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Related Concept Videos

The Colloidal State01:29

The Colloidal State

35
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...
35
Colloidal precipitates01:09

Colloidal precipitates

6.6K
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...
6.6K
Colloids03:22

Colloids

21.7K
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...
21.7K
Coagulation01:06

Coagulation

1.6K
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...
1.6K
Colloids and Suspensions01:17

Colloids and Suspensions

3.7K
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...
3.7K
Precipitate Formation and Particle Size Control01:16

Precipitate Formation and Particle Size Control

7.0K
In precipitation gravimetry, the precipitating agent should react specifically or selectively with the analyte. While a specific reagent reacts with the analyte alone, a selective reagent can react with a limited number of chemical species.
The obtained precipitate should be either a pure substance of known composition or easily converted to one by a simple process, such as ignition or drying. In addition, the precipitate should be insoluble and easily filterable. In general, filterability...
7.0K

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Related Experiment Video

Updated: Mar 5, 2026

Synthesis and Characterization of Supramolecular Colloids
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Synthesis and Characterization of Supramolecular Colloids

Published on: April 22, 2016

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Molecular control over colloidal assembly.

M Gerth1, I K Voets

  • 1Laboratory of Physical Chemistry, and Institute of Complex Molecular Systems, Eindhoven University of Technology, P.O. Box 513, 5600 MD, Eindhoven, The Netherlands.

Chemical Communications (Cambridge, England)
|March 30, 2017
PubMed
Summary
This summary is machine-generated.

Researchers are creating advanced functional materials inspired by nature. By controlling molecular interactions, they can guide the assembly of materials with tunable mechanical, optical, or electrical properties for diverse applications.

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Synthesis and Characterization of Supramolecular Colloids
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Area of Science:

  • Chemical Engineering
  • Materials Science
  • Nanotechnology

Background:

  • Nature inspires the design of advanced materials with hierarchical structures for applications in sensing, catalysis, and coatings.
  • Synthesizing these materials requires precise control over building block interactions and assembly pathways.

Purpose of the Study:

  • To showcase how molecular control can direct colloidal assembly.
  • To demonstrate the creation of responsive functional materials with tunable properties.

Main Methods:

  • Exploiting molecular control in bottom-up assembly.
  • Utilizing colloidal assembly of synthetic building blocks.

Main Results:

  • Achieved precise control over material synthesis and assembly.
  • Developed responsive materials with adjustable mechanical, optical, or electrical properties.

Conclusions:

  • Molecular control is key to directing colloidal assembly for functional materials.
  • Externally tunable properties open new avenues for advanced material applications.