3D Ln-MOFs as multi-responsive luminescent probes for efficient sensing of Fe3+, Cr2O72−, and antibiotics in aqueous solution

Yun-Shan Xue; Ji Ding; Dan-Ling Sun; Wei-Wei Cheng; Xuan-Rong Chen; Xing-Cai Huang; Jun Wang

doi:10.1039/D1CE00399B

3D Ln-MOFs as multi-responsive luminescent probes for efficient sensing of Fe³⁺, Cr₂O₇²⁻, and antibiotics in aqueous solution†

Yun-Shan Xue,^a Ji Ding,^a Dan-Ling Sun,^a Wei-Wei Cheng,^b Xuan-Rong Chen,^a Xing-Cai Huang

*^a and Jun Wang

*^a

Author affiliations

* Corresponding authors

^a School of Chemistry & Environmental Engineering, Yancheng Teachers University, Yancheng 224007, China
E-mail: huangxc82@126.com, wjyctu@hotmail.com

^b School of Chemistry and Bioengineering, Nanjing Normal University Taizhou College, Taizhou 225300, China

Abstract

Two families of lanthanide metal–organic frameworks (Ln-MOFs), namely {[Ln₂L₂(DMF)₄]·xDMF·yH₂O}n (Ln = Ce(1), Pr(2), Sm(3), Eu(4), Gd(5); x = 0, 1; y = 0, 1) and {[Ln₂L₂(H₂O)_2.5]}_n (Ln = Dy(6), Ho(7)), have been solvothermally synthesized based on the semi-rigid tripodal ligand 5-(4-carboxybenzyloxy)isophthalic acid (H₃L). Utilizing the excellent luminescence property and water stability, Eu(4) exhibited efficient luminescence responses toward Fe³⁺, Cr₂O₇²⁻, and NFT/NZF antibiotics in aqueous medium with high sensitivity and selectivity. The detection limits (LODs) are 3.69 μM for Fe³⁺ ion, 4.01 μM for Cr₂O₇²⁻ anion and 9.92 μM/11.4 μM for NFT/NZF antibiotics, suggesting that Eu(4) is a good and simple multifunctional luminescent sensor. Additionally, the Gd(III) ions exhibit a weak antiferromagnetic interaction in the dinuclear SBUs of Gd(5), and Dy(6) shows slow magnetic relaxation behaviors under zero dc field.

This article is part of the themed collection: Coordination Networks

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Article information

DOI: https://doi.org/10.1039/D1CE00399B
Article type: Paper
Submitted: 24 Mar 2021
Accepted: 20 Apr 2021
First published: 20 Apr 2021

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CrystEngComm, 2021,23, 3838-3848

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3D Ln-MOFs as multi-responsive luminescent probes for efficient sensing of Fe³⁺, Cr₂O₇²⁻, and antibiotics in aqueous solution

Y. Xue, J. Ding, D. Sun, W. Cheng, X. Chen, X. Huang and J. Wang, CrystEngComm, 2021, 23, 3838 DOI: 10.1039/D1CE00399B

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