title: Directing and sensing changes in molecular conformation on individual carbon nanotube field effect transistors.
abstract: This study explores how to populate the surface of the carbon nanotubes with functional molecules that can be toggled back-and-forth between different molecular conformations. The molecules synthesized for this study are tagged with a photoswitchable headgroup and a functional group which directs the assembly on the surface of the carbon nanotubes. Single-walled carbon nanotube field effect transistors switch between high and low conductance as the molecules are switched with light between open and closed conformations. These devices detect the photoswitching of approximately 104 molecules.
authors.affiliation: The Nanoscience Cente, Columbia University, New York, New York 10027, USA.
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Guo
authors.forename: Limin
authors.initials: L
authors.lastname: Huang
authors.forename: Stephen
authors.initials: S
authors.lastname: O'Brien
authors.forename: Philip
authors.initials: P
authors.lastname: Kim
authors.forename: Colin
authors.initials: C
authors.lastname: Nuckolls