Agrawal, Ved Varun and Kulkarni, G. U. and Rao, C. N. R. (2005) Nature and Properties of Ultrathin Nanocrystalline Gold Films Formed at the Organic−Aqueous Interface. THE JOURNAL OF PHYSICAL CHEMISTRY B, 109 (15). pp. 7300-7305.
Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.
Ultrathin nanocrystalline films of gold formed at different temperatures at the organic−aqueous interface have been investigated by X-ray diffraction, electron microscopy, atomic force microscopy, and electronic spectroscopy. The films are smooth and continuous over relatively large length scales and are generally 100 nm thick. The size of the nanocrystals is sensitive to the reaction temperature, which also determines whether the film is metallic or an activated conductor. The surface plasmon band of gold is highly red-shifted in the films. Alkanethiols perturb the structure of the films, with the magnitude of the effect depending on the chain length. Accordingly, the position of the plasmon band and the electrical resistance of the films are affected by interaction with alkanethiols; the plasmon band approaches that of isolated nanocrystals in the presence of long-chain thiols.
|Subjects:||Material Science > Nanochemistry|
|Divisions:||Faculty of Engineering, Science and Mathematics > School of Physics|
Faculty of Engineering, Science and Mathematics > School of Chemistry
|Deposited On:||19 Jan 2009 09:56|
|Last Modified:||19 Jan 2009 09:56|
Repository Staff Only: item control page