AVS 53rd International Symposium
    Nucleic Acids at Surfaces Topical Conference Monday Sessions
       Session DN-MoM

Paper DN-MoM1
Carbon Nanotube and Thiol Tethered ssDNA Interactions on Gold

Monday, November 13, 2006, 8:00 am, Room 2014

Session: Nucleic Acids at Surfaces I
Presenter: R.A. Zangmeister, NIST
Authors: R.A. Zangmeister, NIST
J.E. Maslar, NIST
J.G. Kushmerick, NIST
Correspondent: Click to Email
Exceptional properties of carbon nanotubes (CNTs) such as high tensile strength, high electron mobility, superior thermal properties, and nanometer dimensions have motivated intense efforts to incorporate these materials into useful electronic and sensing devices. The primary challenges of fabricating useful devices from CNTs result from their polydispersity, poor solubility, and the lack of a general method to deposit CNTs with control over position, density, and alignment. The conjugation of CNTs with biological molecules is a potentially promising route to control the deposition of CNTs on device structures. Biomolecules such as DNA, antibodies, and CNT-binding peptide sequences have been used to control the position, and in some cases alignment of modified CNTs on device structures. We are investigating the interaction of single walled CNTs (SWNTs) with gold surfaces modified with end-tethered single stranded DNA (ssDNA) monolayers. We will report preliminary results from reflection absorption FT-IR, Raman, and scanning probe microscopy characterization of this system. We hope to gain adsorption and dispersity information that will enable advancement in measurement methods based on CNT material device structures.