Primitive models of patchy colloidal particles. A review

2010 ◽  
Vol 75 (3) ◽  
pp. 349-358 ◽  
Author(s):  
Francesco Sciortino
Keyword(s):  
Phase Behavior ◽  
Self Assembly ◽  
Liquid State ◽  
Soft Matter ◽  
Colloidal Particles ◽  
The Self ◽  
Seminal Work ◽  
Colloid Interactions ◽  
Physical And Chemical

In this article I will review some recent studies of the phase behavior and of the self-assembly of patchy colloidal particles. These studies have been based on simple primitive models for colloid–colloid interactions, effectively extending to soft matter the seminal work of I. Nezbeda on associated fluids. I will discuss the possibilities offered by the study of the self-assembly of particles with limited valence in deepening our understanding of the onset of the liquid state, of the differences between gels and glasses and of the possible connection between physical and chemical gels. A review with 55 references.

scholarly journals Driving dynamic colloidal assembly using eccentric self-propelled colloids

Soft Matter ◽  
2017 ◽  
Vol 13 (47) ◽  
pp. 8940-8946 ◽  
Author(s):  
Zhan Ma ◽  
Qun-li Lei ◽  
Ran Ni
Keyword(s):  
Self Assembly ◽  
Soft Matter ◽  
Colloidal Particles ◽  
Functional Materials ◽  
The Self ◽  
Driving Dynamic ◽  
Colloidal Assembly ◽  
Important Direction ◽  
Soft Matter Physics

Designing protocols to dynamically direct the self-assembly of colloidal particles has become an important direction in soft matter physics because of promising applications in the fabrication of dynamic responsive functional materials.

scholarly journals Self-Assembly of Shape-Tunable Oblate Colloidal Particles into Orientationally Ordered Crystals, Glassy Crystals and Plastic Crystals

Soft Matter ◽  
2021 ◽  
Author(s):  
Jiawei Lu ◽  
Xiangyu Bu ◽  
Xinghua Zhang ◽  
Bing Liu
Keyword(s):  
Crystal Structures ◽  
Self Assembly ◽  
Colloidal Particles ◽  
Building Blocks ◽  
Fundamental Question ◽  
The Self ◽  
Plastic Crystals ◽  
Self Assembled ◽  
Glassy Crystals ◽  
The Relationship

The shapes of colloidal particles are crucial to the self-assembled superstructures. Understanding the relationship between the shapes of building blocks and the resulting crystal structures is an important fundamental question....

scholarly journals Changes in physical and chemical properties of niosome membrane induced by cholesterol: a promising approach for niosome bilayer intervention

RSC Advances ◽  
2017 ◽  
Vol 7 (78) ◽  
pp. 49463-49472 ◽  
Author(s):  
Mohammad Hadi Nematollahi ◽  
Abbas Pardakhty ◽  
Masoud Torkzadeh-Mahanai ◽  
Mehrnaz Mehrabani ◽  
Gholamreza Asadikaram
Keyword(s):  
Self Assembly ◽  
Nonionic Surfactants ◽  
Chemical Properties ◽  
The Self ◽  
Physical And Chemical Properties ◽  
Physical And Chemical ◽  
And Chemical Properties

Recently, the self-assembly property of nonionic surfactants has been utilized to create vesicles as alternatives to liposomes.

Melatonin-directed micellization: a case for tryptophan metabolites and their classical bioisosteres as templates for the self-assembly of bipyridinium-based supramolecular amphiphiles in water

Soft Matter ◽  
2018 ◽  
Vol 14 (15) ◽  
pp. 2893-2905 ◽  
Author(s):  
Zhenzhen Wang ◽  
Hui Cui ◽  
Zhimin Sun ◽  
Loïc M. Roch ◽  
Amanda N. Goldner ◽  
...  
Keyword(s):  
Self Assembly ◽  
Soft Matter ◽  
The Self ◽  
Structure Property ◽  
Property Analysis ◽  
Tryptophan Metabolites ◽  
Supramolecular Amphiphiles

A structure–property analysis of two tryptamine-derivatives augers well for templation of soft matter assemblies by l-tryptophan-based metabolites.

scholarly journals A nanotube-mediated path to protocell formation

2018 ◽  
Author(s):  
Elif Senem Köksal ◽  
Susanne Liese ◽  
Ilayda Kantarci ◽  
Ragni Olsson ◽  
Andreas Carlson ◽  
...  
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Solid Surfaces ◽  
Mechanical Agitation ◽  
Spontaneous Transformation ◽  
Electrical Currents ◽  
Membrane Compartments ◽  
Cellular Compartments ◽  
External Stimuli ◽  
Physical And Chemical

AbstractCellular compartments are membrane-enclosed, spatially distinct microenvironments which confine and protect biochemical reactions in the biological cell. On the early Earth, the autonomous formation of compartments is thought to have led to the encapsulation of nucleotides, thereby satisfying a starting condition for the emergence of life. Recently, surfaces have come into focus as potential platforms for the self-assembly of prebiotic compartments, as significantly enhanced vesicle formation was reported in the presence of solid interfaces. The detailed mechanism of such formation at the mesoscale is still under discussion. We report here on the spontaneous transformation of solid surface-adhered lipid deposits to unilamellar membrane compartments through a straightforward sequence of topological changes, proceeding via a network of interconnected lipid nanotubes. We show that this transformation is entirely driven by surface-free energy minimization and does not require hydrolysis of organic molecules, or external stimuli such as electrical currents or mechanical agitation. The vesicular structures take up and encapsulate their external environment during formation, and can subsequently separate and migrate upon exposure to hydrodynamic flow. This may link, for the first time, the self-directed transition from weakly organized bioamphiphile assemblies on solid surfaces to protocells with secluded internal contents.SignificanceThe nature of the physical and chemical mechanisms behind the formation, growth and division of the earliest protocells is among the key questions concerning the origin of life. Establishing a simple pathway for the assembly of protocell structures from the primordial soup is a particular challenge. Emerging evidence supporting the assumption that solid surfaces have a governing role in protocell formation has recently expanded the scope, and created new inspiration for investigation. By presenting a physical path from self-assembled amphiphile-based membranes on solid surfaces to spherical single-membrane compartments via a consistent sequence of transformations, solely driven by the materials properties of the interfaces, a direct link between the presence of functional biomolecules and the development of protocells can be established.

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.

Framboid Self-Assembly and Self-Organization

2021 ◽  
pp. 262-282
Author(s):  
David Rickard
Keyword(s):  
Self Assembly ◽  
Energy Minimization ◽  
Short Range ◽  
Colloidal Particles ◽  
Repulsive Force ◽  
The Self ◽  
Icosahedral Symmetry ◽  
Entropy Maximization ◽  
Close Packed Structure ◽  
Packed Structure

The formation of framboids involves two distinct processes. First, pyrite microcrystals aggregate into spherical groups through surface free energy minimization. The self-assembly of framboid microcrystals to form framboids is consistent with estimations based on the classical Derjaguin-Landau-Verwey-Overbeek (DVLO) theory, which balances the attraction between particles due to the van der Waals forces against the interparticle electrostatic repulsive force. Second, the microcrystals rearrange themselves into ordered domains through entropy maximization. Icosahedral symmetry tends to minimize short-range attractive interactions and maximize entropy. The physical processes which facilitate this rearrangement are Brownian motion and surface interactions. Curved framboid interface enforce deviation from the cubic close packed structure. In the absence of a curved surface, weakly interacting colloidal particles preferentially self-assemble into a cubic close packed structure, and this is observed in irregular, non-framboidal aggregates of pyrite micro- and nanocrystals.

scholarly journals Shaping colloidal bananas to reveal biaxial, splay-bend nematic, and smectic phases

Science ◽  
2020 ◽  
Vol 369 (6506) ◽  
pp. 950-955
Author(s):  
Carla Fernández-Rico ◽  
Massimiliano Chiappini ◽  
Taiki Yanagishima ◽  
Heidi de Sousa ◽  
Dirk G. A. L. Aarts ◽  
...  
Keyword(s):  
Phase Behavior ◽  
Self Assembly ◽  
Colloidal Particles ◽  
Functional Materials ◽  
Building Blocks ◽  
Develop Model ◽  
Smectic Phases ◽  
Particle Level ◽  
Nematic Phases ◽  
The Impact

Understanding the impact of curvature on the self-assembly of elongated microscopic building blocks, such as molecules and proteins, is key to engineering functional materials with predesigned structure. We develop model “banana-shaped” colloidal particles with tunable dimensions and curvature, whose structure and dynamics are accessible at the particle level. By heating initially straight rods made of SU-8 photoresist, we induce a controllable shape deformation that causes the rods to buckle into banana-shaped particles. We elucidate the phase behavior of differently curved colloidal bananas using confocal microscopy. Although highly curved bananas only form isotropic phases, less curved bananas exhibit very rich phase behavior, including biaxial nematic phases, polar and antipolar smectic-like phases, and even the long-predicted, elusive splay-bend nematic phase.

Influence of Specific Intermolecular Interactions on the Self-Assembly and Phase Behavior of Oligo(Ethylene Glycol)-Terminated Alkanethiolates on Gold

2001 ◽  
Vol 105 (23) ◽  
pp. 5459-5469 ◽  
Author(s):  
Ramūnas Valiokas ◽  
Sofia Svedhem ◽  
Mattias Östblom ◽  
Stefan C. T. Svensson ◽  
Bo Liedberg
Keyword(s):  
Ethylene Glycol ◽  
Phase Behavior ◽  
Intermolecular Interactions ◽  
Self Assembly ◽  
The Self
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