AVS 51st International Symposium
    Nanometer-scale Science and Technology Tuesday Sessions
       Session NS-TuP

Paper NS-TuP31
The Formation of Au-nanowires Using DNA Molecule as a Template

Tuesday, November 16, 2004, 4:00 pm, Room Exhibit Hall B

Session: Poster Session
Presenter: H.-J. Kim, Sungkyunkwan University, Korea
Authors: H.-J. Kim, Sungkyunkwan University, Korea
Y. Lee, Sungkyunkwan University, Korea
I.-S. Yi, Sungkyunkwan University, Korea
Y. Roh, Sungkyunkwan University, Korea
B. Hong, Sungkyunkwan University, Korea
H.-G. Jee, Sungkyunkwan University, Korea
S.-B. Lee, Sungkyunkwan University, Korea
M.-J. Shin, Sungkyunkwan University, Korea
S.-G. Kim, Sungkyunkwan University, Korea
Correspondent: Click to Email
The formation of metal nanowires via the conjugation of biomaterials (e.g., DNA molecules) and metal nanoparticles has been extensively investigated to obtain highly ordered electronic components for nanocircuitry and/or nanodevices. Metal nanowires were organized by the hybridization of nucleic-acid-functionalized metal or metallic nanoparticles with DNA molecule as a template. For example, Au-nanowires (AuNWs) were formed using the DNA molecules conjugated by aniline- and lysine-capped Au nanoparticles (AuNPs). In this work, we developed a simple technique to form Au-nanowires by the conjugation of 4-aminothiolphenol-capped gold nanoparticles (ATP-AuNPs) and the immobilized DNA molecules on 3-Aminopropyltriethoxysilane (APS) coated Si wafers. In this technique, a metallization process involves three steps: (1) DNA molecules were immobilized on the Si/APS substrate, (2) ATP-capped AuNPs were formed via strong chemical reaction between thiol (-SH) group of ATP and AuNPs, and (3) AuNWs were then formed by the interaction between DNA and ATP-AuNPs. In addition, we investigated the effects of the relative molar quantity (i.e., AuNPs/ATP) on the network formation of Au-nanowires. Our preliminary works indicate that the relative molar quantity may decide the structure of Au-nanowires. These results, as well as further interpretation of the data, will be presented at the conference.