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Self-Assembled Dipeptide Aerogels with Tunable Wettability.

Xianbao Li1,2, Qi Li1,3, Jinbo Fei1

  • 1Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Lab of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.

Angewandte Chemie (International Ed. in English)
|April 22, 2020
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Summary

Researchers created tunable supramolecular materials using dipeptides. By controlling self-assembly pathways, they achieved distinct surface wettabilities for diverse applications, including medical care.

Keywords:
aerogelsdipeptideshemostasissupramolecular assemblywettability

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Area of Science:

  • Supramolecular chemistry
  • Materials science

Background:

  • Fabricating supramolecular materials with tailored properties is challenging due to competing self-assembly pathways.
  • Controlling nanoscale assembly is key to achieving desired material functions.

Purpose of the Study:

  • To demonstrate the self-assembly of dipeptides into aerogels with tunable surface wettability.
  • To explore the potential of these tunable aerogels in medical applications.

Main Methods:

  • Precisely controlling dipeptide self-assembly pathways.
  • Analyzing the surface properties (wettability) of the resulting aerogels.
  • Investigating the role of charged groups and aromatic residues in surface modification.

Main Results:

  • Dipeptides self-assembled into aerogels with significantly different surface wettabilities (superhydrophilic or highly hydrophobic).
  • Surface wettability was determined by the selective exposure of charged groups or aromatic residues on nanoscale building blocks.
  • Single-component dipeptide aerogels exhibited diverse properties suitable for various applications.

Conclusions:

  • Precise control over self-assembly pathways enables the creation of supramolecular materials with distinct functions from a single molecular unit.
  • Dipeptide-based aerogels offer a promising platform for developing advanced materials with tunable properties for applications like medical care.