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Related Experiment Video

Updated: Oct 15, 2025

A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles

A Facile and Efficient Approach for the Production of Reversible Disulfide Cross-linked Micelles

Published on: December 23, 2016

Dendrimer-Based Polyion Complex Vesicles: Loops Make Loose.

Jianan Huang¹, Chendan Li¹, Yifan Gao¹

¹Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.

Macromolecular Rapid Communications

|October 26, 2021

Summary

This summary is machine-generated.

Polymer self-assembly can be kinetically controlled, yielding distinct structures like micelles and vesicles. This kinetic control offers a pathway to create functional nanoparticles with tunable properties for specific applications.

Keywords:

PAMAMs dynamics loops polyion complex vesicles triblock copolymers

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Published on: April 8, 2020

Area of Science:

Polymer science
Supramolecular chemistry
Materials science

Background:

Amphiphile self-assembly is typically governed by thermodynamic control via the packing parameter.
The ability of polymers to relax and reach thermodynamic equilibrium is not always guaranteed.
Kinetic control offers an alternative mechanism for directing self-assembly.

Purpose of the Study:

To investigate the role of kinetic control in polyion complex (PIC) assembly.
To explore the formation of different morphologies (micelles and vesicles) from block copolymers and dendrimers.
To understand the influence of precursor complex dynamics on final structure and properties.

Main Methods:

Combining poly(ethylene oxide)-b-(styrene sulfonate) (PEO-PSS) block copolymers with cationic polyamidoamine (PAMAM) dendrimers of varying generations.
Characterizing the self-assembled structures (micelles and vesicles) using relevant techniques.
Assessing the stability and dynamics of the assemblies in response to salt concentration and time.

Main Results:

Diblocks and triblocks with similar packing parameters formed distinct structures: core-shell micelles and vesicles, respectively.
Micelles exhibited high salt stability, while vesicles were salt-sensitive and showed dynamic matter exchange.
Small, kinetically trapped precursor complexes were identified as the cause of morphological and dynamic differences.

Conclusions:

Kinetic control of PIC assembly can yield particles with well-defined and useful properties.
Triblock copolymers form more dynamic vesicles, suggesting potential for "active" nanomaterials.
This work opens new avenues for tuning PICsomes for targeted applications through kinetic pathways.