title: Increased fraction of weakened hydrogen bonds of water in aerosol OT reverse micelles.
abstract: Water in aerosol OT reverse micelles has been extensively studied as a model system for nanoconfined water. Results from previous vibrational studies suggest that water confined this way has slower dynamics compared to bulk water; however, the effects on the hydrogen bonding network are unclear. From our study of the structure of water hydrogen bonding using x-ray Raman spectroscopy, we found an increased fraction of weakened hydrogen bonds upon confinement, similar to the effect seen in temperature increase and NaCl solvation, as evidenced by the changes in specific spectral features.
authors.affiliation: Stanford Synchrotron Radiation Lightsource, P.O. Box 20450, Stanford, California 94309, USA.
authors.forename: Iradwikanari
authors.initials: I
authors.lastname: Waluyo
authors.forename: Dennis
authors.initials: D
authors.lastname: Nordlund
authors.forename: Uwe
authors.initials: U
authors.lastname: Bergmann
authors.forename: Lars G M
authors.initials: LG
authors.lastname: Pettersson
authors.forename: Anders
authors.initials: A
authors.lastname: Nilsson
mesh_terms: D000336:Aerosols / Q000737:chemistry; D006860:Hydrogen Bonding; D008823:Micelles; D012965:Sodium Chloride / Q000737:chemistry; D013059:Spectrum Analysis, Raman; D013386:Succinates / Q000737:chemistry*; D013696:Temperature; D014867:Water / Q000737:chemistry*
chemical_list: C512554:1,4-bis(2-ethylhexyl) sodium sulfosuccinate; D000336:Aerosols; D008823:Micelles; D013386:Succinates; D014867:Water; D012965:Sodium Chloride