Process for attaching molecular wires and devices to carbon nanotubes and compositions thereof
The present invention is directed towards processes for covalently attaching molecular wires and molecular electronic devices to carbon nanotubes and compositions thereof. Such processes utilize diazonium chemistry to bring about this marriage of wire-like nanotubes with molecular wires and molecular electronic devices.
1. A process comprising:
(a) derivatizing a carbon nanotube with a diazonium specie; and
(b) covalently attaching a molecular wire to the derivatized carbon nanotube.
2. The process of claim 1 , wherein the carbon nanotube is a single-wall carbon nanotube.
3. The process of claim 2 further comprising connecting a molecular electronic device to the molecular wire.
4. The process of claim 2 , wherein the molecular wire comprises an oligo(phenylene ethynylene) molecular wire.
5. The process of claim 1 further comprising connecting a molecular electronic device to the molecular wire.
6. The process of claim 1 , wherein the molecular wire comprises an oligo(phenylene ethynylene) molecular wire.
7. A process comprising:
(a) derivatizing a carbon nanotube with a diazonium specie; and
(b) covalently attaching a molecular switch to the derivatized carbon nanotube.
8. The process of claims 7 , wherein the carbon nanotube is a single-wall carbon nanotube.
9. A method for derivatizing carbon nanotubes comprising:
(a) preparing an assembly, wherein
(i) the assembly comprises a first plurality of carbon nanotubes and a second plurality of carbon nanotubes; and
(ii) wherein the carbon nanotubes in the first plurality and the carbon nanotubes in the second Plurality can be individually addressed electronically;
(b) immersing the assembly in a diazonium specie; and
(c) applying a negative potential to the assembly to cause the first plurality to essentially come in contact with the second plurality; wherein
applying said negative potential facilitates an electrochemical reaction of the assembly with the diazonium specie so as to derivatize at least one of the first plurality and second plurality of nanotubes.
10. The method of claim 9 , wherein the diazonium specie comprise molecules that function in a capacity selected from the group consisting of molecular switches and molecular wires.
11. The method of claim 9 , wherein the electrochemical reaction of said diazonium specie occurs at a junction between said first plurality of nanotubes and said second plurality of nanotubes.