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A Metal-Organic Framework-Based Material for Electrochemical Sensing of Carbon Dioxide

Title
A Metal-Organic Framework-Based Material for Electrochemical Sensing of Carbon Dioxide
Authors
Gassensmith, JJ[Gassensmith, Jeremiah J.]Kim, JY[Kim, Jeung Yoon]Holcroft, JM[Holcroft, James M.]Farha, OK[Farha, Omar K.]Stoddart, JF[Stoddart, J. Fraser]Hupp, JT[Hupp, Joseph T.]Jeong, NC[Jeong, Nak Cheon]
DGIST Authors
Kim, JY[Kim, Jeung Yoon]; Jeong, NC[Jeong, Nak Cheon]
Issue Date
2014-06-11
Citation
Journal of the American Chemical Society, 136(23), 8277-8282
Type
Article
Article Type
Article
Keywords
Activation EnergyAtmosphereAtmospheric ChemistryCarbon-Oxygen BondsCarbon DioxideChemistryConductanceCrystalline MaterialsCubic StructureDynamic Covalent ChemistryElectro-Chemical Impedance Spectroscopy (EIS)Electrochemical SensingElectrochemistryFundamental PropertiesGamma CyclodextrinHydroxyl GroupHydroxyl GroupsLow-Activation EnergyMetal Organic FrameworkOxygenProtonRubidium IonSensor
ISSN
0002-7863
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. © 2014 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/2652
DOI
10.1021/ja5006465
Publisher
AMER CHEMICAL SOC
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceETC1. Journal Articles


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