Method of detecting mercury ions with a fluorescein hydrazide-appended metal-organic framework as a chemosensor
US12135281B2 · kind B2 · utility
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2References
17Claims
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Key dates
| Filing date | Jun 14, 2022 |
| Grant date | Nov 5, 2024 |
| Priority date | — |
| Expiry date | Jul 18, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/7786
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of detecting Hg2+ ions in an aqueous solution is described. The method includes contacting the aqueous solution with a metal-organic framework (MOF) chemosensor composite to form a mixture and monitoring a change in an absorption and/or a fluorescence profile of the MOF chemosensor composite in the mixture to determine a presence or absence of Hg2+ ions in the aqueous solution. The MOF chemosensor composite includes fluorescein hydrazide (FH); and a MOF, including nickel as a metal ion and at least one trimesic acid (BTC) ligand. A hydrazide group on the fluorescein hydrazide coordinates to the metal ion of the MOF.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.