Neutron scattering observation of quasi-free rotations of water confined in carbon nanotubes

Briganti, G.; Rogati, G.; Parmentier, Alexandra; Maccarini, Marco; Luca, Francesco De

doi:10.1038/srep45021

Cited by 25 publications

(20 citation statements)

References 47 publications

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“…1, the isotropic spread of incoherent scattering over a 4p solid angle, 18 and quasi-elastic neutron scattering (QENS) results on this same system reported elsewhere. 9…”

Section: Nse Experimentsmentioning

confidence: 99%

“…In particular, confinement of water in nanometric cavities -especially in cylindrical nanopores -represents a topic of general interest, since low-dimensional water is a prototypical non-bulk system that is widespread in nature [1][2][3] and synthetic structures of technological importance. 4,5 In this context, carbon nanotubes (CNTs), which are peculiar allotropes of carbon characterized in terms of diameter and (n,m) chiral indices, 6 have become popular in the field of nanofluidics as effective geometries to study small-molecule polar liquids under quasi-1D ultra-hydrophobic confinement, [7][8][9] especially in their single-wall carbon nanotube (SWCNT) declination.…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, experimental and theoretical effort has been spent in the description of the structure of nanotube water as a function of SWCNT diameter, [10][11][12][13] and a variety of experimental techniques, from X-ray diffraction (XRD) 14 and inelastic neutron scattering (INS) 9,10 to nuclear magnetic resonance (NMR), 15 have been exploited to explore this type of system.…”

Section: Introductionmentioning

confidence: 99%

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Neutron spin echo monitoring of segmental-like diffusion of water confined in the cores of carbon nanotubes

Parmentier¹,

Maccarini²,

Francesco

et al. 2019

Phys. Chem. Chem. Phys.

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“…1, the isotropic spread of incoherent scattering over a 4p solid angle, 18 and quasi-elastic neutron scattering (QENS) results on this same system reported elsewhere. 9…”

Section: Nse Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Neutron spin echo monitoring of segmental-like diffusion of water confined in the cores of carbon nanotubes

Parmentier¹,

Maccarini²,

Francesco

et al. 2019

Phys. Chem. Chem. Phys.

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“…Still, it has recently been reported that water, when confined in beryl crystal, exhibits ferroelectric properties 28 because an intermolecular distance of 5 Å is sufficient to alleviate the tetrahedral orientation from bulk water hydrogen bonding. A similar situation arises when water is confined inside a carbon nanotube 29 , 30 . We note that the average spacing between water molecules in our pp-matrix is of similar magnitude, which could allow a ferroelectric phase of water to exist.…”

Section: Resultsmentioning

confidence: 83%

Nanoconfined water can orient and cause long-range dipolar interactions with biomolecules

Hegemann

Hocquard

Heuberger

2017

Sci Rep

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Surface properties are generally determined by the top most surface layer also defining how molecules adsorb onto it. By exploring effects due to interactions with deeper subsurface layers, however, long-range interaction forces were found to also significantly contribute to molecular adsorption, in which hydration of the subsurface region is the key factor. Water molecules confined to a subsurface amphiphilic gradient are confirmed to cause these long-range dipolar interactions by preferential orientation, thus significantly changing the way how a protein interacts with the surface. These findings imply future exploitation of an additional factor to modulate adsorption processes.

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“…Meanwhile, between CNFs, spatial confinement is also formed. Numbers of work has shown that water in confined space show distinct behaviour compared to bulk water [27][28][29][30] . At micron scale, the capillary force on the water in the different CNF superstructure should be taken in account, just as the cell structure and lumen of wood cell.…”

mentioning

confidence: 99%

Water Dynamics in Hydrated Carboxylated Cellulose Nanofibril Membranes

Yu¹,

Guccini²,

Demmel³

et al. 2019

Preprint

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Cellulose nanofibrils (CNF) are a class of materials with good mechanical properties, surface functionality and bio-/environmental friendliness. They have been used in many applications as loading material or function materials, where water-cellulose interaction determines the materials performance.Especially, CNF with carboxylated groups can be used as the separation membrane in polymer electrolyte membrane fuel cell. The water dynamics is closely related to the proton conductivity. The Non-destructive quasi-elastic neutron scattering (QENS) is used to characterized water movement in hydrated membrane made of CNF prepared by TEMPO-oxidation with different surface charges.However, neither surface charge nor the nanoconfinement due to membrane swelling has large impact on water dynamics mechanism. A slow diffusive motion is found with the diffusion coefficient close to bulk water and that in hydrated Nafion membrane regardless the surface charge, while a fast motion is rather localized with a correlation time increasing as temperature increase, which might related to the hydrogen bond network formation between water and CNF. † Present address: RISE Introduction:The water -cellulose interaction is one of the most important scientific topics in the field of woodbased material science. It does not only conceal the secret behind the plant growth, but also determines processing parameters and performance of the final wood-based materials. In nature, cellulose polymer chains self-assemble into nanofibrils which consist of alternative crystalline and non-crystalline region along the fibril long axis. These so-called cellulose nanofibrils (CNF) serve as basic building block and are further organized with other biopolymer in water media to form the plant cell wall. 1 Compared to many wood-based materials, CNF to the largest extent keep the strong nature of cellulose materials, i.e. preserving excellent mechanical properties 2,3 . Meanwhile, the high surface-to-volume ratio enables a large surface area per unit weight and the extensive hydroxyl group exposed on the CNF surface could be easily modified and functionalized 4,5 . Especially, the carboxylation of CNF by the TEMPO-oxidation process has now become a common step for most of application as it delivers fine cross-section and activated carboxylated surface ligands 6 . Additionally, CNF are readily extractable from the pulp fibres and biodegradable. Thus, they have become a popular material platform for developing novel composites 4,5,7-9 . Among many applications, the good mechanical property of CNF has attracted most of the attention for engineering materials. Moisture content in CNF based materials influence both stiffness and strength 10 . On top of the robustness, the CNF could be used alone and/or as a carrier to load other functional materials for versatile purposes in optics 11 , electronics 12 and energy device 13 , where moisture content and electrolyte are closely relavent. Recently, CNF membranes with surface functional group have been successfully tested a...

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Neutron scattering observation of quasi-free rotations of water confined in carbon nanotubes

Cited by 25 publications

References 47 publications

Neutron spin echo monitoring of segmental-like diffusion of water confined in the cores of carbon nanotubes

Neutron spin echo monitoring of segmental-like diffusion of water confined in the cores of carbon nanotubes

Nanoconfined water can orient and cause long-range dipolar interactions with biomolecules

Water Dynamics in Hydrated Carboxylated Cellulose Nanofibril Membranes

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