A Water-Stable 3D Eu(III)-Organic Framework as a Bi-Functional Ratiometric Luminescent Sensor for Fast, Sensitive and Selective Detection of ODZ and Hg2+ in Aqueous Media

• Published in: Jiégòu huàxué Vol. 41; no. 11; pp. 2211110 - 2211116
• Main Authors: Gao, Xiuting, Chen, Nana, Cao, Minglei, Shi, Yang, Zhang, Qingfu
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 28.10.2022; College of Chemistry and Chemical Engineering,Liaocheng University,Liaocheng,Shandong 252059,China%Shandong Ruijie New Material Co.Ltd,Liaocheng,Shandong 252000,China
• Subjects: antibiotics; lanthanide MOF; metal ions; ratiometric luminescent sensor; water-stability; ratiometric luminescent sensor; antibiotics; metal ions; water-stability; lanthanide MOF
• ISSN: 0254-5861
• DOI: 10.14102/j.cnki.0254-5861.2022-0171

The fast, sensitive and selective detection of some antibiotics and heavy metal cations in water is highly desirable for environmental protection and human health, but it is still currently challenging. In this work, a new luminescent Eu(III)-based metal-organic framework (MOF), {[(CH3)2NH2][Eu(L)2(H2O)2]·xDMF}n (1) [H2L = 4,4’-((naphthalene-1,4-dicarbonyl)bis(azanediyl))dibenzoic acid], was solvothermally synthesized. Complex 1 exhibits good water stability and luminescent property and could serve as a bifunctional ratiometric luminescent sensor for fast, sensitive and selective detection of ornidazole (ODZ) and Hg2+ in aqueous solution. The corresponding luminescent mechanism has also been discussed. This work indicates that 1 as a promising luminescent material exhibits luminescent quenching behavior for ODZ and luminescent enhancement behavior for Hg2+ in H2O, which will promote the practical application of Ln-MOF-based ratiometric luminescent sensors in monitoring antibiotics and metal ions pollutants in the environmental water matrices. A new luminescent Eu(III)-based metalorganic framework (MOF) with 3D porous structure and good water stability and luminescent property has been synthesized. It could serve as a bi-functional ratiometric luminescent sensor which exhibits luminescent quenching detection for antibiotics and luminescent enhancement detection for cations in water matrices.