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Improved luminescence properties by the self-assembly of lanthanide compounds with a 1-D chain structure for the sensing of CH3COOH and toxic HS− anions.
- Source :
-
CrystEngComm . 10/21/2019, Vol. 21 Issue 39, p5965-5972. 8p. - Publication Year :
- 2019
-
Abstract
- A novel family of lanthanide compounds with a 1-D chain structure [Ln2L(TTA)4(OAc)2]n [Ln = Sm (1), Eu (2) Gd (3) and Yb (4)] was constructed from β-diketonate (TTA = 2-thenoyltrifluoroacetone) and an auxiliary ligand Schiff base (H2L = N,N′-bis(salicylidene)butane-1,6-diamine). The structures of the isostructural complexes 1–4 were determined via single-crystal and powder X-ray crystallography. The optical properties of these compounds could be simply enhanced using a doping method, enabling the doped materials with tunable visible and near-infrared emission. The quantum yields of the doped samarium and europium compounds reached 6.8% and 76.2%, respectively, which were higher compared with other previously reported studies. Subsequently, a multifunctional sensor was employed to detect CH3COOH and poisonous HS− anions. The notable quenching effect proved that this doped material is a promising fluorescence probe for the sensing of anions and organic small molecules with high identification ability and sensitivity. Moreover, the possible mechanism for luminescence sensing has been studied in detail. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14668033
- Volume :
- 21
- Issue :
- 39
- Database :
- Academic Search Index
- Journal :
- CrystEngComm
- Publication Type :
- Academic Journal
- Accession number :
- 139013270
- Full Text :
- https://doi.org/10.1039/c9ce01077g