scholarly journals Dielectric Saturation of the Ion Hydration Shell and Interaction between Two Double Helices of DNA in Mono- and Multivalent Electrolyte Solutions:  Foundations of the ε-Modified Poisson−Boltzmann Theory

2007 ◽  
Vol 111 (40) ◽  
pp. 11865-11865 ◽  
Author(s):  
Sergei Gavryushov
Keyword(s):  
Hydration Shell ◽  
Electrolyte Solutions ◽  
Ion Hydration ◽  
Double Helices ◽  
Poisson Boltzmann ◽  
Dielectric Saturation

Dielectric saturation and dielectric friction in electrolyte solutions

1982 ◽  
Vol 77 (12) ◽  
pp. 6189-6196 ◽  
Author(s):  
P. J. Stiles ◽  
J. B. Hubbard ◽  
R. F. Kayser
Keyword(s):  
Electrolyte Solutions ◽  
Dielectric Friction ◽  
Dielectric Saturation

scholarly journals Trends in mica–mica adhesion reflect the influence of molecular details on long-range dispersion forces underlying aggregation and coalignment

2017 ◽  
Vol 114 (29) ◽  
pp. 7537-7542 ◽  
Author(s):  
Dongsheng Li ◽  
Jaehun Chun ◽  
Dongdong Xiao ◽  
Weijiang Zhou ◽  
Huacheng Cai ◽  
...  
Keyword(s):  
Electrolyte Concentration ◽  
Water Structure ◽  
Electrolyte Solutions ◽  
Oriented Attachment ◽  
Dynamic Force ◽  
Dispersion Forces ◽  
Adhesion Forces ◽  
Ion Hydration ◽  
Charge Regulation ◽  
Surface Separation

Oriented attachment of nanocrystalline subunits is recognized as a common crystallization pathway that is closely related to formation of nanoparticle superlattices, mesocrystals, and other kinetically stabilized structures. Approaching particles have been observed to rotate to achieve coalignment while separated by nanometer-scale solvent layers. Little is known about the forces that drive coalignment, particularly in this “solvent-separated” regime. To obtain a mechanistic understanding of this process, we used atomic-force-microscopy-based dynamic force spectroscopy with tips fabricated from oriented mica to measure the adhesion forces between mica (001) surfaces in electrolyte solutions as a function of orientation, temperature, electrolyte type, and electrolyte concentration. The results reveal an ∼60° periodicity as well as a complex dependence on electrolyte concentration and temperature. A continuum model that considers the competition between electrostatic repulsion and van der Waals attraction, augmented by microscopic details that include surface separation, water structure, ion hydration, and charge regulation at the interface, qualitatively reproduces the observed trends and implies that dispersion forces are responsible for establishing coalignment in the solvent-separated state.

The Structural and Dynamic Properties of some Transition Metal Aqua Cations: Results from Neutron Scattering

1995 ◽  
Vol 50 (2-3) ◽  
pp. 247-256 ◽  
Author(s):  
G. W. Neilson ◽  
S. Ansell ◽  
J. Wilson
Keyword(s):  
Transition Metal ◽  
Neutron Scattering ◽  
Dynamic Properties ◽  
Hydration Shell ◽  
Electrolyte Solutions ◽  
Bulk Water ◽  
Water Molecules ◽  
Quasielastic Neutron ◽  
Quasielastic Neutron Scattering ◽  
Insight Into

Abstract The following paper comprises a survey of the role neutron scattering methods have played to help understand the origins of the diverse properties of electrolyte solutions which contain transition metal cations. It is seen how neutron diffraction and isotopic substitution is able to resolve the local structure around contrasting ions, such as Cr3+ , Ni2+, Fe3+ , Fe2+, Cu2+, without recourse to sophisticated modelling procedures. Quasielastic neutron scattering (QNS) provides insight into the dynamics of the protons in solution. The results enable one to distinguish between cations whose water molecules are coordinated on time scales larger than 5 x 10-9 s, shorter than 10-10s, or intermediate between those two limits. QNS also provides information on the existence of a second relatively short-lived hydration shell distinct from the bulk water.

Sign in / Sign up

Export Citation Format

Share Document