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Updated: Jan 19, 2026

Modulating Shape of Polyester Based Polymersomes using Osmotic Pressure

Modulating Shape of Polyester Based Polymersomes using Osmotic Pressure

Published on: April 21, 2021

Tailoring Polymersome Shape Using the Hofmeister Effect.

Yongjun Men¹, Wei Li¹, Coralie Lebleu¹

¹Radboud University , Institute for Molecules and Materials , Heyendaalseweg 135 , 6525 AJ , Nijmegen , The Netherlands.

Biomacromolecules

|September 19, 2019

Summary

This summary is machine-generated.

Scientists used the Hofmeister effect to control polymersome shapes, creating diverse morphologies like tubes and discs. This method offers a new way to engineer polymersomes for nanomedicine and nanomachine applications.

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Area of Science:

Polymer science
Materials science
Nanotechnology

Background:

Polymersomes are promising nanocarriers but reshaping them for controlled size and shape remains a significant challenge.
Their rigid membrane, unlike liposomes, makes shape control difficult, hindering applications in nanomedicine and nanomachines.
Understanding the mechanisms behind shape changes is crucial for developing advanced polymersome-based technologies.

Purpose of the Study:

To develop a novel methodology for precise shape control of polymersomes.
To investigate the influence of the Hofmeister effect on polymersome morphology.
To demonstrate the versatility of this method for creating various polymersome shapes.

Main Methods:

Utilizing the Hofmeister effect by adjusting ion type and concentration to influence polymersome shape.
Systematic analysis of morphological changes induced by varying ionic conditions.
Characterization of multiple polymersome morphologies including ellipsoids, tubes, discs, stomatocytes, and large compound vesicles.

Main Results:

Demonstrated successful shape control of polymersomes using the Hofmeister effect.
Identified a range of achievable morphologies: ellipsoid, tube, disc, stomatocytes, and large compound vesicles.
Provided evidence that shape changes are driven by both osmotic pressure and direct membrane interactions.

Conclusions:

The Hofmeister effect offers a powerful and generalizable tool for tailoring polymersome shapes.
This methodology overcomes previous limitations in polymersome reshaping, enabling diverse morphologies.
The findings pave the way for advanced applications of engineered polymersomes in nanomedicine and nanomachines.