Hydration of Hofmeister ions

Sun, Chang Q.; Huang, Yongli; Zhang, Xi

doi:10.1016/j.cis.2019.03.003

Cited by 20 publications

(8 citation statements)

References 129 publications

(199 reference statements)

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“…In this model of translocation, also referred to as the solubility–diffusion model, the ion crosses the hydrophobic core in a desolvated state without causing any membrane distortion . As the desolvation energy of K + is lower than that for Na + , − the former would traverse the hydrophobic core of the membrane more readily, resulting in larger membrane conduction for K + , as reported (Figure .). This model of translocation cannot, however, explain the reduction in membrane conduction reported with Na + at concentrations <5 mM.…”

mentioning

confidence: 72%

Role of Ion–Phospholipid Interactions in Zwitterionic Phospholipid Bilayer Ion Permeation

Deplazes

Tafalla

Cranfield

et al. 2020

J. Phys. Chem. Lett.

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Despite the central role of Na + and K + in physiological processes, it is still unclear whether they interact or alter physical properties of simple zwitterionic phospholipid bilayers at physiologically relevant concentrations. Here we report a difference in membrane permeability between Na + and K + , as measured with electrical impedance spectroscopy and tethered bilayer lipid membranes. We reveal that the differences in membrane permeability originate from distinct ion coordination by carbonyl oxygens at the phospholipid-water interface, altering the propensity for bilayer pore formation. Molecular Dynamics simulations showed differences in the coordination of Na + and K + at the phospholipid-water interface of zwitterionic phospholipid bilayers. The ability of Na + to conscript more phospholipids with a greater number of coordinating interactions causes a higher localised energy barrier for pore formation. These results provide evidence that ion specific interactions at the phospholipidwater interface can modulate physical properties of zwitterionic phospholipid bilayers. TOC

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mentioning

confidence: 72%

Role of Ion–Phospholipid Interactions in Zwitterionic Phospholipid Bilayer Ion Permeation

Deplazes

Tafalla

Cranfield

et al. 2020

J. Phys. Chem. Lett.

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“…Certain slighter deviations in terms of missing hydrogen bonding effects were already discussed in ref . Further consequences of detailed hydrogen bonding effects were also observed in the context of hydrated Hofmeister ions . For certain ions in aqueous solutions, one can observe a significant deformation of the hydrogen bond network in combination with ionic polarization effects around the ion which results in screening and repulsion contributions.…”

Section: Discussion Of Approximationsmentioning

confidence: 61%

Application of Fundamental Chemical Principles for Solvation Effects: A Unified Perspective for Interaction Patterns in Solution

Miranda‐Quintana

Smiatek

2022

J. Phys. Chem. B

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We demonstrate the utility of basic chemical principles like the "|Δμ| big is good" (DMB) rule for the study of solvation interactions between distinct solutes such as ions and solvents. The corresponding approach allows us to define relevant criteria for maximum solvation energies of ion pairs in different solvents in terms of electronegativities and chemical hardnesses. Our findings reveal that the DMB principle culminates into the strong and weak acids and bases concept as recently derived for specific ion effects in various solvents. The further application of the DMB approach highlights a similar condition for the chemical hardnesses with a reminiscence to the hard/soft acids and bases principle. Comparable conclusions can also be drawn with regard to the change of the solvent. We show that favorable solvent interactions are mainly driven by low chemical hardnesses as well as high electronegativity differences between the ions and the solvent. Our findings highlight that solvation interactions are governed by basic chemical principles, which demonstrates the close similarity between solvation mechanisms and chemical reactions.

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“…The spinning solutions were prepared by dissolving a certain amount of gelatin and Ca(NO 3 ) 2 powders in water. The incorporation of Ca(NO 3 ) 2 (chaotropes) increased the hydrated water content of gelatin molecules and inhibited the formation of hydrogen bonds between gelatin chains, thus delaying the gelation of gelatin aqueous solution at room temperature and resulting in smooth extrusion of the gelatin aqueous solution [ 33 ]. Subsequently, the spinning solutions were squeezed into the (NH 4 ) 2 SO 4 (kosmotropes) aqueous solution through a syringe pump.…”

Section: Resultsmentioning

confidence: 99%

Breathable, antifreezing, mechanically skin-like hydrogel textile wound dressings with dual antibacterial mechanisms

Jiang

Deng²,

Jin³

et al. 2023

Bioactive Materials

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Hydration of Hofmeister ions

Cited by 20 publications

References 129 publications

Role of Ion–Phospholipid Interactions in Zwitterionic Phospholipid Bilayer Ion Permeation

Role of Ion–Phospholipid Interactions in Zwitterionic Phospholipid Bilayer Ion Permeation

Application of Fundamental Chemical Principles for Solvation Effects: A Unified Perspective for Interaction Patterns in Solution

Breathable, antifreezing, mechanically skin-like hydrogel textile wound dressings with dual antibacterial mechanisms

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