Self-assembly of the mixed systems based on cationic surfactants and different types of polyanions: The influence of structural and concentration factors

2018 ◽  
Vol 272 ◽  
pp. 892-901 ◽  
Author(s):  
E.A. Vasilieva ◽  
D.A. Samarkina ◽  
G.A. Gaynanova ◽  
S.S. Lukashenko ◽  
D.R. Gabdrakhmanov ◽  
...  
Keyword(s):  
Self Assembly ◽  
Cationic Surfactants ◽  
Different Types ◽  
Concentration Factors ◽  
Mixed Systems

Self-assembly of mixed systems based on nonionic and carbamate-bearing cationic surfactants as a tool for fabrication of biocompatible nanocontainers

2019 ◽  
Vol 292 ◽  
pp. 111407 ◽  
Author(s):  
Alla B. Mirgorodskaya ◽  
Rushana A. Kushnazarova ◽  
Svetlana S. Lukashenko ◽  
Lucia Ya. Zakharova
Keyword(s):  
Self Assembly ◽  
Cationic Surfactants ◽  
Mixed Systems

scholarly journals Interactions between an Associative Amphiphilic Block Polyelectrolyte and Surfactants in Water: Effect of Charge Type on Solution Properties and Aggregation

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1729
Author(s):  
Patrizio Raffa
Keyword(s):  
Surface Tension ◽  
Self Assembly ◽  
Interaction Model ◽  
Industrial Applications ◽  
Molecular Organization ◽  
Different Types ◽  
Solution Rheology ◽  
Interesting Class ◽  
First Time

The study of interactions between polyelectrolytes (PE) and surfactants is of great interest for both fundamental and applied research. These mixtures can represent, for example, models of self-assembly and molecular organization in biological systems, but they are also relevant in industrial applications. Amphiphilic block polyelectrolytes represent an interesting class of PE, but their interactions with surfactants have not been extensively explored so far, most studies being restricted to non-associating PE. In this work, interactions between an anionic amphiphilic triblock polyelectrolyte and different types of surfactants bearing respectively negative, positive and no charge, are investigated via surface tension and solution rheology measurements for the first time. It is evidenced that the surfactants have different effects on viscosity and surface tension, depending on their charge type. Micellization of the surfactant is affected by the presence of the polymer in all cases; shear viscosity of polymer solutions decreases in presence of the same charge or nonionic surfactants, while the opposite charge surfactant causes precipitation. This study highlights the importance of the charge type, and the role of the associating hydrophobic block in the PE structure, on the solution behavior of the mixtures. Moreover, a possible interaction model is proposed, based on the obtained data.

2D Self-assembly and Electronic Characterization of Oxygen-Boron-Oxygen-Doped Chiral Graphene Nanoribbons

2021 ◽  
Author(s):  
Lei Jin ◽  
Nerea Bilbao ◽  
Yang Lv ◽  
Xiao-Ye Wang ◽  
Soltani Paniz ◽  
...  
Keyword(s):  
Edge Effects ◽  
Self Assembly ◽  
Quantum Confinement ◽  
Graphene Nanoribbons ◽  
One Dimensional ◽  
The Past ◽  
Different Types

Graphene nanoribbons (GNRs), quasi-one-dimensional strips of graphene, exhibit a nonzero bandgap due to quantum confinement and edge effects. In the past decade, different types of GNRs with atomically precise structures...

scholarly journals Chirality, Gelation Ability and Crystal Structure: Together or Apart? Alkyl Phenyl Ethers of Glycerol as Simple LMWGs

Symmetry ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 732
Author(s):  
Alexander A. Bredikhin ◽  
Aidar T. Gubaidullin ◽  
Zemfira A. Bredikhina ◽  
Robert R. Fayzullin ◽  
Olga A. Lodochnikova
Keyword(s):  
Self Assembly ◽  
Chiral Recognition ◽  
Soft Materials ◽  
Gelling Agent ◽  
Low Molecular Weight ◽  
X Ray Diffraction ◽  
X Ray ◽  
Different Types ◽  
Low Molecular Weight Gelators ◽  
Phenyl Ethers

Chiral recognition plays an important role in the self-assembly of soft materials, in particular supramolecular organogels formed by low molecular weight gelators (LMWGs). Out of 14 pairs of the studied racemic and enantiopure samples of alkyl-substituted phenyl ethers of glycerol, only eight enantiopure diols form the stable gels in nonane. The formation of gels from solutions was studied by polarimetry, and their degradation with the formation of xerogels was studied by the PXRD method. The revealed crystalline characteristics of all studied xerogels corresponded to those for crystalline samples of the parent gelators. In addition to those previously investigated, crystalline samples of enantiopure para-n-alkylphenyl glycerol ethers [alkyl = pentyl (5), hexyl (6), heptyl (7), octyl (8), nonyl (9)] and racemic 3-(3,5-dimethylphenoxy)propane-1,2-diol (rac-14) have been examined by single crystal X-ray diffraction analysis. Among 22 samples of compounds 1-14 studied by SC-XRD, seven different types of supramolecular motifs are identified, of which only two are realized in crystals of supramolecular gelators. An attempt was made to relate the ability to gel formation with the characteristics of the supramolecular motif of a potential gelling agent, and the frequency of formation of the motif, required for gelation, with the chiral characteristics of the sample.

Self-assembled structures of polyhedral gold nanocrystals: shape-directive arrangement and structure-dependent plasmonic enhanced characteristics

RSC Advances ◽  
2016 ◽  
Vol 6 (62) ◽  
pp. 57320-57326 ◽  
Author(s):  
Yanting Liu ◽  
Jun Zhou ◽  
Lu Zhou ◽  
Edwin Yue-Bun Pun ◽  
Tao Jiang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Plasmonic Enhancement ◽  
Casting Method ◽  
Antenna Effect ◽  
Gold Nanocrystals ◽  
Different Types ◽  
Self Assembled

Self-assembly structures of different types of polyhedral nanocrystals through drop casting method and their plasmonic enhancement characteristics and SERS performances due to the nano-antenna effect.

Nanostructuring of diamond films using self-assembled nanoparticles

Open Physics ◽  
2009 ◽  
Vol 7 (2) ◽  
Author(s):  
Oleg Babchenko ◽  
Alexander Kromka ◽  
Karel Hruska ◽  
Miroslav Michalka ◽  
Jiri Potmesil ◽  
...  
Keyword(s):  
Plasma Etching ◽  
Self Assembly ◽  
Diamond Films ◽  
Diamond Powder ◽  
Gas Mixture ◽  
Assembly Strategy ◽  
Nano Structures ◽  
Mask Type ◽  
Different Types ◽  
Nano Rods

AbstractWe report the use of gold, nickel and diamond nanoparticles as a masking material for realization of diamond nano-structures by applying the dry plasma etching process. Applying low power plasma (100 W) in a gas mixture of CF4/O2 for 5 minutes results in a formation of three different types of diamond nanostructures, depending on the mask type material and particle size. Using of the Ni mask results in realization of diamond nano-rods, applying of the Au mask brings cauliflower-like structures, and using the diamond powder allows the production of irregular nano-structures. The main advance of the presented etching procedure is use of a self-assembly strategy where no lithographic steps are implemented.

scholarly journals Recent Progress in Hydrogen-Bonded π-Conjugated Systems Displaying J-Type Aggregates

2020 ◽  
Vol 02 (01) ◽  
pp. 047-063 ◽  
Author(s):  
Nelson Ricardo Ávila-Rovelo ◽  
Amparo Ruiz-Carretero
Keyword(s):  
Hydrogen Bonding ◽  
Self Assembly ◽  
Noncovalent Interactions ◽  
Functional Materials ◽  
Organic Electronic Devices ◽  
Conjugated Systems ◽  
Hydrogen Bonding Interactions ◽  
Different Types ◽  
J Aggregates ◽  
Additional Hydrogen

Supramolecular approaches are of great interest in the design of functional materials. The types of aggregates arising from different noncovalent interactions endow materials with intriguing properties. In this sense, J-type aggregates are very attractive due to their unique optical properties and capacity to transport excitons. These features make them great candidates in the design of materials for organic electronic devices. Furthermore, the incorporation of additional hydrogen-bonding functionalities provides J-aggregates with superior directionality and connection among the different π-conjugated cores. The control over the formation of H-bonds to achieve functional aggregates is therefore a promising strategy towards controlled structures with specific functions.This review outlines the most relevant and recent works of π-conjugated systems exhibiting J-type aggregates resulting from hydrogen-bonding interactions. Different types of hydrogen-bonding functionalities will be discussed together with their roles in the aggregate properties, their impact in the optoelectronic properties, the self-assembly mechanisms, and their applications in organic electronics.

Synthesis and self-assembly behaviours of side-chain smectic thiol–ene polymers based on the polysiloxane backbone

2016 ◽  
Vol 4 (7) ◽  
pp. 1425-1440 ◽  
Author(s):  
Wenhuan Yao ◽  
Yanzi Gao ◽  
Xiao Yuan ◽  
Baofeng He ◽  
Haifeng Yu ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Click Chemistry ◽  
Self Assembly ◽  
Side Chain ◽  
Liquid Crystal Polymers ◽  
Different Types

A series of novel chiral polysiloxane side chain liquid crystal polymers (PSCLCPs) with two different types of LC phases and three self-assembly arrangements were successfully synthesized via thiol–ene click chemistry.

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