This project utilizes existing methods to find a new, efficient, and cleaner way to functionalize single-walled carbon nanotubes (SWCNTs) with deoxyribonucleic acid (DNA). DNA is used because it is a well-studied molecule and because of its ability to bind strongly, selectively, and reversibly to other molecules. Nanotubes are strong, lightweight, and can be used as electrical conductors. However they are not easily manipulated in their pure state and must be functionalized to become viable for electronic research. There could be important applications of this study's product in nano-computer research because a reliable method is needed to anchor SWCNTs to an electronic surface (i.e. silicon wafers that are used in microchips). In this study we plan to functionalize the SWCNTs with DNA by a four-step process. The four steps are (1) nanotube purification, (2) functionalization with 4-nitroaniline, (3) reduction of a nitro group, and (4) cross-linking to DNA. The success of steps one through three were confirmed by using both infrared spectroscopy and UV/Visible absorption spectroscopy. Currently the project is focusing on finding alternative methods of functionalizing nanotubes. For example, a functionalizing the SWCNTs with 1,4-benzenediamine would reduce the number of steps necessary to complete the synthesis.