Issue 39, 2019

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

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.

Graphical abstract: 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

Supplementary files

Article information

Article type
Paper
Submitted
17 Jul 2019
Accepted
03 Sep 2019
First published
04 Sep 2019

CrystEngComm, 2019,21, 5965-5972

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

Y. Xu, P. Chen, T. Gao, H. Li and P. Yan, CrystEngComm, 2019, 21, 5965 DOI: 10.1039/C9CE01077G

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