Dynamics of Water Filaments in Disordered Environments

Orzechowski, Marek and Meuwly, Markus. (2010) Dynamics of Water Filaments in Disordered Environments. The Journal of Physical Chemistry B, 114 (38). pp. 12203-12212.

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Official URL: http://edoc.unibas.ch/dok/A5842408

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The formation, stability, and dynamics of water filaments in disordered environments is investigated by using atomistic molecular dynamics simulations. It is found that in an alkyl-chain arrangement representative of that used in liquid chromatography, extended water filaments can form for up to 1 ns before they are destroyed again due to thermal fluctuations. The water dynamics in the disordered stationary phase is surprisingly intense with about 107 per alkyl chain per second of water molecules flowing in and out of the stationary phase. This is compatible with estimates based on Fick’s law using a homogeneous solubility-diffusion model. The simulations also establish the existence of different types of water molecules as was predicted 30 years ago. From the current simulations they can be identified as (SiOH-) surface-bound, interfacial, and bulk water molecules.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Physikalische Chemie (Meuwly)
UniBasel Contributors:Meuwly, Markus
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Chemical Society
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:07 Dec 2016 14:03
Deposited On:14 Sep 2012 06:59

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