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Creators/Authors contains: "Morrell, Colin T."

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  1. ; ; ; ; (, Angewandte Chemie International Edition)
    This paper describes the demonstration of a series of heterobimetallic, isoreticular 2D conductive metal–organic frameworks (MOFs) with metallophthalocyanine (MPc, M=Co and Ni) units interconnected by Cu nodes towards low-power chemiresistive sensing of ppm-levels of carbon monoxide (CO). Devices achieve sub-part-per-million (ppm) limits of detection (LOD) of 0.53 ppm toward CO at low driving voltages of 0.1 V. MPc-based Cu-linked MOFs can continuously detect CO at 50 ppm, the permissible exposure limit required by Occupational Health and Safety Assessment Series, for multiple exposures and realize CO detection in air and humid environment. Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), density functional theory (DFT) calculations, and comparison experiments suggest the contribution of Cu nodes for CO binding and the essential role of MPc units in tuning and amplifying the sensing response. 
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  2. ; ; ; ; ; ; (, Journal of Chemical Education)