Abstract
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 a sub-part-per-million (ppm) limit of detection (LOD) of 0.53 ppm toward CO at a low driving voltage of 0.1 V. MPc-based Cu-linked MOFs can continuously detect CO at 50 ppm, the permissible exposure limit required by the Occupational Safety and Health Administration (OSHA), for multiple exposures, and realize CO detection in air and in humid environment. Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), density functional theory (DFT) calculations, and comparison experiments suggest the contribution of Cu nodes to CO binding and the essential role of MPc units in tuning and amplifying the sensing response.
Publication Date
2-1-2022
Publisher
Wiley
Journal Title
Angewandte Chemie
Digital Object Identifier (DOI)
Version of Record: https://dx.doi.org/10.1002/anie.202113665
Document Type
Article
Recommended Citation
A. Aykanat, Z. Meng, R. M. Stolz, C. T. Morrell, K. A. Mirica, Angew. Chem. Int. Ed. 2022, 61, e202113665.
Comments
This is an Author Manuscript of an article published by Wiley in Angewandte Chemie in 2021, Version of Record available online: https://dx.doi.org/10.1002/anie.202113665