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Ratiometric detection of I− using a dysprosium-based metal–organic framework with a single emission center.
- Source :
-
Dalton Transactions: An International Journal of Inorganic Chemistry . 5/14/2023, Vol. 52 Issue 18, p6061-6066. 6p. - Publication Year :
- 2023
-
Abstract
- In this study, a dysprosium-based metal–organic framework (MOF) sensor (Dy-MOF) was developed for the ratiometric detection of I− in aqueous medium. Upon excitation at 230 nm, Dy-MOF shows two dominant emission bands at 464 nm and 574 nm assigned to (4F, 4D)5/2 → 6H9/2 + 6F11/2 and 4F9/2 → 6H13/2 transition of Dy3+, respectively, which have different sensitivities toward iodide ions. The introduction of I− slightly weakened the blue emission at 464 nm and significantly quenched the yellow emission at 574 nm. Thus, ratiometric sensing for iodide was realized using the yellow-to-blue intensity ratio of Dy3+. Dy-MOF exhibits superior sensing behavior towards I− with high selectivity, sensitivity and low detection limit (24 nM). This study also provides a strategy for the construction of a ratiometric sensor with dual-emission bands originating from only one emission center. [ABSTRACT FROM AUTHOR]
- Subjects :
- *METAL-organic frameworks
*DETECTION limit
*IODIDES
Subjects
Details
- Language :
- English
- ISSN :
- 14779226
- Volume :
- 52
- Issue :
- 18
- Database :
- Academic Search Index
- Journal :
- Dalton Transactions: An International Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 163602182
- Full Text :
- https://doi.org/10.1039/d3dt00543g