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Updated: Mar 31, 2026

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Polymorphism in Self-Assembly of Short Peptoid Sequences.

Renyu Zheng1,2, Mingfei Zhao3, Wenhao Zhou2,4

  • 1Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States.

Polymer Science & Technology (Washington, D.C.)
|March 30, 2026
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Summary

Researchers precisely controlled the self-assembly of synthetic peptoids (poly-N-substituted glycines) into various structures like nanosheets and nanohelices. This breakthrough enables the development of advanced bioinspired functional materials with tailored properties.

Keywords:
assembly polymorphismbiomimetic materialsmorphological controlpeptoidssequence-defined polymers

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Biomaterials Engineering

Background:

  • Controlling polymer self-assembly into specific morphologies is key for developing advanced functional materials.
  • Peptoids (poly-N-substituted glycines) offer a versatile platform for creating sequence-defined polymers with tunable properties.
  • Understanding the relationship between molecular structure and self-assembled morphology is crucial for material design.

Purpose of the Study:

  • To achieve morphological control over the self-assembly of short peptoids with asymmetric hydrophobic domains.
  • To investigate the mechanisms driving peptoid assembly polymorphism and identify methods for precise control.
  • To explore the potential of peptoids in creating bioinspired functional materials with designed morphologies.

Main Methods:

  • Synthesized a series of short peptoids with asymmetric hydrophobic domains.
  • Investigated self-assembly using techniques to control sequence design, solution pH, and temperature.
  • Employed molecular dynamics simulations to understand the role of hydrophobic domains in assembly.
  • Utilized heating to induce morphological transformations.

Main Results:

  • Demonstrated assembly polymorphism in peptoids, yielding nanosheets, twisted ribbons, and nanofibers.
  • Achieved precise control over peptoid bilayer twisting and folding through sequence design, pH, and temperature.
  • Showcased the transformation of nanosheets into nanohelices via controlled heating.
  • Identified asymmetric hydrophobic domains as key to peptoid bilayer flexibility and assembly polymorphism.

Conclusions:

  • The study provides a mechanistic understanding of peptoid assembly polymorphism.
  • Precise control over peptoid self-assembly can be achieved by tuning molecular interactions.
  • This work lays the foundation for designing biomimetic materials with tailored morphologies and functionalities using peptoids.