Krpetić, Z, Davidson, AM, Volk, M 
ORCID: 0000-0003-3555-8584, Lévy, R, Brust, M ORCID: 0000-0001-6301-7123 and Cooper, DL ORCID: 0000-0003-0639-0794
(2013)
High-resolution sizing of monolayer-protected gold clusters by differential centrifugal sedimentation
ACS Nano, 7 (10).
pp. 8881-8890.
ISSN 1936-0851, 1936-086X
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Abstract
Differential centrifugal sedimentation (DCS) has been applied to accurately size ligand-protected gold hydrosols in the 10 to 50 nm range. A simple protocol is presented to correct for particle density variations due to the presence of the ligand shell, which is formed here by either polyethylene glycol-substituted alkane thiols (PEG-alkane thiols) of different chain length or oligopeptides. The method gives reliable data for all particle sizes investigated and lends itself to rapid routine sizing of nanoparticles. Unlike TEM, DCS is highly sensitive to small changes in the thickness of the organic ligand shell and can be applied to monitor shell thickness variations of as little as 0.1 nm on particles of a given core size. © 2013 American Chemical Society.
| Item Type: | Article |
|---|---|
| Additional Information: | Times Cited: 9 |
| Uncontrolled Keywords: | gold hydrosols nanoparticles, differential centrifugal sedimentation (DCS), particle sizing, monolayer-protected clusters (MPCs), FTIR, peptide-capped nanoparticles |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 15 Dec 2016 08:53 |
| Last Modified: | 24 Jan 2026 00:18 |
| DOI: | 10.1021/nn403350v |
| Related Websites: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3004888 |
| Disclaimer: | The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate. |
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