Reversible MOF-Based Sensors for the Electrical Detection of Iodine Gas.

ABSTRACT: Iodine detection is crucial for nuclear waste clean-up and first responder activities. For ease of use and durability of response, robust active materials that enable the direct electrical detection of I₂ are needed. Herein, a large reversible electrical response is demonstrated as I₂ is controllably and repeatedly adsorbed and desorbed from a series of metal-organic frameworks (MOFs) MFM-300(X), each possessing a different metal center (X = Al, Fe, In, or Sc) bridged by biphenyl-3,3',5,5'-tetracarboxylate linkers. Impedance spectroscopy is used to evaluate how the different metal centers influence the electrical response upon cycling of I₂ gas, ranging from 10× to 10⁶× decrease in resistance upon I₂ adsorption in air. This large varia

SUBMITTER: Small LJ 

PROVIDER: S-EPMC6814244 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature