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Related Concept Videos

Polymers02:34

Polymers

The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the properties that they exhibit. Additionally,...
Polymers02:34

Polymers

The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the properties that they exhibit. Additionally,...
Polymers02:34

Polymers

The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the properties that they exhibit. Additionally,...
Site-Targeted Drug Delivery Systems: Polymeric Carriers01:24

Site-Targeted Drug Delivery Systems: Polymeric Carriers

Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...
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The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
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Characteristics and Nomenclature of Copolymers

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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Related Experiment Video

Updated: Jun 19, 2026

Preparation of Janus Particles and Alternating Current Electrokinetic Measurements with a Rapidly Fabricated Indium Tin Oxide Electrode Array
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Published on: June 23, 2017

Polymeric janus particles.

Frederik Wurm1, Andreas F M Kilbinger

  • 1Johannes Gutenberg-Universität Mainz, Institut für Organische Chemie, Duesbergweg 10-14, 55099 Mainz, Germany.

Angewandte Chemie (International Ed. in English)
|October 3, 2009
PubMed
Summary
This summary is machine-generated.

Research into Janus particles, or asymmetric particles, has significantly advanced since 1991. These particles, with varied surface properties and structures, offer promising, cost-effective synthesis, especially polymeric types.

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Area of Science:

  • Materials Science
  • Colloid Science
  • Nanotechnology

Background:

  • The concept of Janus grains, introduced by de Gennes in 1991, spurred significant research into asymmetric particles.
  • These particles exhibit distinct surface properties (chemical, polar, color) on different regions.
  • A wide range of morphologies (spherical, cylindrical, disc-like, etc.) and compositions (organic, inorganic, hybrid) have been synthesized.

Purpose of the Study:

  • To review the advancements in the synthesis and properties of asymmetric particles.
  • To highlight the potential of polymeric Janus particles for scalable and economical applications.

Main Methods:

  • Synthesis strategies include polymer mixtures, self-assembly of terpolymers, and immobilization of symmetric particles.
  • Various particle shapes and compositions have been achieved through diverse synthetic routes.

Main Results:

  • A broad spectrum of Janus particle structures and material combinations have been successfully created.
  • Polymeric Janus particles demonstrate particular promise due to cost-effectiveness and potential for large-scale production.

Conclusions:

  • The field of asymmetric particle research has expanded considerably, offering diverse structures and synthetic approaches.
  • Polymeric Janus particles represent a particularly advantageous class due to their economic viability and scalability.