Two-Component Self-Assembly: Hierarchical Formation of pH-Switchable Supramolecular Networks by π-π Induced Aggregation of Ion Pairs

2016 ◽  
Vol 22 (43) ◽  
pp. 15242-15247 ◽  
Author(s):  
Krishnananda Samanta ◽  
Martin Ehlers ◽  
Carsten Schmuck
Keyword(s):  
Self Assembly ◽  
Ion Pairs ◽  
Two Component ◽  
Supramolecular Networks ◽  
Induced Aggregation

Two-component self-assembly of a tetra-guanidiniocarbonyl pyrrole cation and Na4EDTA: formation of pH switchable supramolecular networks

2015 ◽  
Vol 51 (89) ◽  
pp. 16065-16067 ◽  
Author(s):  
K. Samanta ◽  
C. Schmuck
Keyword(s):  
Self Assembly ◽  
Two Component ◽  
Supramolecular Networks

Two-component self-assembly of a tetra-guanidiniocarbonyl pyrrole cation 1 and Na4EDTA leads to 3D supramolecular networks which exhibit dual pH responsiveness.

Decomposition of hydrogen peroxide on cerium dioxide-nickel oxide two-component catalysts and the effect of ionizing radiation on them

1984 ◽  
Vol 49 (1) ◽  
pp. 14-24 ◽  
Author(s):  
Viliam Múčka
Keyword(s):  
Heat Treatment ◽  
Hydrogen Peroxide ◽  
Ionizing Radiation ◽  
Nickel Oxide ◽  
Cerium Dioxide ◽  
Catalytic Properties ◽  
Specific Activity ◽  
Ion Pairs ◽  
Composition Region ◽  
Two Component

Some physical and catalytic properties of cerium dioxide-nickel oxide two-component catalysts have been studied over the entire composition region, employing the decomposition of hydrogen peroxide in aqueous solution as a model catalytic process. The two oxides have been found to affect each other, particularly for NiO contents of 9.1 and 96.7 mol%; the mutual influencing, the nature of which in the conditions applied remains unaffected by heat treatment of the sample or by its exposition to ionizing radiation, is manifested by the nonmonotonic dependences of the oxidation power and of the specific activity of the catalysts on their composition. This can be interpreted in terms of the concept of bivalent catalytic centres, assuming that for nickel oxide the centres consist of Ni2+-Ni3+ ion pairs, for cerium dioxide they consist of Ce3+-Ce4+ ion pairs, and that in the region of the mutual influencing , Ni2+-Ce4+ ion pairs play a major role. Within the scope of this concept, the increase in the oxidation power of all the catalysts in question and a simultaneously decrease in the specific activity of the pure nickeloxide exposed to ionizing radiation can be explained in terms of the ionization effect.

The effect of ion pairs on coacervate-driven self-assembly of block polyelectrolytes

2021 ◽  
Vol 154 (14) ◽  
pp. 144903
Author(s):  
Jiadi Jiang ◽  
Er-Qiang Chen ◽  
Shuang Yang
Keyword(s):  
Self Assembly ◽  
Ion Pairs

scholarly journals Variation of Interaction Zone Size For The Target Design of 2D Supramolecular Networks

2021 ◽  
Author(s):  
Łukasz Piotr Baran ◽  
Wojciech Rżysko ◽  
Dariusz Tarasewicz
Keyword(s):  
Molecular Dynamics ◽  
Molecular Dynamics Simulations ◽  
Self Assembly ◽  
The Self ◽  
Coarse Grained ◽  
Zone Size ◽  
Interaction Zone ◽  
Supramolecular Networks ◽  
Dynamics Simulations ◽  
Target Design

In this study we have performed extensive coarse-grained molecular dynamics simulations of the self-assembly of tetra-substituted molecules. We have found that such molecules are able to form a variety of...

Gold Nanoparticle Self-Assembly in Two-Component Lipid Langmuir Monolayers†

Langmuir ◽  
2011 ◽  
Vol 27 (4) ◽  
pp. 1260-1268 ◽  
Author(s):  
Alina Mogilevsky ◽  
Raz Jelinek
Keyword(s):  
Gold Nanoparticle ◽  
Self Assembly ◽  
Langmuir Monolayers ◽  
Two Component

Preparation and self-assembly of two-component organogels via hexafluoropropane amino derivative and different acids

2017 ◽  
Vol 182 (1) ◽  
pp. 75-83 ◽  
Author(s):  
Shengwei Huo ◽  
Tifeng Jiao ◽  
Lexin Zhang ◽  
Rong Guo ◽  
Yong Xiao ◽  
...  
Keyword(s):  
Self Assembly ◽  
Amino Derivative ◽  
Two Component

Induction of a cholesteric phase via self-assembly in supramolecular networks built of non-mesomorphic molecular components

1998 ◽  
Vol 24 (3) ◽  
pp. 413-418 ◽  
Author(s):  
HIDEYUKI KIHARA ◽  
TAKASHI KATO ◽  
TOSHIYUKI URYU ◽  
JEAN M. J. FRECHET
Keyword(s):  
Self Assembly ◽  
Cholesteric Phase ◽  
Supramolecular Networks ◽  
Molecular Components

scholarly journals A facile preparation method for new two-component supramolecular hydrogels and their performances in adsorption, catalysis, and stimuli-response

RSC Advances ◽  
2019 ◽  
Vol 9 (39) ◽  
pp. 22551-22558 ◽  
Author(s):  
Junlin Zhu ◽  
Ran Wang ◽  
Rui Geng ◽  
Xuan Zhang ◽  
Fan Wang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Preparation Method ◽  
Assembly Process ◽  
Two Component ◽  
Potential Applications ◽  
Stimuli Response ◽  
Facile Preparation ◽  
Sensor Materials

New two-component supramolecular hydrogels were prepared via a self-assembly process, demonstrating potential applications in adsorption and catalysis as well as sensor materials.

scholarly journals Functional properties ensue from cooperation of different interactions

2014 ◽  
Vol 70 (a1) ◽  
pp. C630-C630
Author(s):  
Giuseppe Resnati ◽  
Pierangelo Metrangolo ◽  
Giancarlo Terraneo ◽  
Gabriella Cavallo
Keyword(s):  
Hydrogen Bond ◽  
Self Assembly ◽  
Halogen Atom ◽  
Crystal Packing ◽  
Halogen Bond ◽  
Decisive Role ◽  
Solid Materials ◽  
Two Component ◽  
Confined Environment ◽  
Specific Profile

According to the definition recommended by IUPAC [1], a halogen bond (XB) occurs when there is evidence of a net attractive interaction between an electrophilic region in a halogen atom and a nucleophilic region in another atom. The halogen bond has many similarities with the hydrogen bond (HB) and here we discuss the specific profile of the two interactions. We also show how the cooperation between the two interactions afford crystalline systems possessing unique and useful properties. For instance, the diiodide, dibromide, and dichloride salts of the 1,6-bis(trimethylammonium)hexane cation (hexamethonium, HMET2+, cation) react with two equivalents of diiodine in a solid-gas reaction and the corresponding bis-trihalides (halogen bonded adducts) are formed [2]. No cavities are present in the starting dihalides and the observed behavior reveals the dynamically porous character of bis(trimethylammonium)alkane dihalides. In the obtained bis-trihalides a net of X-···H-C HBs (X=Cl, Br, I) plays a decisive role in controlling the crystal packing: Four cationic columns embrace an anionic twin column formed by stacking of trihalide dimers. When heated, these bis-trihalides lose one diiodine molecule and the virtually unknown tetrahalide dianions [I4]2-, [I2Br2] 2-, and [I2Cl2]2-are formed. These dianions are the product of the double pinning of a diiodine molecule by two halide anions via strong XBs. The last two tetrahalides were never obtained in solution. The confined environment of dynamically porous materials clearly confers useful synthetic opportunities relative to solution-state processes. Other cases are described wherein XB and HB cooperate in driving self-assembly processes which afford solid materials endowed with useful properties. For instance, we will discuss the formation of two-component supramolecular gels [3] wherein a bis-urea and a diiodoarene self-assemble via cooperative XB and HB.

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