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Chirality is the most intriguing yet essential facet of nature, governing life’s biochemical processes and precision. It can be observed from a snail shell pattern in a macroscopic world to an amino acid, the minutest building block of life. Most of the snails around the world have right-coiled shells because of the intrinsic chirality in their genes. All the amino acids present in the human body exist in an enantiomerically pure state, except for glycine - the sole achiral amino acid. The...
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Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides
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Structural Complexity, Network Formation and Spontaneous Chirality in Soft-Matter Self-Assembly.

Yu Cao1,2, Carsten Tschierske3, Feng Liu1,2

  • 1Shaanxi International Research Center for Soft Matter, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, P. R. China.

Accounts of Chemical Research
|May 11, 2026
PubMed
Summary
This summary is machine-generated.

Chemists designed rod-like molecules that self-assemble into complex 3D networks, creating chiral structures in soft matter and advancing materials science.

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Area of Science:

  • Soft matter physics and chemistry
  • Supramolecular chemistry
  • Materials science

Background:

  • Self-assembly is key to creating tailored materials from molecular interactions.
  • Understanding complex soft self-assembly in fluids is challenging due to entropic and enthalpic factors.
  • This work focuses on 3D network formation in dynamic fluids using π-conjugated rod-like molecules.

Purpose of the Study:

  • To elucidate complex soft self-assembly in 3D networks formed by organic molecules.
  • To investigate the self-assembly behavior of polycatenars and bolapolyphiles.
  • To explore the emergence of chirality and structural complexity in soft materials.

Main Methods:

  • Design and synthesis of polycatenars and bolapolyphiles.
  • Synchrotron X-ray scattering and resonant soft X-ray scattering.
  • Analysis of network structures, rod orientation, and symmetry breaking.

Main Results:

  • Two types of compounds formed distinct 3D network phases.
  • Polycatenars formed helical structures, propagating chirality and inducing mirror-symmetry breaking.
  • Bolapolyphiles formed networks of spheres linked by parallel rod bundles, exhibiting complex frame structures.

Conclusions:

  • Programmable self-assembly of rod-like molecules extends to soft matter, liquid crystals, and isotropic liquids.
  • Insights into structural complexity and symmetry breaking are crucial for understanding chirality emergence.
  • Potential applications include advanced soft materials with tunable optical and electronic properties.