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Enhanced luminescence for detection of small molecules based on doped lanthanide compounds with a dinuclear double-stranded helicate structure

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Abstract

A novel family of lanthanide materials with a dinuclear double-stranded helicate structure Ln2L2(DBM)4(OAc)2 [Ln = Sm (1), Eu (2) Gd (3) and Yb (4)] constructed from β-diketonate (DBM = dibenzoylmethanide) and an auxiliary ligand Schiff base (H2L = N,N′-bis(salicylidene)butane-1,6-diamine) was investigated. The structures of isostructural complexes 1–4 were determined by single-crystal and powder X-ray crystallography. The optical properties of these compounds could be enhanced by doping, allowing for doped materials with tunable visible and near-infrared emission. Subsequently, a multifunctional sensor was employed to detect CH3COOH, as well as the poisonous ions Al3+ and Cr2O72−. The notable quenching effect and luminescence-based color change showed that doped materials are promising fluorescence probes for the identification and detection of specific anions, cations and organic small molecules.

Graphical abstract: Enhanced luminescence for detection of small molecules based on doped lanthanide compounds with a dinuclear double-stranded helicate structure

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Publication details

The article was received on 07 Aug 2019, accepted on 01 Oct 2019 and first published on 02 Oct 2019


Article type: Paper
DOI: 10.1039/C9NJ04104D
New J. Chem., 2019, Advance Article

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    Enhanced luminescence for detection of small molecules based on doped lanthanide compounds with a dinuclear double-stranded helicate structure

    Y. Xu, O. Sun, Y. Qi, B. Xie and T. Gao, New J. Chem., 2019, Advance Article , DOI: 10.1039/C9NJ04104D

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