Specific Ion Effects on Water Structure and Dynamics beyond the First Hydration Shell

2010 ◽  
Vol 50 (2) ◽  
pp. 352-353 ◽  
Author(s):  
Dietmar Paschek ◽  
Ralf Ludwig
Keyword(s):  
Hydration Shell ◽  
Water Structure ◽  
Structure And Dynamics ◽  
Specific Ion Effects ◽  
Ion Effects ◽  
First Hydration Shell

Influence of Counterions on the Interaction of Pyridinium Salts with Model Membranes

1999 ◽  
Vol 54 (11) ◽  
pp. 952-955 ◽  
Author(s):  
Janusz Sarapuk ◽  
Halina Kleszczyńska ◽  
Juliusz Pernak ◽  
Joanna Kalewska ◽  
Bożenna Różycka-Roszak
Keyword(s):  
Lipid Membranes ◽  
Hydration Shell ◽  
Water Structure ◽  
Model Membranes ◽  
Pyridinium Salts ◽  
High Concentration ◽  
Hydrated Ions ◽  
Destructive Action ◽  
Planar Lipid Membranes ◽  
First Hydration Shell

Abstract The interaction of pyridinium salts (PS) with red blood cells and planar lipid membranes was studied. The aim of the work was to find whether certain cationic surfactant counterion influence its possible biological activity. The counterions studied were Cl- , Br-, I-, ClO4-, BF4- and NO3-. The model membranes used were erythrocyte and planar lipid membranes (BLM). At high concentration the salts caused 100% erythrocyte hemolysis (C 100) or broke BLMs (CC). Both parameters describe mechanical properties of model membranes. It was found that the efficiency of the surfactant to destabilize model membranes depended to some degree on its counterion. In both, erythrocyte and BLM experiments, the highest efficiency was observed for Br-, the lowest for NO3-. The influence of all other anions on surfactant efficiency changed between these two extremities; that of chloride and perchlorate ions was similar. Some differences were found in the case o f BF4- ion. Its influence on hemolytic possibilities of PS was significant while BLM destruction required relatively high concentration of this anion. Apparently, the influence of various anions on the destructive action of PS on the model membrane used may be attributed to different mobilities and radii of hydrated ions and hence, to different possibilities of particular anions to modify the surface potential of model membranes. This can lead to a differentiated interaction of PS with modi­fied bilayers. Moreover, the effect of anions on the water structure must be taken into ac­count. It is important whether the anions can be classified as water ordering kosmotropes that hold the first hydration shell tightly or water disordering chaotropes that hold water molecules in that shell loosely.

Specific Ion Effects on Interfacial Water Structure near Macromolecules

2007 ◽  
Vol 129 (40) ◽  
pp. 12272-12279 ◽  
Author(s):  
Xin Chen ◽  
Tinglu Yang ◽  
Sho Kataoka ◽  
Paul S. Cremer
Keyword(s):  
Water Structure ◽  
Interfacial Water ◽  
Specific Ion Effects ◽  
Ion Effects ◽  
Interfacial Water Structure

Specific Ion Effects of Azobenzene Salts on Photoresponse of PNIPAm in Aqueous Solutions

2021 ◽  
pp. 2100232
Author(s):  
Shuang Wei ◽  
Zechuan Zhang ◽  
Weibin Dong ◽  
Ting Liang ◽  
Junyi Ji ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Specific Ion Effects ◽  
Ion Effects

How the particle interaction forces determine soil water infiltration: Specific ion effects

2019 ◽  
Vol 568 ◽  
pp. 492-500 ◽  
Author(s):  
Wuquan Ding ◽  
Xinmin Liu ◽  
Feinan Hu ◽  
Hualing Zhu ◽  
Yaxue Luo ◽  
...  
Keyword(s):  
Soil Water ◽  
Particle Interaction ◽  
Water Infiltration ◽  
Interaction Forces ◽  
Specific Ion Effects ◽  
Soil Water Infiltration ◽  
Ion Effects

Ab initio investigation of the first hydration shell of glucose

2020 ◽  
Vol 496 ◽  
pp. 108114
Author(s):  
Ran Song ◽  
Dong Chen ◽  
Chengxiang Suo ◽  
Zhiheng Guo
Keyword(s):  
Ab Initio ◽  
Hydration Shell ◽  
First Hydration Shell

Structure and Dynamics of the Hydration Shell: Spatially Decomposed Time Correlation Approach

2018 ◽  
Vol 15 (2) ◽  
pp. 803-812 ◽  
Author(s):  
Eva Pluhařová ◽  
Pavel Jungwirth ◽  
Nobuyuki Matubayasi ◽  
Ondrej Marsalek
Keyword(s):  
Hydration Shell ◽  
Time Correlation ◽  
Structure And Dynamics

Specific ion effects in liquids, in biological systems, and at interfaces

2006 ◽  
Vol 78 (8) ◽  
pp. 1611-1617 ◽  
Author(s):  
Werner Kunz
Keyword(s):  
Current Knowledge ◽  
Biological Systems ◽  
Electrolyte Solutions ◽  
Short Review ◽  
Colloidal Systems ◽  
Theoretical Approaches ◽  
Specific Ion Effects ◽  
Ion Effects ◽  
Self Organizing

A short review is given of current knowledge of ion effects in solutions, at interfaces, and in complex colloidal systems. Further to some key experiments, recent and new theoretical approaches are discussed and references of most important papers are given. Finally, an example of a dissipative, self-organizing system involving electrolyte solutions is mentioned.

Sign in / Sign up

Export Citation Format

Share Document