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Related Concept Videos

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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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Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...
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Block Copolymer Micelles with Inverted Morphologies.

André H Gröschel1,2, Andreas Walther1

  • 1Institut für Makromolekulare Chemie, Albert-Ludwigs-Universität Freiburg, Stefan-Meier-Str. 31, 79104, Freiburg, Germany.

Angewandte Chemie (International Ed. in English)
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PubMed
Summary
This summary is machine-generated.

Highly asymmetric block copolymers form unique microparticles with complex internal structures. These novel structures offer potential for advanced applications in storage and chemical reactions.

Keywords:
block copolymersinverse micellesmesoporous colloidspolymer cubosomesself-assembly

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Area of Science:

  • Polymer Science
  • Materials Science
  • Nanotechnology

Background:

  • Block copolymers are crucial for self-assembly.
  • Controlling morphology in block copolymers is key for advanced materials.
  • Existing methods often yield limited structural diversity.

Purpose of the Study:

  • To explore self-assembly of highly asymmetric block copolymers.
  • To achieve novel inverse morphologies beyond the typical 'crew-cut' regime.
  • To characterize the ordered channel systems within these microparticles.

Main Methods:

  • Synthesis of highly asymmetric block copolymers.
  • Self-assembly studies in solution or thin films.
  • Advanced characterization techniques (e.g., electron microscopy, scattering methods) to determine morphology.

Main Results:

  • Successfully generated microparticles with inverse morphologies.
  • Identified highly ordered channel systems with simple cubic, double diamond, and hexagonally packed hollow-hoop symmetries.
  • Demonstrated self-assembly far beyond the conventional 'crew-cut' limit.

Conclusions:

  • Highly asymmetric block copolymers provide access to unprecedented microparticle architectures.
  • The discovered ordered channel systems are promising for applications.
  • Potential applications include cargo storage, templating, and catalysis.