Carbon dioxide chemical sensor having amino acid-based compound and carbon dioxide detection method using the same

Patent metadata

Field	Value
Publication number	US-10422779-B2
Application number	US-201615236191-A
Country	US
Kind code	B2
Filing date	Aug 12, 2016
Priority date	Aug 12, 2015
Publication date	Sep 24, 2019
Grant date	Sep 24, 2019

Abstract

The present invention relates to an amino acid-based compound for detecting carbon dioxide, and to a carbon dioxide chemical sensor and a carbon dioxide detection method using the compound, wherein the compound having selectivity with respect to carbon dioxide exhibits a high selectivity to carbon dioxide and thus may detect carbon dioxide of a very low concentration, exhibits excellent light-absorbing or fluorescent characteristics, and, in particular, may achieve an effect of detecting carbon dioxide in real time.

First claim

What is claimed is:

1. A carbon dioxide sensor of an on/off type, the carbon dioxide sensor comprising (i) a carbon dioxide adsorbent material free of a chromophore; and (ii) a compound represented by Formula 1:

wherein, in Formula 1, FM 1 is any one selected from compounds represented by Structural Formula 1, and
n is a real number of 1 to 2:

2. The carbon dioxide sensor of claim 1 , wherein the (i) carbon dioxide adsorbent material free of a chromophore is any one selected from triethanolamine (TEA), N-methyl di ethanol amine (MDEA), dimethylethanmolamine (DMEA), diethanolamine (DEA), N-methylethanolamine (MMEA), monoethanolamine (MEA), and 2-piperidinemethanol (PM).

3. The carbon dioxide sensor of claim 1 , wherein a carbon dioxide affinity of the (i) carbon dioxide adsorbent material free of a chromophore is higher than a carbon dioxide affinity of the (ii) compound represented by Formula 1.

4. A method of detecting carbon dioxide, the method comprising:
I) exposing the carbon dioxide sensor of claim 1 to a sample comprising carbon dioxide;
II) allowing the carbon dioxide sensor and carbon dioxide in the sample to react through the exposing in step I) to form a compound represented by Formula 4; and
III) measuring light-absorptivity or fluorescence change of the compound represented by Formula 4 formed in step II),

wherein, in Formula 4,
FM 2 is any one selected from compounds represented by Structural Formula 2, and
n is a real number of 1 to 2:

5. A method of regenerating the carbon dioxide sensor of claim 1 , the method comprising:
I) detecting carbon dioxide with the carbon dioxide sensor of claim 1 by converting the compound of claim 1 represented by Formula 1 to a compound represented by Formula 4 by allowing the compound represented by Formula 1 to react with carbon dioxide;
II) converting the compound represented by Formula 4 to the compound represented by Formula 1 by separating carbon dioxide from the compound represented by Formula 4,

wherein, in Formula 4,
FM 2 is any one selected from compounds represented by Structural Formula 2, and
n is a real number of 1 to 2:

6. The method of claim 5 , wherein, in step II), nitrogen is injected to convert the compound represented by Formula 4 to the compound represented by Formula 1 by separating carbon dioxide from the compound represented by Formula 4.

7. The method of claim 6 , wherein, in step II), 100 to 200 ml of the nitrogen is injected based on 50 μM of the compound represented by Formula 4.

Assignees

• Gwangju Inst Science & Tech

Inventors

• Han Min-Su
• KANG Seung-Yoon

Classifications

• C07C309/51

  at least one of the nitrogen atoms being part of any of the groups [IMAGE cpc-sch-C07C-0976.gif], X being a hetero atom, Y being any atom · CPC title

• C07C2603/24

  Anthracenes; Hydrogenated anthracenes · CPC title

• C07C2601/16

  the ring being unsaturated · CPC title

• G01N31/223

  for investigating presence of specific gases or aerosols (G01N31/221, G01N31/222 take precedence; actuation of fire alarm by presence of smoke or gases G08B17/10) · CPC title

• G01N33/004 Primary

  CO or CO2 · CPC title