Properties of Water Confined in an Amphiphilic Nanopore

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Properties of Water Confined in an Amphiphilic Nanopore

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Publication Article, peer reviewed scientific
Title Properties of Water Confined in an Amphiphilic Nanopore
Author(s) Kocherbitov, Vitaly
Date 2008
English abstract
Molecular dynamics simulations of water and nitrogen confined in a model amphiphilic nanotube were performed. The nanotube has a diameter of 4 nm and consists of hydrophobic atoms and regularly placed OH groups. The results show that the density of water close to the nanotube walls is lower compared to the density in the center of the nanotube. The hydrogen bonded network of water molecules is practically intact compared with the bulk water. The simulation confirms that the experimentally observed low formal density of water in the nanopores (0.88 g/cm3) is due to formation of small unfilled cavities adjacent to the pore walls. Nitrogen molecules are localized primarily in the unhydrated cavities. The presence of nitrogen molecules is not the main reason for the decrease of water density in the nanotube.
DOI http://dx.doi.org/10.1021/jp805247b (link to publisher's fulltext)
Publisher American Chemical Society
Host/Issue J. Phys. Chem. C
Volume 112
Pages 16893-16897
Language eng (iso)
Subject(s) nanopore
amphiphilic
Sciences
Research Subject Categories::NATURAL SCIENCES::Chemistry::Physical chemistry
Research Subject Categories::NATURAL SCIENCES::Physics::Condensed matter physics::Surfaces and interfaces
Research Subject Categories::NATURAL SCIENCES::Chemistry::Physical chemistry::Surface and colloid chemistry
Research Subject Categories::NATURAL SCIENCES::Physics::Condensed matter physics::Liquid physics
Handle http://hdl.handle.net/2043/6855 Permalink to this page

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