Hierarchical Layer Engineering Using Supramolecular Double-Comb Diblock Copolymers.

Area of Science:

• Materials Science
• Polymer Chemistry
• Supramolecular Chemistry

Background:

• Diblock copolymers self-assemble into various nanostructures.
• Supramolecular chemistry offers routes to complex polymer architectures.

Purpose of the Study:

• To investigate the formation of unusual multilayered lamellae-in-lamellae structures.
• To explore the relationship between molecular weight and structural complexity.

Main Methods:

• Synthesis of symmetric supramolecular double-comb diblock copolymers.
• Characterization of self-assembled nanostructures using microscopy and scattering techniques.
• Systematic variation of molecular weight (M) while maintaining fixed surfactant concentration.

Main Results:

• Formation of unprecedented multilayered parallel lamellae-in-lamellae structures observed.
• The number of internal layers increased with molecular weight, reaching up to 34 layers.
• A precise scaling relationship (n ∝ M^0.67) was established between the number of internal structures (n) and molecular weight (M).

Conclusions:

• The study demonstrates precise control over the formation of complex multilayered nanostructures in block copolymers.
• The established scaling law facilitates the rational design of materials with tailored internal layer numbers.
• This work opens avenues for developing advanced functional materials based on controlled supramolecular assembly.