Supramolecular Hydrogels with Carbon Nanomaterials

  • Author: Liam Critchley
  • Published: 22 June 2018
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
  • Source / Publisher: ACS Nano/ACS Publications
  • Associated Societies: American Chemical Society (ACS), USA
thumbnail image: Supramolecular Hydrogels with Carbon Nanomaterials

Hydrogels formed from short peptides are potentially useful biomaterials. However, their mechanical stability is often insufficient for practical applications. Silvia Marchesan, University of Trieste, Italy, and colleagues have developed an approach that can overcome these problems and introduce beneficial properties such as self-healing and enhanced robustness in the hydrogels.


The team combined self-assembling tripeptide molecules (LLeu-DPhe-DPhe, pictured) with various nanocarbon molecules to create a series of supramolecular hydrogels. They used either 1D, 2D, or 3D oxidized carbon nanostructures (i.e., carbon nanotubes, graphene oxide, or 3D "carbon nanohorns") to create the different gels. They mixed the peptide and the nanomaterials in an alkaline sodium phosphate buffer and induced gelation by lowering the pH with a mildly acidic buffer solution.


The researchers found that the viscoelastic properties of the hydrogels formed in all cases are strongly affected by the presence of the carbon nanostructures. The nanocarbons cause an increased stiffness and a higher resistance to applied stress. The hydrogel containing 1D nanotubes in addition has self-healing properties. According to the team, this effect could be caused by the nanotubes acting as nucleation templates for reassembly of the structure.


 

Article Views: 827

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH