SUNFEST REU Program CARBON NANOTUBE-BASED BIODETECTION OF TRIIODOTHYRANINE
نویسنده
چکیده
We report biodetection of the thyroid hormone triiodothyranine (T3) using carbon nanotube field-effect transistors. T3 molecules bind non-covalently the semiconducting nanotube and donate electrons to the nanotube lattice, thereby altering its electronic characteristics via chemical doping. The effect is semi-reversible by rinsing the transistors with the T3 solvent without the biomolecule. The nanotube transistors are found to have no electrical response to the solvent itself. The results demonstrate that T3 can have an electrostatic effect on a one-dimensional system and may suggest an electrical interaction between T3 and DNA.
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