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Ion Exchange

Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...

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Updated: Oct 5, 2025

Assembly and Characterization of Polyelectrolyte Complex Micelles

Assembly and Characterization of Polyelectrolyte Complex Micelles

Published on: March 2, 2020

Rational Polyelectrolyte Design Enables Multifunctional Polyion Complex Vesicles.

Jianan Huang¹, Yifan Gao¹, Peng Ding¹

¹Shanghai Key Laboratory of Multiphase Materials Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China.

ACS Applied Materials & Interfaces

|January 25, 2022

Summary

This summary is machine-generated.

Researchers developed novel polyion complex (PIC) vesicles using a unique assembly system. This breakthrough allows for controlled structure and functionality, enhancing their use as carriers for biological cargoes.

Keywords:

coordination polyelectrolyte polyelectrolyte co-assembly polyion complex vesicles regulated functionalities triblock copolymer

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Last Updated: Oct 5, 2025

Assembly and Characterization of Polyelectrolyte Complex Micelles

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Published on: May 26, 2016

Area of Science:

Supramolecular Chemistry
Materials Science
Nanotechnology

Background:

Polyion complex (PIC) vesicles are promising carriers and nanoreactors, especially for biological applications.
Current limitations in regulating PIC vesicle structure and functionality hinder their widespread application.

Purpose of the Study:

To design a novel asymmetric assembly system for controlled fabrication of PIC vesicles.
To achieve harmonious regulation of PIC vesicle structure and functionality for enhanced applications.

Main Methods:

Co-assembly of a cationic-neutral-cationic triblock copolymer with a supramolecular ionic coordination polymer.
Utilizing poly(ethylene oxide) (PEO) loops for vesicle formation.
Incorporating metal ions and a dipicolinic acid (DPA)-based bis-ligand for tunable functionalities.

Main Results:

Successfully fabricated PIC vesicles with modulated structure and functionalities.
Demonstrated controlled encapsulation and release of hydrophilic dextran using different PIC vesicles.
Integrated advantages of triblock and coordination polymers for synergistic effects.

Conclusions:

A novel strategy for harmoniously regulating PIC vesicle structure and functionality has been established.
The developed PIC vesicles offer a promising platform for demand-driven encapsulation and delivery.
Findings inspire the development of advanced functional PIC vesicles for diverse applications.