| 論文名 |
A metal-organic framework-based material for electrochemical sensing of carbon dioxide. |
| 著者 |
Jeremiah J Gassensmith
Jeung Yoon Kim
James M Holcroft
Omar K Farha
J Fraser Stoddart
Joseph T Hupp
Nak Cheon Jeong
|
| キーワード |
|
| 出版年月 |
1970年1月 |
| 発表先 |
J Am Chem Soc. 2014 Jun 11;136(23):8277-82. doi: 10.1021/ja5006465. Epub 2014 May 29. |
| WEBサイト |
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| 論文概要（和文） |
二酸化炭素の電気化学的検知のための金属有機フレームワークベースの材料 |
| 論文概要（英文） |
The free primary hydroxyl groups in the metal-organic framework of CDMOF-2, an extended cubic structure containing units of six γ-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. |
