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A new insight on the hydrogen bonding structures of nanoconfined water: a Raman study
Author(s) -
Crupi Vincenza,
Interdonato Salvatore,
Longo Francesca,
Majolino Domenico,
Migliardo Placido,
Venuti Valentina
Publication year - 2008
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1857
Subject(s) - raman spectroscopy , nanoporous , hydrogen bond , molecule , adsorption , chemical physics , chemistry , substrate (aquarium) , crystallography , organic chemistry , optics , physics , oceanography , geology
Water adsorbed in nanoporous silica glass has been investigated by Raman spectroscopy. The analysis was performed as a function of temperature (from + 5 to + 75 °C), pore diameter (25 and 75 Å) and by changing the nature of the substrate (from hydrophilic to hydrophobic) in order to understand the role played on the dynamic peculiarities of water arrangements both by the bare geometrical confinement and the specific interaction with surface. The experimental spectra, collected in the intra‐molecular OH stretching vibrational region, have been decomposed into a sum of sub‐bands, representing water molecule arrangements with different types of hydrogen bonding. Hence, we gave a quantitative picture of the temperature and confinement effects on the connectivity pattern. Copyright © 2007 John Wiley & Sons, Ltd.