The present invention generally relates to the fabrication of molecular electronics devices from molecular wires and Single Wall Nanotubes (SWNT). In one embodiment, the cutting of a SWNT is achieved by opening a window of small width by lithography patterning of a protective layer on top of the SWNT, followed by applying an oxygen plasma to the exposed SWNT portion. In another embodiment, the gap of a cut SWNT is reconnected by one or more difunctional molecules having appropriate lengths reacting to the functional groups on the cut SWNT ends to form covalent bonds. In another embodiment, the gap of a cut SWNT gap is filled with a self-assembled monolayer from derivatives of novel contorted hexabenzocoranenes. In yet another embodiment, a device based on molecular wire reconnecting a cut SWNT is used as a sensor to detect a biological binding event.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH
 The invention described herein was funded in part by grants from the National Science Foundation, NSF Award Number CHE-0117752 and by the New York State Office of Science, Technology, and Academic Research (NYSTAR) and the Department of Energy, Nanoscience Initiative (NSET#04ER46118). Colin Nuckolls thanks US National Science Foundation CAREER award (#DMR-02-37860). The United States Government may have certain rights under the invention.