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A water-stable lanthanide metal-organic framework for fluorimetric detection of ferric ions and tryptophan
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- Abdelhamid, Hani Nasser (author)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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- Bermejo-Gómez, Antonio (author)
- Stockholms universitet,Institutionen för organisk kemi
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- Martín-Matute, Belén (author)
- Stockholms universitet,Institutionen för organisk kemi
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- (creator_code:org_t)
- 2017-06-13
- 2017
- English.
- In: Microchimica Acta. - : Springer Science and Business Media LLC. - 0026-3672 .- 1436-5073. ; 184:9, s. 3363-3371
- Journal article (peer-reviewed)
Abstract
Subject headings
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- The preparation of a highly water stable and porous lanthanide metal-organic framework (MOF) nanoparticles (denoted SUMOF-7II; SU refers to Stockholm University) is described. SUMOF-7II was synthesized starting from the tritopic linker of 2,4,6-tri-p-carboxyphenyl pyridine (H3L2) and La(III) as metal clusters. SUMOF-7II forms a stable dispersion and displays high fluorescence emission with small variation over the pH range of 6 to 12. Its fluorescence is selectively quenched by Fe(III) ions compared to other metal ions. The intensity of the fluorescene emission drops drops linearly in 16.6–167 μM Fe(III) concentration range, and Stern-Volmer plots are linear. The limit of detection (LOD) is 16.6 μM (at an S/N ratio of >3). This indicator probe can also be used for selective detection of tryptophan among several amino acids. Compared to the free linker H3L2, SUMOF-7II offers improved sensitivity and selectivity of the investigated species.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- Lanthanum-organic frameworks
- Luminescence
- Metal ions detection
- Amino acids
- Sensing
- Inorganic Chemistry
- oorganisk kemi
Publication and Content Type
- ref (subject category)
- art (subject category)
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