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Lanthanide-based metal–organic framework materials as bifunctional fluorescence sensors toward acetylacetone and aspartic acid.
- Source :
-
CrystEngComm . 4/7/2022, Vol. 24 Issue 13, p2464-2471. 8p. - Publication Year :
- 2022
-
Abstract
- A family of novel lanthanide-based metal–organic frameworks (Ln-MOFs) with bifunctional fluorescence sensing properties, namely, {[(CH3)2NH2]5[Ln5(TBAPy)5]·solvent}n (Ln = Gd (1), Tb (2), and Dy (3); H4TBAPy = 1,3,5,7-tetra(4-carboxybenzene)pyrene), was synthesized and structurally characterized. Structural analysis reveals that Ln-MOFs1–3 are isomorphic, and Gd-MOF1 has a three-dimensional structure with a porosity of 20.40%. Due to the existence of the pyrene ring featuring a conjugated system, Ln-MOFs1–3 exhibit strong fluorescence emission. Interestingly, Ln-MOFs1–3 could be considered as good bifunctional fluorescence sensors toward acetylacetone and aspartic acid via a turn-on effect. The detection limits of Tb-MOF2 toward acetylacetone and aspartic acid are 0.129 and 0.025 ppm, respectively. Furthermore, the probable sensing mechanisms for target analytes were also discussed in detail. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14668033
- Volume :
- 24
- Issue :
- 13
- Database :
- Academic Search Index
- Journal :
- CrystEngComm
- Publication Type :
- Academic Journal
- Accession number :
- 155971577
- Full Text :
- https://doi.org/10.1039/d2ce00174h