Rational design of ABC triblock terpolymer solution nanostructures with controlled patch morphology.

Area of Science:

• Polymer Science and Engineering
• Materials Science
• Nanotechnology

Background:

• Block copolymers self-assemble into useful nanostructures, but predicting triblock terpolymer behavior in solution is complex.
• Interactions between blocks and solvent significantly influence self-assembly outcomes.
• Existing knowledge primarily focuses on diblock copolymer systems.

Purpose of the Study:

• To provide guidelines for the self-assembly of linear ABC triblock terpolymers in solution.
• To explore the formation of multicompartment nanostructures with tunable geometries and morphologies.
• To establish a framework for designing complex self-assembled systems for nanotechnology.

Main Methods:

• Investigated the influence of block length ratios (NC/NA and NB) on nanostructure formation.
• Analyzed the transition from micelle geometry control to core-solvent and patch morphology.
• Explored the independent control over corona, core, and patch characteristics.

Main Results:

• Demonstrated control over micelle geometry (spheres, cylinders, sheets, vesicles) via NC/NA ratio.
• Showcased control over core A and patch B morphology (spherical, cylindrical, bicontinuous, lamellar) via NB.
• Generated unprecedented multicompartment nanostructures, including spheres-on-cylinders and patchy polymersomes.

Conclusions:

• Independent control over block lengths provides a versatile toolbox for designing complex polymer self-assemblies.
• The derived parameters enable the combinatorial construction of diverse nanostructures.
• This work advances the design of soft matter nanotechnologies through predictable self-assembly.