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Micelles

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...

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Updated: May 1, 2026

Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions

Anionic Polymerization of an Amphiphilic Copolymer for Preparation of Block Copolymer Micelles Stabilized by π-π Stacking Interactions

Published on: October 10, 2016

Dynamic Electrostatic Interfacial Engineering for Block Copolymer Microparticles with Reversible Structures.

Mengmeng Zhang¹, Quanyong Cheng¹, Guoqiang Han¹

¹Key Lab of Materials Chemistry for Energy Conversion & Storage (HUST) of Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China.

|May 17, 2024

Summary

This summary is machine-generated.

Researchers developed dynamic nanoparticle surfactants (NPSs) for reversible control of block copolymer structures. This method avoids complex synthesis, enabling switchable smart materials.

Keywords:

block copolymers confined assembly dynamic interfacial assembly electrostatic interactions microparticles

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Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers

Synthesis of Monodisperse Cylindrical Nanoparticles via Crystallization-driven Self-assembly of Biodegradable Block Copolymers

Published on: June 20, 2019

Area of Science:

Materials Science
Polymer Chemistry
Nanotechnology

Background:

Responsive nanoparticle surfactants (NPSs) are crucial for controlling interfacial properties in catalysis, corrosion, and block copolymer (BCP) self-assembly.
Existing stimuli-responsive NPSs often require complex synthesis and surface modification procedures.

Purpose of the Study:

To develop a strategy for in situ construction of dynamic and reversible NPSs.
To demonstrate the ability to dynamically manipulate interfacial interactions and reversibly switch BCP microparticle structures.

Main Methods:

In situ construction of NPSs via electrostatic interaction between charged nanoparticles and homopolymers.
Utilizing pH changes or competitive electrostatic attractions to disassemble NPSs.
Incorporating aggregation-induced emission luminogens for fluorescence visualization of structural transformations.

Main Results:

Assembled NPSs at oil/water interfaces reduced interfacial tension and directed BCP assembly.
Dynamic NPSs allowed reversible switching of BCP microparticles between lamellar and cylindrical structures.
Fluorescence emission visualized the reversible structural transformations, dependent on BCP nanostructures.

Conclusions:

A novel concept for dynamic interfacial manipulation and reversible BCP microparticle switching was established.
The method bypasses time-consuming NPS synthesis, offering a streamlined approach.
This work presents promising applications for fabricating smart materials with tunable structures and properties.