Directing and sensing changes in molecular conformation on individual carbon nanotube field effect transistors

Xuefeng Guo; Limin Huang; Stephen O'Brien; Philip Kim; Colin Nuckolls

doi:10.1021/ja054335y

Directing and sensing changes in molecular conformation on individual carbon nanotube field effect transistors

J Am Chem Soc. 2005 Nov 2;127(43):15045-7. doi: 10.1021/ja054335y.

Authors

Xuefeng Guo¹, Limin Huang, Stephen O'Brien, Philip Kim, Colin Nuckolls

Affiliation

¹ The Nanoscience Cente, Columbia University, New York, New York 10027, USA.

PMID: 16248641
DOI: 10.1021/ja054335y

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.