scholarly journals Unexpected Dual Action of Cetyltrimethylammonium Bromide (CTAB) in the Self‐Assembly of Colloidal Nanoparticles at Liquid–Liquid Interfaces

2020 ◽  
Vol 7 (14) ◽  
pp. 2000391 ◽  
Author(s):  
Chunchun Li ◽  
Yikai Xu ◽  
Xinyuan Li ◽  
Ziwei Ye ◽  
Chaoyi Yao ◽  
...  
Keyword(s):  
Self Assembly ◽  
Cetyltrimethylammonium Bromide ◽  
The Self ◽  
Colloidal Nanoparticles ◽  
Liquid Interfaces ◽  
Dual Action

Chiral Plasmonic Nanochains via the Self-Assembly of Gold Nanorods and Helical Glutathione Oligomers Facilitated by Cetyltrimethylammonium Bromide Micelles

ACS Nano ◽  
2017 ◽  
Vol 11 (4) ◽  
pp. 3463-3475 ◽  
Author(s):  
Jun Lu ◽  
Yi-Xin Chang ◽  
Ning-Ning Zhang ◽  
Ying Wei ◽  
Ai-Ju Li ◽  
...  
Keyword(s):  
Gold Nanorods ◽  
Self Assembly ◽  
Cetyltrimethylammonium Bromide ◽  
The Self

Nonsolvent induced reconfigurable bonding configurations of ligands in nanoparticle purification

2019 ◽  
Vol 4 (6) ◽  
pp. 1416-1424 ◽  
Author(s):  
Jun Zhang ◽  
Falin Tian ◽  
Min Zhang ◽  
Tiefeng Li ◽  
Xueqian Kong ◽  
...  
Keyword(s):  
Self Assembly ◽  
Soft Matter ◽  
Organic Ligands ◽  
The Self ◽  
Colloidal Nanoparticles ◽  
Assembly Behavior

The geometry of the organic ligands on colloidal nanoparticles (NPs) is central for understanding the self-assembly behavior and many properties of NP-based soft matter.

scholarly journals Cationic Niosomes as Non-Viral Vehicles for Nucleic Acids: Challenges and Opportunities in Gene Delivery

Pharmaceutics ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 50 ◽  
Author(s):  
Santiago Grijalvo ◽  
Gustavo Puras ◽  
Jon Zárate ◽  
Myriam Sainz-Ramos ◽  
Nuseibah A. L. Qtaish ◽  
...  
Keyword(s):  
Gene Delivery ◽  
Self Assembly ◽  
Antisense Oligonucleotides ◽  
The Self ◽  
Ionic Surfactant ◽  
Colloidal Nanoparticles ◽  
Drug Molecules ◽  
Challenges And Opportunities ◽  
Good Number ◽  
Cationic Niosomes

Cationic niosomes have become important non-viral vehicles for transporting a good number of small drug molecules and macromolecules. Growing interest shown by these colloidal nanoparticles in therapy is determined by their structural similarities to liposomes. Cationic niosomes are usually obtained from the self-assembly of non-ionic surfactant molecules. This process can be governed not only by the nature of such surfactants but also by others factors like the presence of additives, formulation preparation and properties of the encapsulated hydrophobic or hydrophilic molecules. This review is aimed at providing recent information for using cationic niosomes for gene delivery purposes with particular emphasis on improving the transportation of antisense oligonucleotides (ASOs), small interference RNAs (siRNAs), aptamers and plasmids (pDNA).

scholarly journals Self-assembly and wetting properties of gold nanorod–CTAB molecules on HOPG

2019 ◽  
Vol 10 ◽  
pp. 696-705 ◽  
Author(s):  
Imtiaz Ahmad ◽  
Floor Derkink ◽  
Tim Boulogne ◽  
Pantelis Bampoulis ◽  
Harold J W Zandvliet ◽  
...  
Keyword(s):  
Self Assembly ◽  
Cetyltrimethylammonium Bromide ◽  
Pyrolytic Graphite ◽  
The Self ◽  
Gold Nanorod ◽  
Force Microscopy ◽  
Wetting Properties ◽  
Atomic Force ◽  
Highly Ordered Pyrolytic Graphite ◽  
Self Assembled

The formation of self-assembled superstructures of cetyltrimethylammonium bromide (CTAB) after drying on a nonwetting highly ordered pyrolytic graphite (HOPG) surface have been investigated using scanning electron microscopy (SEM) and atomic force microscopy (AFM). Although SEM did not reveal coverage of CTAB layers, AFM showed not only CTAB assembly, but also the dynamics of the process on the surface. The self-assembled layers of CTAB molecules on the HOPG terraces prior to nanorod deposition were shown to change the wettability of the surface, and as a result, gold nanorod deposition takes place on nonwetting HOPG terraces.

The self assembly of thymine at Au(110)/liquid interfaces

2012 ◽  
Vol 249 (6) ◽  
pp. 1206-1209 ◽  
Author(s):  
J. R. Molina Contreras ◽  
C. I. Smith ◽  
A. Bowfield ◽  
F. Tillner ◽  
P. Weightman
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Liquid Interfaces

scholarly journals Programmable Self-Assembly of Gold Nanoarrows via Regioselective Adsorption

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Cheng Chen ◽  
Liheng Zheng ◽  
Fucheng Guo ◽  
Zheyu Fang ◽  
Limin Qi
Keyword(s):  
Self Assembly ◽  
Building Blocks ◽  
The Self ◽  
Colloidal Nanoparticles ◽  
Local Curvature ◽  
Shape Complementarity ◽  
Regioselective Functionalization ◽  
Geometric Morphology ◽  
Multiple Assembly

Programing the self-assembly of colloidal nanoparticles into predetermined superstructures represents an attractive strategy to realize functional assemblies and novel nanodevices, but it remains a challenge. Herein, gold nanoarrows (GNAs) showing a distinct convex-concave structure were employed as unique building blocks for programmable self-assembly involving multiple assembly modes. Regioselective adsorption of 1,10-decanedithiol on the vertexes, edges, and facets of GNAs allowed for programmable self-assembly of GNAs with five distinct assembly modes, and regioselective blocking with 1-dodecanethiol followed by adsorption of 1,10-decanedithiol gave rise to programmable self-assembly with six assembly modes including three novel wing-engaged modes. The assembly mode was essentially determined by regioselective adsorption of the dithiol linker dictated by the local curvature together with the shape complementarity of GNAs. This approach reveals how the geometric morphology of nanoparticles affects their regioselective functionalization and drives their self-assembly.

Using DNA to program the self-assembly of colloidal nanoparticles and microparticles

2016 ◽  
Vol 1 (3) ◽  
Author(s):  
W. Benjamin Rogers ◽  
William M. Shih ◽  
Vinothan N. Manoharan
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Colloidal Nanoparticles

Self-Assembly of Monolayers of Mixtures of Particles

2016 ◽  
Author(s):  
Edison C. Amah ◽  
Naga Musunuri ◽  
Ian S. Fischer ◽  
Pushpendra Singh ◽  
Md. Shahadat Hossain
Keyword(s):  
Electric Field ◽  
Field Intensity ◽  
Self Assembly ◽  
Electric Field Intensity ◽  
Composite Particle ◽  
The Self ◽  
The Other ◽  
Composite Particles ◽  
Liquid Interfaces ◽  
Number Of Particles

We have numerically studied the self-assembly process of particle mixtures on fluid-liquid interfaces when an electric field is applied in the direction normal to the interface. The electric and capillary forces on the particles causes them to self-assemble into molecular-like hierarchical arrangements consisting of composite particles arranged in a pattern. As in experiments, the structure of a composite particle depends on factors such as the relative sizes of the particles and their polarizibilities, and the electric field intensity. If the particles sizes differ by a factor of two or more, the composite particle has a larger particle at its core and several smaller particles forming a ring around it. The number of particles in the ring and the spacing between the composite particles depends on their relative polarizibilities, the size of the smaller particles and the electric field intensity. Approximately same sized particles, on the other hand, form chains (analogous to polymeric molecules) in which positively and negatively polarized particles alternate.

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