By the same authors

From the same journal

Hierarchical assembly-dynamic gel-nanoparticle hybrid soft materials based on biologically derived building blocks

Research output: Contribution to journalArticlepeer-review

Published copy (DOI)

Author(s)

Department/unit(s)

Publication details

JournalJournal of Materials Chemistry
DatePublished - 28 Aug 2010
Issue number32
Volume20
Number of pages7
Pages (from-to)6696-6702
Original languageEnglish

Abstract

This article reports the interaction between cysteine-functionalised organogelators and gold nanoparticles. It is clearly demonstrated by transmission electron microscopy that for these gelators, where S-Au interactions can form, the nanoparticles align directly on top of, inside, and along the gel fibres. On the other hand, for a tryptophan functionalised gelator, which cannot form direct interactions with gold nanoparticles, the nanoparticles tend instead to simply cluster loosely around the fibrillar objects as a consequence of sample drying effects. Dependent on the ligand initially present as a stabiliser on the nanoparticle surface, some rearrangement of the nanoparticles on exposure to the gelator and sonication conditions can be observed. On thermal treatment, the nanoparticle-doped xerogel undergoes significant rearrangement: the gel fibres become smaller in diameter and the gold nanoparticles undergo enlargement by Ostwald ripening. This demonstrates how supramolecular nanohybrid assembled materials can evolve in response to stimulus as a consequence of the non-covalent interactions which underpin them, and their resulting dynamic nature.

    Research areas

  • FUNCTIONALIZED GOLD NANOPARTICLES, METAL NANOPARTICLES, SILVER NANOPARTICLES, SUPRAMOLECULAR GELS, INORGANIC MATERIALS, PHYSICAL GELS, CAPPING AGENT, SHORT-PEPTIDE, QUANTUM DOTS, GELATORS

Discover related content

Find related publications, people, projects, datasets and more using interactive charts.

View graph of relations