Beilstein J. Nanotechnol.2012,3, 388–396, doi:10.3762/bjnano.3.45
) analysed by HPLC were excellent (95–101%). Fresh fruit juices may contain a number of organic acids (e.g., citricacid) and sugars (e.g., glucose, fructose and sucrose), which could cause potential interferences. However no such interferences were evident in the analyses.
Comparison of the SWV method with
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Figure 1:
Typical CV and SWV voltammograms (left) at a bare GCE, 2 mmol/L AA in 0.1 M acetate buffer (pH 3.7)...
Beilstein J. Nanotechnol.2011,2, 85–98, doi:10.3762/bjnano.2.10
is essentially affected by electrostatic interactions arising from residues from the synthesis (citricacid) that may be adsorbed on the particles. It is thus normal, in the absence of both physical contact and notable intermolecular forces between the particles, that their mobility is independent of
nanogold particles, HAuCl4·3H2O supplied by ABCR, Karlsruhe, Germany. The suspension was stabilized with citricacid trisodium salt (Aldrich), which, by reducing HAuCl4, imparts the negative charge of the citrate ions to the gold nano-particle surface [27][28]. The average size of these nanogold particles
reduce the citricacid concentration. The nanoparticles were then purified from excess surfactant and other reactants by dialysis for one week. Finally, the dialyzed solution was centrifuged and particles were re-dispersed in tetrahydrofuran. 300 µL of the appropriate thiol (methyl- or hydroxyl
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Figure 1:
Evolution of the logarithm of the dissipated power normalized by the radius (R) as a function of (a...