Issue 42, 2019

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

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

Supplementary files

Article information

Article type
Paper
Submitted
07 Aug 2019
Accepted
01 Oct 2019
First published
02 Oct 2019

New J. Chem., 2019,43, 16706-16713

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, 43, 16706 DOI: 10.1039/C9NJ04104D

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