Anomalous interfacial dynamics of single proton charges in binary aqueous solutions

  title={Anomalous interfacial dynamics of single proton charges in binary aqueous solutions},
  author={Jean Comtet and Archith Rayabharam and Evgenii Glushkov and Miao Zhang and Ahmet Avsar and Kenji Watanabe and Takashi Taniguchi and Narayana R. Aluru and Aleksandra Radenovi{\'c}},
  journal={Science Advances},
1 Citations
Engineering optically active defects in hexagonal boron nitride using focused ion beam and water
Hexagonal boron nitride (hBN) has emerged as a promising material platform for nanophotonics and quantum sensing, hosting optically-active defects with exceptional properties such as high brightness


Excess protons in mesoscopic water-acetone nanoclusters.
Examination of equilibrium and dynamical characteristics of the solvation of excess protons in mesoscopic, [m:n] binary polar clusters comprising m = 50 water molecules and n = 6, 25, and 100 acetone molecules finds clear evidence of the onset of the mixing process.
Amphiphilic character of the hydrated proton in methanol-water solutions.
The hydrated proton was studied in methanol-water solutions of varying methanol concentrations using the multistate empirical valence bond simulation method. Amphiphile-like behavior of the hydrated
Water-induced correlation between single ions imaged at the solid-liquid interface.
It is shown, by using atomic force microscopy and computer simulations, that single hydrated metal ions can spontaneously form ordered structures at the surface of homogeneous solids in aqueous solutions, with no need for specific interactions between the surface and the ions.
Protons migrate along interfacial water without significant contributions from jumps between ionizable groups on the membrane surface
It is found that proton diffusion along the membrane is fast even in the absence of ionizable groups in the membrane, and it decreases strongly in D2O as compared to H2O, indicating that the fast proton transport along the membranes is dominated by diffusion via interfacial water, and not via ionizable lipid moieties.
Probing surface charge fluctuations with solid-state nanopores.
It is identified that a contribution to the ionic current noise spectrum in solid-state nanopores that exceeds all other noise sources in the frequency band 0.1-10 kHz arises from surface charge fluctuations.
Methanol-water solutions: a bi-percolating liquid mixture.
An extensive series of neutron diffraction experiments and molecular dynamics simulations has shown that mixtures of methanol and water exhibit extended structures in solution despite the components being fully miscible in all proportions, and the observed concentration dependence of several material properties of the solution may have a structural origin.
Direct observation of water-mediated single-proton transport between hBN surface defects
It is demonstrated, at the single-molecule scale, that the solid/water interface provides a preferential pathway for lateral proton transport, with broad implications for molecular charge transport at liquid interfaces.
Origin of proton affinity to membrane/water interfaces
Previous time-resolved fluorescence measurements are extended to study the time and temperature dependence of surface proton transport to reveal an entropic trap that ensures channeling of highly mobile protons along the membrane interface in the absence of potent acceptors.
Correlation between surface and bulk structures of alcohol-water mixtures.
  • Yohko F Yano
  • Chemistry, Medicine
    Journal of colloid and interface science
  • 2005
The results indicate that the hydrophobic hydration in bulk induces the surface excess of the alcohols and after a monolayer is formed, the hydrophic hydration itself is no longer retained.
Electrostatic interaction forces in aqueous salt solutions of variable concentration and valency.
It is demonstrated that dynamic force spectroscopy in the frequency modulation (FM) mode with stiff cantilevers and sharp tips allows for a continuous detection of the tip-sample interactions without mechanical jump-to-contact instability and with substantially higher lateral resolution than standard colloidal probe measurements.