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Related Concept Videos

Micelles01:30

Micelles

Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...
Colloids03:22

Colloids

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...
Surface Active Agents01:27

Surface Active Agents

Surfactants, named for their behavior at interfaces, positively adsorb at the interfaces of two phases, reducing interfacial tension. Their versatility as emulsifiers, detergents, and foaming agents stems from this ability. Surfactants, often termed amphiphiles, share the property of amphipathy, with molecules having both hydrophilic and hydrophobic portions. The hydrophilic part is called the head, and the hydrophobic part, including an elongated alkyl substituent, forms the tail.Surfactants...
Membrane Asymmetry Regulating Transporters01:19

Membrane Asymmetry Regulating Transporters

Enzymes like flippase, floppase, and scramblase transfer phospholipids from one layer to another in the membrane, thereby affecting membrane asymmetry.
Flippase
Eukaryotic flippases are type-IV P-type ATPases or P4-ATPases belonging to P-type ATPase family proteins that are membrane-bound pumps involved in the ATP-mediated transport of ions and molecules across the membrane. Flippases flip specific phospholipids from the outer to the inner leaflet of a membrane. All P4-ATPases have one...
SNAREs and Membrane Fusion01:43

SNAREs and Membrane Fusion

Once a transport vesicle has recognized its target organelle, the vesicular membrane needs to fuse with the target membrane to unload the cargo. Transmembrane proteins called SNAREs present on organelle membranes and their vesicles, mediate vesicle fusion.
SNAREs exist in pairs that symmetrically interact and catalyze the fusion of the lipid bilayers in vesicle and target organelle. v-SNARE in the vesicle membrane are single polypeptide chains that bind to a complementary t-SNARE, composed of 2...
Asymmetric Lipid Bilayer01:35

Asymmetric Lipid Bilayer

Biological membranes show uneven distribution of different types of lipids in the inner and outer layers, resulting in transverse asymmetric membranes. The treatment of the erythrocyte membrane with the enzyme phospholipase confirmed the asymmetric nature of the lipid bilayer. The enzyme hydrolyzes lipids into fatty acids and hydrophilic groups. The phospholipase acts only on the outer layer of the membrane, while the inner layer remains intact. The phospholipase treatment resulted in 80%...

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Related Experiment Video

Updated: Jun 7, 2026

Facile Synthesis of Worm-like Micelles by Visible Light Mediated Dispersion Polymerization Using Photoredox Catalyst
07:39

Facile Synthesis of Worm-like Micelles by Visible Light Mediated Dispersion Polymerization Using Photoredox Catalyst

Published on: June 8, 2016

pH-switchable wormlike micelles.

Zonglin Chu1, Yujun Feng

  • 1Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, P. R. China.

Chemical Communications (Cambridge, England)
|November 6, 2010
PubMed
Summary
This summary is machine-generated.

Researchers developed a pH-switchable wormlike micellar system using N-erucamidopropyl-N,N-dimethylamine and maleic acid. This system allows for rapid, reversible viscosity control by adjusting pH with minimal acid or base.

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Last Updated: Jun 7, 2026

Facile Synthesis of Worm-like Micelles by Visible Light Mediated Dispersion Polymerization Using Photoredox Catalyst
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Published on: June 8, 2016

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Fabrication of Spherical and Worm-shaped Micellar Nanocrystals by Combining Electrospray, Self-assembly, and Solvent-based Structure Control
06:16

Fabrication of Spherical and Worm-shaped Micellar Nanocrystals by Combining Electrospray, Self-assembly, and Solvent-based Structure Control

Published on: February 11, 2018

Area of Science:

  • Materials Science
  • Colloid and Surface Chemistry

Background:

  • Wormlike micelles are versatile supramolecular structures with tunable properties.
  • Controlling micellar solution viscosity is crucial for various applications, including drug delivery and enhanced oil recovery.
  • Existing methods for viscosity control can be complex, costly, or irreversible.

Purpose of the Study:

  • To develop a novel, pH-switchable wormlike micellar system.
  • To demonstrate the facile and reversible control of micellar solution viscosity.
  • To highlight the cost-effectiveness and recyclability of the developed system.

Main Methods:

  • Preparation of wormlike micelles by mixing N-erucamidopropyl-N,N-dimethylamine and maleic acid in a 2:1 molar ratio.
  • Tuning the pH of the micellar solution through the addition of small amounts of acid or base.
  • Monitoring and characterizing the changes in solution viscosity in response to pH variations.

Main Results:

  • A stable wormlike micellar system was successfully prepared.
  • The viscosity of the micellar solution was reversibly switched by adjusting the pH.
  • The pH-induced viscosity switching was rapid, facile, and repeatable.
  • The system utilizes cost-effective and recyclable materials.

Conclusions:

  • A novel and efficient pH-switchable wormlike micellar system has been developed.
  • This system offers a simple, rapid, and cost-effective method for controlling viscosity.
  • The reversible nature and use of recyclable materials make this system environmentally and economically attractive for potential applications.