scholarly journals Liquid structure of dibutyl sulfoxide

2016 ◽  
Vol 18 (23) ◽  
pp. 15980-15987 ◽  
Author(s):  
Fabrizio Lo Celso ◽  
Bachir Aoun ◽  
Alessandro Triolo ◽  
Olga Russina
Keyword(s):  
Hydrogen Bonding ◽  
Liquid Structure ◽  
Dipole Interactions

Liquid DBSO shows mesoscopic polar/apolar alternation. Dipole–dipole interactions are responsible for correlations between DBSO molecules that do not interact through hydrogen bonding.

Effect of Hydrogen Bonding Ability, Dipole-Dipole Interactions and Viscosity of Extracellular Matrix Fluid on the Bone Mechanical Behavior

2012 ◽  
Author(s):  
Jitin Samuel ◽  
Cong-Gui Zhao ◽  
Bijay Giri ◽  
Debarshi Sinha ◽  
Xiaodu Wang
Keyword(s):  
Extracellular Matrix ◽  
Hydrogen Bonding ◽  
Mechanical Behavior ◽  
Fragility Fracture ◽  
Fragility Fractures ◽  
Functional Relationships ◽  
Dipole Interactions ◽  
Morbidity Cost

Fragility fracture as a mode of pathologic failure in bone is a major healthcare concern and has adverse consequences with respect to morbidity, cost and to a lesser extent mortality. Understanding the structure/composition and functional relationships among the bone constituents is an important step towards prevention/treatment of fragility fractures.

scholarly journals Potential of Kale and Lettuce Residues as Natural Adsorbents of the Carcinogen Aflatoxin B1 in a Dynamic Gastrointestinal Tract-Simulated Model

Toxins ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 771
Author(s):  
Alma Vázquez-Durán ◽  
María de Jesús Nava-Ramírez ◽  
Daniel Hernández-Patlán ◽  
Bruno Solís-Cruz ◽  
Víctor Hernández-Gómez ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Gastrointestinal Tract ◽  
Aflatoxin B1 ◽  
Electrostatic Interactions ◽  
Hydrophobic Interactions ◽  
Maximum Adsorption Capacity ◽  
Promising Alternative ◽  
Simulated Model ◽  
Dipole Interactions ◽  
Natural Adsorbents

Adsorption of the carcinogen aflatoxin B1 (AFB1) onto agro-waste-based materials is a promising alternative over conventional inorganic binders. In the current study, two unmodified adsorbents were eco-friendly prepared from kale and lettuce agro-wastes. A dynamic gastrointestinal tract-simulated model was utilized to evaluate the removal efficiency of the sorptive materials (0.5%, w/w) when added to an AFB1-contaminated diet (100 µg AFB1/kg). Different characterization methodologies were employed to understand the interaction mechanisms between the AFB1 molecule and the biosorbents. Based on adsorption results, the biosorbent prepared from kale was the best; its maximum adsorption capacity was 93.6%, which was significantly higher than that of the lettuce biosorbent (83.7%). Characterization results indicate that different mechanisms may act simultaneously during adsorption. Non-electrostatic (hydrophobic interactions, dipole-dipole interactions, and hydrogen bonding) and electrostatic interactions (ionic attractions) together with the formation of AFB1-chlorophyll complexes appear to be the major influencing factors driving AFB1 biosorption.

p, T-Dependence of Self Diffusion in Mixtures of Hexane/Ethanol and Hexane/Dimethylether

1995 ◽  
Vol 50 (2-3) ◽  
pp. 149-154 ◽  
Author(s):  
A. Heinrich-Schramm ◽  
W. E. Price ◽  
H.-D. Lüdemann
Keyword(s):  
Hydrogen Bonding ◽  
Qualitative Analysis ◽  
Pressure Dependence ◽  
Diffusion Coefficients ◽  
Low Temperatures ◽  
The Self ◽  
Slight Effect ◽  
Self Diffusion ◽  
Dipole Interactions ◽  
Significant Difference

Abstract Self-diffusion in ethanol/hexane and dimethylether/hexane mixtures of various compositions has been measured at 215-350 K and up to 200 MPa. Qualitative analysis of the results indicates that, as expected, hydrogen bonding retards the self-diffusion of ethanol in the mixture, especially at the low temperatures. Dimethylether shows a slight effect of dipole-dipole interactions on the self-diffu­sion, as seen by a higher ΔE* value than for the alkane. However there is no significant difference in the pressure dependence for both mixtures. This is shown by considering the ratio of the two diffusion coefficients, which suggests that, contrary to what is observed for pure alcohols, pressure has little effect upon the hydrogen bonding of ethanol in the mixture. In additon, there is surprisingly little concentration dependence on the ratios for either mixture.

Cyclic organophosphorus compounds. I. Synthesis and infrared spectral studies of cyclic hydrogen phosphites and thiophosphites

1967 ◽  
Vol 45 (21) ◽  
pp. 2501-2512 ◽  
Author(s):  
A. Zwierzak
Keyword(s):  
Hydrogen Bonding ◽  
Organophosphorus Compounds ◽  
Spectral Studies ◽  
Effect Of Solvent ◽  
Dipole Interactions ◽  
Synthetic Procedure ◽  
Infrared Spectral

A general synthetic procedure leading to cyclic hydrogen phosphites has been devised. The effect of solvent on the P==O and P—H infrared stretching modes of cyclic hydrogen phosphites and thiophosphites has been studied. It is concluded that association of cyclic hydrogen phosphites is attributable to dipole–dipole interactions rather than to hydrogen bonding.

scholarly journals Host–guest modes and supramolecular frameworks of complexes of tetramethyl cucurbit[6]uril with 4-chloroaniline and 4,4′-diaminostilbene

RSC Advances ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 3470-3475
Author(s):  
Ye Meng ◽  
Weiwei Zhao ◽  
Jun Zheng ◽  
Daofa Jiang ◽  
Jie Gao ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Weak Interaction ◽  
Interaction Forces ◽  
Π Interactions ◽  
Dipole Interactions

Two TMeQ[6]-based multi-dimensional supramolecular frameworks were formed driven by weak interaction forces in the system (hydrogen bonding, C–H... π interactions, ion–dipole interactions, and dipole–dipole interactions).

Charge–dipole interactions in G-quadruplex thrombin-binding aptamer

2018 ◽  
Vol 20 (32) ◽  
pp. 21068-21074 ◽  
Author(s):  
Hyun Woo Kim ◽  
Young Min Rhee ◽  
Seung Koo Shin
Keyword(s):  
Hydrogen Bonding ◽  
Dipole Interaction ◽  
Dipole Interactions ◽  
G Quadruplex

As the charge increases, the charge–dipole interaction becomes stronger and distorts the planar G-tetrad geometry formed by hydrogen bonding.

DIELECTRIC RELAXATION IN LIQUIDS: II. ISOMERIC PENTANEDIOLS

1961 ◽  
Vol 39 (11) ◽  
pp. 2139-2154 ◽  
Author(s):  
D. W. Davidson
Keyword(s):  
Hydrogen Bonding ◽  
High Frequency ◽  
Low Temperatures ◽  
Dipole Moments ◽  
Frequency Dispersion ◽  
Liquid Structure ◽  
Dielectric Constants ◽  
Oh Groups ◽  
High Frequencies ◽  
Static Dielectric Constants

For five pentanediols the infrared spectra, the dipole moments, and the static dielectric constants show an increasing degree of internal hydrogen bonding with increasing proximity of the OH groups. The dielectric dispersion loci at low temperatures are skewed arcs over most of the dispersion range. Values of the parameter β decrease from ca. 1 to 0.55 in the series 1,5-, 1,4-, 1,2-, 2,4-, and 2,3-pentanediol, which is also the order of increasing relaxation time τ0 at low temperatures. Increased τ0 is associated with increased irregularity of intermolecular hydrogen bonding, an effect which supports the view that relaxation proceeds by a co-operative mechanism which is facilitated by regularity in the liquid structure. At temperatures of "structural relaxation", values of log τ0 are linear in (T–T∞)−1; the proportionality constants, but not the T∞'s, are the same for all five diols.The experimental behavior at relatively high frequencies departs from both the skewed-arc and Glarum equations, although less from the latter. These departures are compared with the high frequency dispersion regions in n-propanol.

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