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Mass Spectrometric Analysis of Water-soluble Gold Nanoclusters |
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| Authors: | Maya L Chen CH Stevenson KA Kenik EA Allman SL Thundat TG |
| Institution: | (1) Chemical and Analytical Sciences Division and Center for Advanced Engineering Science Advanced Research, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6119, USA;(2) Life Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA;(3) Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA |
| Abstract: | Batches of water-soluble gold nanoclusters of nominal 2.0 or 3.5-nm diameter were prepared to evaluate particle size determinations by a number of techniques such as transmission electron microscopy or atomic force microscopy and to validate estimates derived by mass spectrometric analysis using matrix-assisted laser desorption ionization (MALDI). Good agreement was found and MALDI lends itself to analyses even in the presence of aggregates. |
| Keywords: | particle size measurements scanning electron microscopy transmission electron microscopy scanning probe microscopy aggregates |
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