A Fluorine-Functionalized Tb(III)-Organic Framework for Ba2+ Detection

Yang Zhang; Hua Tan; Jiaping Zhu; Linhai Duan; Yuchi Ding; Fenglan Liang; Yongshi Li; Xinteng Peng; Ruomei Jiang; Jiaxin Yu; Jianjiong Fan; Yuhang Chen; Rimeng Chen; Deyun Ma

doi:10.3390/molecules29245903

A Fluorine-Functionalized Tb(III)-Organic Framework for Ba²⁺ Detection

Molecules. 2024 Dec 13;29(24):5903. doi: 10.3390/molecules29245903.

Authors

Yang Zhang¹, Hua Tan¹, Jiaping Zhu¹, Linhai Duan¹, Yuchi Ding², Fenglan Liang², Yongshi Li³, Xinteng Peng³, Ruomei Jiang³, Jiaxin Yu³, Jianjiong Fan³, Yuhang Chen³, Rimeng Chen⁴, Deyun Ma³

Affiliations

¹ College of Chemistry, Guangdong University of Petrochemical Technology, Maoming 525000, China.
² College of Life Science, Zhaoqing University, Zhaoqing 526061, China.
³ School of Food and Pharmaceutical Engineering, Zhaoqing University, Zhaoqing 526061, China.
⁴ Zhangjiang Institute for Food and Drug Control, Zhanjiang 524008, China.

Abstract

The development of lanthanide-organic frameworks (Ln-MOFs) using for luminescence sensing and selective gas adsorption applications is of great significance from an energy and environmental perspective. This study reports the solvothermal synthesis of a fluorine-functionalized 3D microporous Tb-MOF with a face-centered cubic (fcu) topology constructed from hexanuclear clusters (Tb₆O₃₀) bridged by fdpdc ligands, formulated as {[Tb₆(fdpdc)₆(μ₃-OH)₈(H₂O)₆]·4DMF}_n (1), (fdpdc = 3-fluorobiphenyl-4,4'-dicarboxylate). Complex 1 displays a 3D framework with the channel of 7.2 × 7.2 Å² (measured between opposite atoms) perpendicular to the a-axis. With respect to Ba²⁺ cation, the framework of activated 1 (1a) exhibits high selectivity and reversibility in luminescence sensing function, with an LOD of 4.34665 mM. According to the results of simulations, compared to other small gas molecules (CO₂, N₂, H₂, CO, and CH₄), activated 1 (1a) shows a high adsorption selectivity for C₂H₂ at 298 K.

Keywords: Ba2+ cation; Tb-MOF; fluorine-functionalized; luminescence sensor; selective C2H2 capture.

Grants and funding

This research was funded by the characteristics of innovative projects in Colleges and Universities in Guangdong Province (Nos. 202310580019, 202310580048, and 2024014747), Zhaoqing University-Zhangjiang Institute for Food and Drug Control Joint Laboratory (No. 51), the National Natural Science Foundation of China (No. 22478135), and Guangdong Science and Technology Innovation Strategy Special Foundation (No. 240718108184842).