Bimetallic Two‐Dimensional Metal–Organic Frameworks for the Chemiresistive Detection of Carbon Monoxide
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 22, 2021
- Source ID
- 10.1002/anie.202113665
Entities
People
- Aylin Aykanat
- Colin T. Morrell
- Katherine A. Mirica
- Robert M. Stolz
- Zheng Meng
Organizations
- Alfred P. Sloan Foundation
- Army Research Office
- Cold Regions Research and Engineering Laboratory
- Dartmouth College
- National Institutes of Health
- National Science Foundation of Sri Lanka
- Research Corporation
- The Camille and Henry Dreyfus Foundation