Detection of amines

Patent metadata

Field	Value
Publication number	US-2016290980-A1
Application number	US-201615089526-A
Country	US
Kind code	A1
Filing date	Apr 2, 2016
Priority date	Apr 2, 2015
Publication date	Oct 6, 2016
Grant date	—

Abstract

A sensor can include a conductive region in electrical communication with at least two electrodes, the conductive region can include a complex, and the complex can include a carbon nanotube that is functionalized by a porphyrin.

First claim

What is claimed is:

1 . A sensor comprising:
a conductive region in electrical communication with at least two electrodes, the conductive region including a complex, wherein the complex includes a carbon nanotube that is functionalized by a porphyrin.

2 . The sensor of claim 1 , wherein the porphyrin includes a cobalt porphyrin.

3 . The sensor of claim 2 , wherein the cobalt porphyrin includes a Co 3+ .

4 . The sensor of claim 2 , wherein the cobalt porphyrin includes a Co 2+ .

5 . The sensor of claim 1 , wherein the carbon nanotube is non-covalently functionalized by the porphyrin.

6 . The sensor of claim 1 , wherein the carbon nanotube is covalently functionalized.

7 . The sensor of claim 1 , wherein the complex includes a cobalt meso-arylporphyrin complex.

8 . The sensor of claim 1 , wherein the complex includes a meso-tetrakis(pentafluorophenyl)porphyrinato.

9 . The sensor of claim 1 , wherein the complex includes a meso-tetraphenylporphyrinato.

10 . The sensor of claim 1 , wherein the complex includes a meso-arylporphyrin.

11 . The sensor of claim 1 , wherein the porphyrin includes a C10 4 − .

12 . The sensor of claim 1 , wherein the porphyrin includes a BF 4 − .

13 . The sensor of claim 1 , wherein the porphyrin includes a Cl − .

14 . The sensor of claim 1 , wherein the carbon nanotube is a single-walled carbon nanotube.

15 . A method of sensing an analyte comprising:
exposing a sensor to a sample, the sensor including:
a conductive region in electrical communication with at least two electrodes, the conductive region including a complex, wherein the complex includes a carbon nanotube that is functionalized by a porphyrin; and
measuring an electrical property at the electrodes.

16 . The method of claim 15 , further comprising detecting an amine.

17 . The method of claim 15 , further comprising detecting a putrescine.

18 . The method of claim 15 , further comprising detecting a cadaverine.

19 . The method of claim 15 , wherein the detection is semi-reversible.

20 . The method of claim 15 , further comprising detecting the analyte below 0.5 ppm.

21 . The method of claim 15 , further comprising detecting the analyte below 1 ppm.

22 . The method of claim 15 , further comprising detecting the analyte wirelessly.

23 . The method of claim 15 , further comprising detecting the analyte through a wireless radio frequency communication.

24 . The method of claim 15 , further comprising detecting an output from a radio frequency identification tag including the sensor.

25 . The method of claim 15 , further comprising detecting nitrogen content.

26 . The method of claim 15 , further comprising non-covalently functionalizing the carbon nanotube.

27 . The method of claim 15 , further comprising covalently functionalizing the carbon nanotube.

28 . The method of claim 15 , further comprising providing an irreversible response to one or more nitrogen bases.

29 . A method of preparing a sensor comprising:
forming a complex including a conductive region in electrical communication with at least two electrodes, the conductive region including a complex, wherein the complex includes a carbon nanotube that is functionalized by a porphyrin; and placing the conductive material in electrical communication with at least two electrodes.

30 . A food packaging comprising a sensor, wherein the sensor includes a conductive region in electrical communication with at least two electrodes, the conductive region including a complex, wherein the complex includes a carbon nanotube that is functionalized by a porphyrin.

Assignees

• Massachusetts Inst Technology

Inventors

• Swager Timothy M
• Liu Sophie
• Sazama Graham Thomas

Classifications

• G01N33/12 Primary

  Meat; Fish · CPC title

• G01N33/0054

  Ammonia · CPC title

• Y02A50/20

  Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters · CPC title

• G01N27/127

  comprising nanoparticles · CPC title