Tube-in-a-tube electronic sensors

Patent metadata

Field	Value
Publication number	US-9739741-B2
Application number	US-201414213015-A
Country	US
Kind code	B2
Filing date	Mar 14, 2014
Priority date	Mar 14, 2013
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

The present invention is directed to tube-in-a-tube electronic materials and electronic chemical sensors comprising tube-in-a-tube configurations such as covalently functionalized double-walled carbon nanotubes.

First claim

What is claimed is:

1. An electronic chemical sensor comprising:
a) an atom-thick semiconductor inner tube transducer; and
b) a functional shell having an atom-thick backbone with a covalently attached functional group selected from the group consisting of —C 6 H 4 CH 3 , —C 6 F 4 CO 2 H, and —C 6 H 2 F 3 , in a tube-in-a-tube configuration.

2. The electronic chemical sensor of claim 1 , further comprising an analyte.

3. The electronic chemical sensor of claim 1 , wherein the analyte is selected from the group consisting of NH 3 , NH 2 PhNH 2 , CH 3 COOH, 2,4-dinitrotoluene, and dimethyl methylphosphonate.

4. The electronic chemical sensor of claim 1 , wherein the covalently attached functional groups prevent non-specific binding of interfering chemicals.

5. The electronic chemical sensor of claim 1 , wherein the tube-in-a-tube configuration is fabricated from double-walled carbon nanotubes by selective covalent functionalization of the outer wall.

6. The electronic chemical sensor of claim 1 , wherein the sensor is fabricated from one individual tube-in-a-tube.

7. The electronic chemical sensor of claim 1 , wherein the sensor is fabricated from networked tube-in-a-tubes.

8. The electronic chemical sensor of claim 1 that is modulated by a gate electrode.

9. The electronic chemical sensor of claim 1 that is directly gated by the surface functional groups or chemical changes due to surface binding events.

10. The electronic chemical sensor of claim 1 , wherein the covalently attached functional groups are chemically converted to attach polynucleotides, antibodies, or other functional groups that specifically recognize a DNA, RNA, protein, or chemical.

11. The electronic chemical sensor of claim 10 , further comprising a chemical, wherein the chemical comprises amine- and nitro-containing explosives.

12. The electronic chemical sensor of claim 11 , wherein the amine- and nitro-containing explosives are selected from the group consisting of 2-methyl-1,3,5-trinitrobenzene, nitroglycerin, cyclotetramethylene-tetranitramine, hexamethlene triperoxide diamine, urea nitrate, cyclonite, hexahydro-1,3,5-trinitro-1,3,5-triazine, and 4-dimethylaminophenylpentazole.

Assignees

• Wang Yuhuang
• Huang Jia
• Ng Allen
• Piao Yanmei
• Lee Cheng S
• Univ Maryland

Inventors

• Wang Yuhuang
• Huang Jia
• Ng Allen
• Piao Yanmei
• Lee Cheng S

Classifications

• G01N33/0057

  Warfare agents or explosives · CPC title

• B01J19/121

  Coherent waves, e.g. laser beams (lasers per se H01S3/00) · CPC title

• G01N27/227 Primary

  Sensors changing capacitance upon adsorption or absorption of fluid components, e.g. electrolyte-insulator-semiconductor sensors, MOS capacitors (G01N27/225 takes precedence) · CPC title

• G01N33/54373

  involving physiochemical end-point determination, e.g. wave-guides, FETS, gratings · CPC title