Gold Raspberry-Like Colloidosomes Prepared at the Water-Nitromethane Interface

Research output: Contribution to journalArticleScientificpeer-review

Researchers

Research units

  • EPFL Valais Wallis

Abstract

In this study, we propose a simple shake-flask method to produce micron-size colloidosomes from a liquid-liquid interface functionalized with a gold nanoparticle (AuNP) film. A step-by-step extraction process of an organic phase partially miscible with water led to the formation of raspberry-like structures covered and protected by a gold nanofilm. The distinctive feature of the prepared colloidosomes is a very thin shell consisting of small AuNPs of 12 or 38 nm in diameter instead of several hundred nanometers reported previously. The interesting and remarkable property of the proposed approach is their reversibility: the colloidosomes may be easily transformed back to a nanofilm state simply by adding pure organic solvent. The obtained colloidosomes have a broadband absorbance spectrum, which makes them of great interest in applications such as photothermal therapy, surface-enhanced Raman spectroscopy studies, and microreactor vesicles for interfacial electrocatalysis.

Details

Original languageEnglish
Pages (from-to)2758-2763
Number of pages6
JournalLangmuir
Volume34
Issue number8
Publication statusPublished - 27 Feb 2018
MoE publication typeA1 Journal article-refereed

ID: 31511522