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Related Concept Videos

The Colloidal State01:29

The Colloidal State

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The formation of a colloidal system is exemplified by an aqueous solution containing Cl− ions is introduced to another containing Ag+ ions, resulting in the precipitation of solid AgCl as extremely tiny crystals. Instead of settling out as a filterable precipitate, these crystals remain suspended in the liquid, showcasing a colloidal system.A colloidal system involves colloidal particles within the approximate range of 1 to 1000 nm in at least one dimension, dispersed in a medium called...
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Colloids03:22

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Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
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Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles visible to the naked eye or seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. The suspended particles in a suspension settle out after some time of mixing. The separation of particles from a suspension is...
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The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
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Coagulation01:06

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Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
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Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
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Synthesis and Characterization of Supramolecular Colloids
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Solid colloids with surface-mobile linkers.

Stef A J van der Meulen1, Gesa Helms, Marileen Dogterom

  • 1FOM Institute AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|May 21, 2015
PubMed
Summary
This summary is machine-generated.

This review explores using colloids with mobile linkers, particularly lipid bilayers, for studying colloidal self-assembly. These systems can mimic cell interactions and adhesion processes.

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Area of Science:

  • Colloid and Surface Science
  • Biomimetic Materials
  • Self-Assembly

Background:

  • Colloidal self-assembly is crucial for materials science.
  • Mobile linkers on particle surfaces are key to controlling assembly.
  • Lipid bilayers offer a versatile platform for creating mobile linkers.

Purpose of the Study:

  • To review the potential of colloids with surface mobile linkers for studying self-assembly.
  • To explore lipid bilayers as a method for creating mobile linkers.
  • To discuss the application of these systems in mimicking biological interactions.

Main Methods:

  • Utilizing lipid (bi-)layers, including vesicles and coatings for colloids/droplets.
  • Incorporating molecules into lipid bilayers via membrane anchors for mobility.
  • Employing lipid mixtures to create Janus-like particles with directional bonding.

Main Results:

  • Lipid bilayers provide a fluid environment for mobile, anchored molecules.
  • Janus particles with phase-preferring linkers enable directional self-assembly.
  • These engineered colloids can be used to model natural cell-surface interactions.

Conclusions:

  • Colloids with surface mobile linkers, especially those based on lipid bilayers, offer significant potential for controlled self-assembly.
  • The ability to create directional bonding and mimic cellular behavior makes these systems valuable for fundamental research and biomimetic applications.