UTSA-16(Zn) for SO<sub>2</sub> detection: elucidating the fluorescence mechanism
In this study, the potential of the metal-organic framework UTSA-16(Zn) as a fluorescence detector for SO<sub>2</sub> is explored. The material was synthesized and characterized by powder X-ray diffraction (PXRD), infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA), and its fluorescence behavior was analyzed before and after SO<sub>2</sub> exposure. A significant decrease in fluorescence intensity was observed and a LOD of 1.79 mM (∼114.6 ppm) was obtained. With the help of time-resolved photoluminescence (TRPL) experiments and X-ray photoelectron (XPS) and ultraviolet-visible (UV-vis) spectroscopy, a static quenching mechanism due to the formation of a non-fluorescent complex in the ground state (GSC) was elucidated.
Authors
- Eduardo González‐Zamora (ORCID: https://orcid.org/0000-0002-3995-9126)
- Juan L. Obeso (ORCID: https://orcid.org/0000-0002-8876-9484)
- Yoarhy A. Amador‐Sánchez (ORCID: https://orcid.org/0000-0002-5107-5358)
- Ricardo A. Peralta (ORCID: https://orcid.org/0000-0001-7573-2968)
- Ilich A. Ibarra (ORCID: https://orcid.org/0000-0002-8573-8033)
- Diego Solís-Ibarra (ORCID: https://orcid.org/0000-0002-2486-0967)
- Celene García-Carvajal (ORCID: https://orcid.org/0009-0004-5251-6620)
- Ariel Guzmán‐Vargas (ORCID: https://orcid.org/0000-0002-2213-1242)
- John Luke Woodliffe (ORCID: https://orcid.org/0000-0003-1373-9528)
- Marcela Martı́nez (ORCID: https://orcid.org/0000-0002-6236-7903)
- Nora S. Portillo‐Vélez (ORCID: https://orcid.org/0000-0003-0231-9552)
- Valeria B. López‐Cervantes
Institutions
- University of Nottingham (GB)
- Consejo Nacional de Investigaciones Científicas y Técnicas (AR)
- Universidad Autónoma Metropolitana (MX)
- Tecnológico Nacional de México (MX)
- Instituto de Salud del Estado de México (MX)
- Instituto Politécnico Nacional (MX)
- National University of San Luis (AR)
- Universidad Nacional Autónoma de México (MX)
Publication Details
- Journal
- Dalton Transactions
- Published
- 2024-12-04
- DOI
- https://doi.org/10.1039/d4dt02852j
- Citations
- 7
- Primary Topic
- Gas Sensing Nanomaterials and Sensors
- Type
- article
- Field-Weighted Citation Impact
- 1.46
Funders
- Consejo Nacional de Ciencia y Tecnología
- Engineering and Physical Sciences Research Council