Sum frequency spectroscopy of the hydrophobic nanodroplet/water interface: Absence of hydroxyl ion and dangling OH bond signatures

Molecular Structure and Dynamics of Water at the Water–Air Interface Studied with Surface‐Specific Vibrational Spectroscopy

“…[14,103] Thef ree O À H groups at the water interface play an important role in hydrophobic hydration assembly [104][105][106] and on-water catalysis. [14,103] Thef ree O À H groups at the water interface play an important role in hydrophobic hydration assembly [104][105][106] and on-water catalysis.…”

“…Thepresence of the vibrational SFG signature of free OÀ Hg roups is characteristic of hydrophobic interfaces,s uch as the water-air interface,a lthough free O À Hg roups do not appear for all hydrophobic interfaces. [14,103] Thef ree O À H groups at the water interface play an important role in hydrophobic hydration assembly [104][105][106] and on-water catalysis. [107] Fort hese catalytic and hydration processes involving the free OÀHgroups,the dynamics of the free OÀHgroups is Figure 7.…”

“…Moreover,t he physical properties of interfacial water deviate in significant ways from bulk water. [9][10][11][12][13][14][15][16][17] In the outlook we briefly discuss water at other interfaces. [4,5] In addition to their fundamental interest, understanding these properties turns out to be critical in important topics,such as the discipline of electrochemistry,t he surface chemistry of atmospheric aerosols,t he chemistry of the mineral/water interface,a nd membrane biophysics,a nd small-scale phenomena, such as the movement of insects (i.e.w ater striders) over the water surface and the development of cracks in sidewalks on subfreezing days.…”

“…Thei nterested reader is referred to the corresponding literature. [9][10][11][12][13][14][15][16][17] In the outlook we briefly discuss water at other interfaces. samples-say 1 mmt hin-the number of water molecules in the few t hin interfacial region is many orders of magnitude smaller than that in the 1 mm" bulk" below the surface.C onventional techniques that provide direct information on structure,s uch as X-ray and neutron scattering and absorption, are useful for probing the structure of bulk liquid water, [18,19] but require special experimental geometries to extract information about the interface.…”

Untersuchung der Struktur und Dynamik von Wasser an der Wasser‐Luft‐Grenzfläche mittels oberflächenspezifischer Schwingungsspektroskopie

“…In diesem Aufsatz werden jüngste Fortschritte in der Untersuchung von Wasser an der Wasser-Luft-Grenzfläche mittels Laser-basierter oberflächenspezifischer Schwingungsspektroskopie diskutiert. [9][10][11][12][13][14][15][16][17] Im Ausblick wird kurz auf Wasser an anderen Grenzflächen eingegangen.…”