Role of Electrical Interactions in the Rotational Motion of a Charged Solute Molecule in a Polar Solvent

1998 ◽  
Vol 102 (32) ◽  
pp. 6299-6302 ◽  
Author(s):  
N. V. Brilliantov ◽  
N. G. Vostrikova ◽  
O. P. Revokatov
Keyword(s):  
Rotational Motion ◽  
Polar Solvent ◽  
Solute Molecule

Concerning the role of the reaction field in the proton shielding of molecules in solution

1967 ◽  
Vol 45 (10) ◽  
pp. 1093-1096 ◽  
Author(s):  
G. Kotowycz ◽  
T. Schaefer
Keyword(s):  
Dielectric Constant ◽  
Chemical Shift ◽  
Solute Molecule ◽  
Proton Chemical Shift ◽  
Square Root ◽  
Reaction Field ◽  
Strong Curvature

It is shown that the strong curvature in some plots of proton chemical shift σ versus the Onsager reaction field E can be removed by plotting the shifts of the solute molecule versus the square root of the dielectric constant of the medium. The resulting values of k in the equation σ = −kE cos θ are fairly consistent and reasonable in magnitude.

Role of Rotational Motion in the Dissociative Adsorption and Associative Desorption Dynamics ofD2/Cu(111)

1997 ◽  
Vol 78 (2) ◽  
pp. 286-289 ◽  
Author(s):  
Wilson Agerico Diño ◽  
Hideaki Kasai ◽  
Okiji Ayao
Keyword(s):  
Rotational Motion ◽  
Dissociative Adsorption

scholarly journals In Silico Modeling of the Influence of Environment on Amyloid Folding Using FOD-M Model

2021 ◽  
Vol 22 (19) ◽  
pp. 10587
Author(s):  
Irena Roterman ◽  
Katarzyna Stapor ◽  
Piotr Fabian ◽  
Leszek Konieczny
Keyword(s):  
Characteristic Property ◽  
Polar Solvent ◽  
Amyloid Formation ◽  
Hydrophobic Residues ◽  
Intrinsically Disordered ◽  
Polar Environment ◽  
In Silico Modeling ◽  
A Chain ◽  
The Given

The role of the environment in amyloid formation based on the fuzzy oil drop model (FOD) is discussed here. This model assumes that the hydrophobicity distribution within a globular protein is consistent with a 3D Gaussian (3DG) distribution. Such a distribution is interpreted as the idealized effect of the presence of a polar solvent—water. A chain with a sequence of amino acids (which are bipolar molecules) determined by evolution recreates a micelle-like structure with varying accuracy. The membrane, which is a specific environment with opposite characteristics to the polar aquatic environment, directs the hydrophobic residues towards the surface. The modification of the FOD model to the FOD-M form takes into account the specificity of the cell membrane. It consists in “inverting” the 3DG distribution (complementing the Gaussian distribution), which expresses the exposure of hydrophobic residues on the surface. It turns out that the influence of the environment for any protein (soluble or membrane-anchored) is the result of a consensus factor expressing the participation of the polar environment and the “inverted” environment. The ratio between the proportion of the aqueous and the “reversed” environment turns out to be a characteristic property of a given protein, including amyloid protein in particular. The structure of amyloid proteins has been characterized in the context of prion, intrinsically disordered, and other non-complexing proteins to cover a wider spectrum of molecules with the given characteristics based on the FOD-M model.

Understanding the role of organic polar solvent induced nanoscale morphology and electrical evolutions of P3HT:PCBM composite film

2015 ◽  
Vol 25 ◽  
pp. 50-56 ◽  
Author(s):  
Seung Joo Lee ◽  
Hyeong Pil Kim ◽  
Abd. Rashid bin Mohd Yusoff ◽  
Jin Jang
Keyword(s):  
Composite Film ◽  
Polar Solvent ◽  
Nanoscale Morphology

Competitive Interactions at Electrolyte/Octanol Interfaces - A Molecular Perspective

2020 ◽  
Author(s):  
Nitesh Kumar ◽  
Michael J. Servis ◽  
Zhu Liu ◽  
Aurora Clark
Keyword(s):  
Polar Solvent ◽  
Dynamic Properties ◽  
Ion Concentration ◽  
Ion Solvation ◽  
Liquid Interfaces ◽  
Wave Characteristics ◽  
Aqueous Surface ◽  
Biphasic Systems ◽  
Compare And Contrast

<p>Much is understood about electrolyte liquid/liquid interfaces, yet the relationships between ion solvation, adsorption, and the instantaneous surface have not been the topic of signicant study. The thermally corrugated capillary wave characteristics of the instantaneous aqueous surface contribute to heterogeneous interfacial structural and dynamic properties. Those properties are sensitive the nature of the immiscible nonpolar solvent. In this work, we examine the role of interfacial heterogeneity upon ion behavior and further, how this is inuenced by a partially polar solvent relative to a vapor phase analog. We compare and contrast ion solvation in electrolyte/vapor and electrolyte/octanol biphasic systems, focusing upon the changes to interfacial heterogeneity in the presence of the octanol solvent and the variations of ion concentration at dierent interfacial regions. The interplay between competing forces introduced by strong octanol water interactions at the interface is examined, with a new understanding of how such competition may lead to tailored interfacial properties.</p>

Role of rotational motion in diffusion NMR experiments on supramolecular assemblies: application to Sup35NM fibrils

2021 ◽  
Author(s):  
Boris B. Kharkov ◽  
Ivan S. Podkorytov ◽  
Stanislav A. Bondarev ◽  
Mikhail V. Belousov ◽  
Vladislav A. Salikov ◽  
...  
Keyword(s):  
Rotational Motion ◽  
Supramolecular Assemblies ◽  
Diffusion Nmr
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