Synthesis of Polymer Single-Chain Nanoparticle with High Compactness in Cosolvent Condition: A Computer Simulation...

Area of Science:

• Polymer Chemistry
• Materials Science
• Computational Chemistry

Background:

• Polymeric single-chain nanoparticles (SCNPs) are synthesized via intramolecular crosslinking of individual polymer chains.
• Conventional SCNP synthesis in dilute solutions leads to loosely packed structures due to local crosslinking.
• Achieving compact and spherical SCNPs remains a significant synthetic challenge.

Purpose of the Study:

• To investigate methods for inhibiting local spheroidization during SCNP synthesis.
• To enhance the compactness and sphericity of SCNPs.
• To provide insights into effective SCNP fabrication strategies.

Main Methods:

• Utilized computer simulations to model polymer chain behavior during crosslinking.
• Investigated the effect of polymer chain pre-collapse in a cosolvent environment.
• Analyzed the probability of crosslinking reactions at varying contour distances.

Main Results:

• Demonstrated that pre-collapsing polymer chains in a cosolvent significantly increases crosslinking probability at large contour distances.
• Showed that this approach favors the formation of closely packed globular structures.
• Simulated SCNPs exhibited improved sphericity and higher compactness compared to conventional methods.

Conclusions:

• Pre-collapse of polymer chains in a cosolvent is an effective strategy for synthesizing compact and spherical SCNPs.
• This simulation work offers valuable insights for designing advanced SCNP fabrication techniques.
• The findings pave the way for improved control over SCNP morphology and properties.