Diffusion and filtration properties of self-assembled gold nanocrystal membranes.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 21548617.
- Also identified by DOI 10.1021/nl200841a.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Close-packed nanoparticle monolayers have recently been shown to form mechanically robust, free-standing membranes. We report the first measurements of molecular transport through such ultrathin sheets, self-assembled from dodecanethiol-ligated gold nanocrystals. For aqueous solutions we find filtration coefficients 2 orders of magnitude larger than those observed in polymer-based filters, sieving of large solutes, and for smaller solutes a pronounced dependence of rejection on being charged. These results open up new possibilities for controlled delivery and separation of nano-objects.
Medical subject headings
- Gold
- Membranes, Artificial
- Metal Nanoparticles