Leveraging Molecular Weight Dispersity for Scalable, Precise Synthesis of Nanocylinders Via...

Area of Science:

• Polymer Chemistry
• Materials Science
• Nanotechnology

Background:

• Scalable synthesis of polymeric nanostructures faces challenges in balancing efficiency and control.
• Existing methods often struggle with precise morphological control at high concentrations.

Purpose of the Study:

• To introduce a quasi-polymerization-induced self-assembly (quasi-PISA) strategy for fabricating uniform cylindrical micelles.
• To demonstrate precise control over nanostructure length using polymerization conditions.

Main Methods:

• Utilized a quasi-PISA strategy integrating in situ nucleation-growth kinetics.
• Fabricated cylindrical micelles from liquid crystalline block copolymers at high concentrations (up to 10 wt.%).
• Modulated polymerization conditions to control fibril lengths.

Main Results:

• Achieved uniform cylindrical micelles with controlled lengths from 100 nm to over 3 µm (dispersity < 1.10).
• Demonstrated the utility of broad molecular weight distribution in PISA for precise assembly.
• Enabled one-pot synthesis of triblock comicelles and gram-scale production.

Conclusions:

• The quasi-PISA strategy offers a scalable method for length-controlled cylindrical nanostructures.
• Harnessing PISA's molecular weight distribution provides precise assembly control.
• This work lays groundwork for practical applications of tailored polymeric nanostructures.