Diffusion and filtration properties of self-assembled gold nanocrystal membranes.
- Center for Nanoscale Materials
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.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1018180
- Report Number(s):
- ANL/CNM/JA-69157
- Journal Information:
- Nat. Nanotechnol., Journal Name: Nat. Nanotechnol. Journal Issue: 6 ; Jun. 2011 Vol. 11; ISSN 1530-6984
- Country of Publication:
- United States
- Language:
- ENGLISH
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