Electrochemical Charging of Single Gold Nanorods

Metal nanocrystals are commonly used to mediate important chemical reactions such as water splitting and CO oxidation. To investigate such redox reactions in detail, it would be useful to be able to carry out electrochemistry on single metal nanocrystals. We report here that the surface plasmon reso...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2009-10, Vol.131 (41), p.14664-14666
Main Authors: Novo, Carolina, Funston, Alison M, Gooding, Ann K, Mulvaney, Paul
Format: Article
Language:English
Subjects:
Color
Electrochemistry
Gold - chemistry
Metal Nanoparticles - chemistry
Nanotubes - chemistry
Scattering, Radiation
Surface Plasmon Resonance
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Summary:Metal nanocrystals are commonly used to mediate important chemical reactions such as water splitting and CO oxidation. To investigate such redox reactions in detail, it would be useful to be able to carry out electrochemistry on single metal nanocrystals. We report here that the surface plasmon resonance of a single gold nanocrystal can be reversibly and rapidly tuned by tens of nanometers electrochemically. The spectral shifts are more sensitive for elongated morphologies such as rods and lead to color changes perceptible by eye.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja905216h