Noncovalent Postmodification Guided Reversible Compartmentalization of Polymeric Micelles

Area of Science:

• Soft matter physics
• Polymer chemistry
• Supramolecular chemistry

Background:

• Compartmentalized micelles (CMs) are advanced soft materials with potential applications mirroring natural structures.
• Achieving accessible and reversible control over CM structure has been a significant challenge in materials science.

Purpose of the Study:

• To develop a general, noncovalent postmodification strategy for fabricating well-defined compartmentalized micelles (CMs).
• To demonstrate tunable control over CM architecture and reversible transformations.

Main Methods:

• Fabrication of precursor micelles (PMs) from a diblock copolymer.
• Aromatic postmodification of PMs to induce compartmentalization.
• Tuning postmodification degree and solvent composition to control CM structure.
• Investigating reversible transformations using heating-cooling cycles.

Main Results:

• Successfully fabricated spherical CMs with controlled compartment number, size, and distribution.
• Demonstrated reversible transitions between PMs and CMs through thermal cycling.
• Showcased the ability of the method to correct ill-structured micelles into homogeneous CMs.
• Achieved unprecedented micelle reproducibility through postmodification-guided compartmentalization.

Conclusions:

• The noncovalent postmodification approach offers a versatile and reproducible method for CM fabrication.
• The reversible nature of the transformation enables potential in situ functional applications.
• This strategy significantly advances the control and reproducibility of complex micellar structures.