Structure of the interface between two polar liquids: nitrobenzene and water.
Synchrotron X-ray reflectivity is used to study the electron density as a function of depth through the bulk nitrobenzene-water interface at four different temperatures. The measured interfacial width differs from the predictions of capillary wave theory with a progressively smaller deviation as the temperature is raised. Computer simulations suggest the presence of both molecular layering and dipole ordering parallel to the interface. Either layering or a bending rigidity, that can result from dipole ordering, can explain these measurements.
Luo
Guangming
G
Malkova
Sarka
S
Pingali
Sai Venkatesh
SV
Schultz
David G
DG
Lin
Binhua
B
Meron
Mati
M
Benjamin
Ilan
I
Vanysek
Petr
P
Schlossman
Mark L
ML
D003198:Computer Simulation; D009578:Nitrobenzenes / Q000737:chemistry*; D012542:Scattering, Radiation; D013499:Surface Properties; D017356:Synchrotrons; D013696:Temperature; D014867:Water / Q000737:chemistry*; D014965:X-Rays
D009578:Nitrobenzenes; D014867:Water; C036077:nitrobenzene