Au-Ag alloy nanoporous nanotubes
Nanoporous, nanotube, gold, optical properties, electrochemiluminescence
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 modiﬁ cation. By controlling the individual steps involved in this process, such as nanowire growth, surface modiﬁ cation, 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.
Tsinghua University Press
Xiaohu Gu,Liqiang Xu,Fang Tian,Yi Ding, Au-Ag alloy nanoporous nanotubes. NanoRes.2009, 2: 386-393