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Summary
This summary is machine-generated.

This study reveals how supramolecular fibers form, from initial monomer collapse to bundling. Understanding these self-assembly dynamics is key for designing new materials.

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Area of Science:

  • Supramolecular chemistry
  • Materials science
  • Biophysics

Background:

  • Supramolecular fibers are crucial in biological systems and advanced materials.
  • Understanding fiber formation requires detailed energy landscape insights.
  • The link between molecular building blocks and final structure is complex.

Purpose of the Study:

  • To investigate the multi-stage formation of 1,3,5-cyclohexanetricarboxamide fibers.
  • To elucidate the dynamics of nucleation, elongation, secondary nucleation, and bundling.
  • To map the energy landscape of supramolecular fiber assembly.

Main Methods:

  • Utilized Markov state modeling of molecular dynamics simulations.
  • Employed the polarizable CHARMM Drude force field for accurate modeling.
  • Simulations covered timescales up to microseconds.

Main Results:

  • Observed rapid monomer collapse during nucleation, forming disordered assemblies that mature into nuclei.
  • Identified elongation and secondary nucleation as competing processes influenced by monomer density.
  • Bundling involves initial fiber association followed by stabilization through surface reorganization.

Conclusions:

  • Provided comprehensive insights into supramolecular fiber formation stages.
  • Demonstrated the critical role of monomer density in competing growth mechanisms.
  • Revealed the mechanism of bundle stabilization via surface interactions and aromatic group interactions.