Reversible and Ultrasensitive Detection of Nitric Oxide Using a Conductive Two‐Dimensional Metal–Organic Framework
This paper describes the use of a highly crystalline conductive 2D copper<sub>3</sub>(hexaiminobenzene)<sub>2</sub> (Cu<sub>3</sub>(HIB)<sub>2</sub>) as an ultrasensitive (limit of detection of 1.8 part-per-billion), highly selective, reversible, and low power chemiresistive sensor for nitric oxide (NO) at room temperature. The Cu<sub>3</sub>(HIB)<sub>2</sub>-based sensors retain their sensing performance in the presence of humidity, and exhibit strong signal enhancement towards NO over other highly toxic reactive gases, such as NO<sub>2</sub>, H<sub>2</sub>S, SO<sub>2</sub>, NH<sub>3</sub>, CO, as well as CO<sub>2</sub>. Mechanistic investigations of the Cu<sub>3</sub>(HIB)<sub>2</sub>-NO interaction through spectroscopic analyses and density functional theory revealed that the Cu-bis(iminobenzosemiquinoid) moieties serve as the binding sites for NO sensing, while the Ni-bis(iminobenzosemiquinoid) MOF analog shows no noticeable response to NO. Overall, these findings provide a significant advance in the development of crystalline metal-bis(iminobenzosemiquinoid)-based conductive 2D MOFs as highly sensitive, selective, and reversible sensing materials for the low-power detection of toxic gases.
Authors
- Doran L. Pennington (ORCID: https://orcid.org/0000-0003-3315-9328)
- Jong‐Beom Baek (ORCID: https://orcid.org/0000-0003-4785-2326)
- Georganna Benedetto (ORCID: https://orcid.org/0000-0002-6551-4673)
- Katherine A. Mirica (ORCID: https://orcid.org/0000-0002-1779-7568)
- Evan Cline (ORCID: https://orcid.org/0000-0001-7709-2650)
- Christopher H. Hendon (ORCID: https://orcid.org/0000-0002-7132-768X)
- Jeong‐Min Seo (ORCID: https://orcid.org/0000-0002-5645-519X)
- Hyuk‐Jun Noh (ORCID: https://orcid.org/0000-0001-6324-3219)
Institutions
- Dartmouth College (US)
- University of Oregon (US)
- Ulsan National Institute of Science and Technology (KR)
Publication Details
- Journal
- Angewandte Chemie International Edition
- Published
- 2024-11-24
- DOI
- https://doi.org/10.1002/anie.202419869
- Citations
- 19
- Primary Topic
- Metal-Organic Frameworks: Synthesis and Applications
- Type
- article
- Field-Weighted Citation Impact
- 3.01
Funders
- National Science Foundation
- Camille and Henry Dreyfus Foundation
- San Diego Supercomputer Center
- National Research Foundation
- National Research Foundation of Korea
- National Institutes of Health
- Division of Materials Research
- Division of Chemistry
- Engineer Research and Development Center