Configuration and dynamics of a self-propelled diblock copolymer chain

Area of Science:

• Polymer Science
• Soft Matter Physics
• Active Matter

Background:

• Active polymers are self-propelled, chain-like structures.
• Synthetic colloidal chains offer pathways to engineer active polymers.
• Understanding active polymer behavior is crucial for materials science.

Purpose of the Study:

• Investigate the configuration and dynamics of active diblock copolymer chains.
• Analyze the interplay between equilibrium self-assembly and dynamic self-assembly.
• Explore how propulsion direction influences chain morphology.

Main Methods:

• Utilized computational simulations to model active diblock copolymer chains.
• Analyzed chain configurations under forward and backward propulsion.
• Examined state transitions using work and energy principles.

Main Results:

• Forward propulsion yields spiral(+) and tadpole(+) states.
• Backward propulsion results in spiral(-), tadpole(-), and bean states.
• Backward-propelled chains more readily form spirals; chirality governs forward-propelled configurations.

Conclusions:

• Active diblock copolymers display diverse self-assembled states dependent on propulsion.
• Chirality is a key factor for forward propulsion dynamics, but not backward.
• Findings provide a basis for designing multi-chain active polymeric materials.