nanoporous matrixes by calorimetry reveals that the water activity strongly deviates from the bulk solution with the same composition, indicating the possible role of concentration heterogeneities in determining the onset of ice freezing in strongly nanoconfined solutions. Expand
Reorientation of Deeply Cooled Water in Mesoporous Silica: NMR Studies of the Pore-Size Dependence.
TLDR
Above and below the no-man's land of water, the pore-size-independent correlation times τp of confined water are consistent with those of the bulk liquid, suggesting that a dynamical process that is a characteristic feature of water is probe. Expand
Structure and energetics of water-silanol binding on the surface of silicalite-1: quantum chemical calculations.
TLDR
The results show that the most stable conformation takes place when a water molecule forms two hydrogen bonds with two silanols, with only one silanol lying on the opening of the pore of the straight channel. Expand
Molecular dynamics in grafted layers of poly(dimethylsiloxane)
Dielectric relaxation spectroscopy (10−1 Hz to 106 Hz) is employed to study the molecular dynamics of poly(dimethylsiloxane) (PDMS, Mw=1.7×105 g mol−1 and Mw=9.6×104 g mol−1) as grafted films withExpand
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