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http://pubs.acs.org/doi/abs/10.1021/jp075582m
Estimation of Surface Oxide on Surfactant-Free Gold Nanoparticles Laser-Ablated in Water
Surfactant-free gold nanoparticles were prepared by laser ablation of a gold metal plate in water. The nanoparticles were characterized by absorption spectroscopy, ¦Æ-potential measurements, and XPS spectroscopy. The nanoparticles are negatively charged because the surface atoms are partially oxidized to AuØó-, according to the literature by Sacher and co-workers (J. Phys. Chem. B, 2004, 108, 16864). We further examined electrostatic interactions between nanoparticle and cationic surfactants.
5Â¥2012-09-02 01:58:02
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Fluorescence of Colloidal Gold Nanoparticles is Controlled
by the Surface Adsorbate
Ewa M. Goldys * and Mushtaq A. Sobhan
Adv. Funct. Mater. 2012, 22, 1906¨C1913
It is reported that density and
type of surface ligands have key infl uence on the dominant UV-vis fl uorescence
band in positively and negatively charged gold nanoparticles capped
with citrate, gold oxide, and cetyltrimethyl ammonium bromide (CTAB).
6Â¥2012-09-02 02:11:55
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7Â¥: Originally posted by very2 at 2012-09-02 02:18:48
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