Abstract
The free primary hydroxyl groups in the metal-organic framework of CDMOF-2, an extended cubic structure containing units of six Î-cyclodextrin tori linked together in cube-like fashion by rubidium ions, has been shown to react with gaseous CO2 to form alkyl carbonate functions. The dynamic covalent carbon-oxygen bond, associated with this chemisorption process, releases CO2 at low activation energies. As a result of this dynamic covalent chemistry going on inside a metal-organic framework, CO2 can be detected selectively in the atmosphere by electrochemical impedance spectroscopy. The as-synthesized CDMOF-2 which exhibits high proton conductivity in pore-filling methanolic media, displays a ∼550-fold decrease in its ionic conductivity on binding CO2. This fundamental property has been exploited to create a sensor capable of measuring CO2 concentrations quantitatively even in the presence of ambient oxygen.
| Original language | English |
|---|---|
| Pages (from-to) | 8277-8282 |
| Number of pages | 6 |
| Journal | Journal of the American Chemical Society |
| Volume | 136 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - Jun 11 2014 |
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ASJC Scopus subject areas
- Chemistry(all)
- Catalysis
- Biochemistry
- Colloid and Surface Chemistry
Cite this
A metal-organic framework-based material for electrochemical sensing of carbon dioxide. / Gassensmith, Jeremiah J.; Kim, Jeung Yoon; Holcroft, James M.; Farha, Omar K.; Fraser Stoddart, J.; Hupp, Joseph T; Jeong, Nak Cheon.
In: Journal of the American Chemical Society, Vol. 136, No. 23, 11.06.2014, p. 8277-8282.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A metal-organic framework-based material for electrochemical sensing of carbon dioxide
AU - Gassensmith, Jeremiah J.
AU - Kim, Jeung Yoon
AU - Holcroft, James M.
AU - Farha, Omar K.
AU - Fraser Stoddart, J.
AU - Hupp, Joseph T
AU - Jeong, Nak Cheon
PY - 2014/6/11
Y1 - 2014/6/11
N2 - The free primary hydroxyl groups in the metal-organic framework of CDMOF-2, an extended cubic structure containing units of six Î-cyclodextrin tori linked together in cube-like fashion by rubidium ions, has been shown to react with gaseous CO2 to form alkyl carbonate functions. The dynamic covalent carbon-oxygen bond, associated with this chemisorption process, releases CO2 at low activation energies. As a result of this dynamic covalent chemistry going on inside a metal-organic framework, CO2 can be detected selectively in the atmosphere by electrochemical impedance spectroscopy. The as-synthesized CDMOF-2 which exhibits high proton conductivity in pore-filling methanolic media, displays a ∼550-fold decrease in its ionic conductivity on binding CO2. This fundamental property has been exploited to create a sensor capable of measuring CO2 concentrations quantitatively even in the presence of ambient oxygen.
AB - The free primary hydroxyl groups in the metal-organic framework of CDMOF-2, an extended cubic structure containing units of six Î-cyclodextrin tori linked together in cube-like fashion by rubidium ions, has been shown to react with gaseous CO2 to form alkyl carbonate functions. The dynamic covalent carbon-oxygen bond, associated with this chemisorption process, releases CO2 at low activation energies. As a result of this dynamic covalent chemistry going on inside a metal-organic framework, CO2 can be detected selectively in the atmosphere by electrochemical impedance spectroscopy. The as-synthesized CDMOF-2 which exhibits high proton conductivity in pore-filling methanolic media, displays a ∼550-fold decrease in its ionic conductivity on binding CO2. This fundamental property has been exploited to create a sensor capable of measuring CO2 concentrations quantitatively even in the presence of ambient oxygen.
UR - http://www.scopus.com/inward/record.url?scp=84902266469&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84902266469&partnerID=8YFLogxK
U2 - 10.1021/ja5006465
DO - 10.1021/ja5006465
M3 - Article
VL - 136
SP - 8277
EP - 8282
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 23
ER -