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Related Concept Videos

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Colloidal precipitates

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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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Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. For example, our feet are chiral, as the mirror image of the left foot, the right foot, cannot be superposed on the left foot.
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High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
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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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Synthesis and Characterization of Supramolecular Colloids
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Customized Chiral Colloids.

Mingzhu Liu1, Fangyuan Dong1, Nicolle S Jackson1

  • 1Molecular Design Institute, Department of Chemistry New York University, New York, New York 10003, United States.

Journal of the American Chemical Society
|September 15, 2020
PubMed
Summary
This summary is machine-generated.

Researchers developed a scalable method to create complex, chiral colloidal molecules with distinct lobes. This versatile platform enables customized particle shapes and functionalities for advanced materials.

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Area of Science:

  • Materials Science
  • Colloid Science
  • Organic Synthesis

Background:

  • Fabricating multicomponent colloidal particles with precise control over morphology and composition remains a challenge.
  • Existing methods often lack scalability or the ability to introduce chirality effectively.

Purpose of the Study:

  • To present a novel synthetic strategy for the scalable fabrication of multicomponent colloidal molecules.
  • To demonstrate the creation of particles with controllable complex morphologies and compositionally distinct lobes.
  • To enable the synthesis of chiral colloidal particles with both geometric and compositional chirality.

Main Methods:

  • Utilizing 3-(trimethoxysilyl)propyl methacrylate (TPM) as a key building block.
  • Employing a sequential seeded growth method for controlled particle assembly.
  • Implementing a bulk synthesis approach for scalability.

Main Results:

  • Successful fabrication of multicomponent colloidal molecules with complex, customizable shapes.
  • Demonstration of geometric and compositional chirality in the synthesized particles.
  • Development of a versatile platform for producing functional colloidal building blocks.

Conclusions:

  • The described synthetic strategy offers a scalable and versatile route to complex colloidal molecules.
  • This methodology has significant potential for applications in advanced materials, including chromatic patchy particles, colloidal swimmers, and chiral optical materials.
  • The findings inform the design principles for programmable self-assembly of colloidal systems.