Journal
NANO RESEARCH
Volume 2, Issue 5, Pages 386-393Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-009-9038-3
Keywords
Nanoporous; nanotube; gold; optical properties; electrochemiluminescence
Categories
Funding
- National 863 [2006AA03Z222]
- 973 Program Projects of China [2007CB936602]
- Natural Science Foundation of Shandong Province [2007ZRB01117, 2006BS04018]
- Ministry of Education of China [108078]
- SEM-NCET
- SRF-ROCS Programs
- Shandong Natural Science Fund
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Metallic nanostructures with hollow interiors or tailored porosity represent a special class of attractive materials with intriguing chemicophysical properties. This paper presents the fabrication of a new type of metallic nanoporous nanotube structure based on a facile and effective combination of nanocrystal growth and surface modification. By controlling the individual steps involved in this process, such as nanowire growth, surface modification, thermal diffusion, and dealloying, one-dimensional (1-D) metallic nanostructures can be prepared with tailored structural features and pre-designed functionalities. These tubular and porous nanostructures show distinct optical properties, such as tunable absorption in the near-infrared region, and enhanced capability for electrochemiluminescence signal amplification, which make them particularly desirable as novel 1-D nano-carriers for biomedical, drug delivery and sensing applications.
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