Year: 2024
Type: article
Abstract: A three‐dimensional metal‐organic framework named as [TbL(OH)2](COOH)3 ⋅ (solvent)x (Tb‐MOF), was successfully obtained by using Tb(NO3)3 ⋅ 6H2O and 1,1′,1′′‐(2,4,6‐trimethylbenzene‐1,3,5‐triyl)tris(methylene)‐tris(4‐carboxy‐pyridinium)tribromide (H3LBr3) as raw materials. A series of fluorescence detection experiments demonstrate that Tb‐MOF shows a fluorescence quenching effect on NB. Moreover, Tb‐MOF also exhibits a very fast fluorescence quenching response to trace Fe3+ ions, which is unaffected by the existence of other competitive metal cations. The linear curve between the fluorescence intensity of Tb‐MOF and the concentration of Fe3+ was plotted by the fluorescence titration experiments data. The calculated LOD for Fe3+ ions is 2.86×10−6 M. Therefore, based on the characteristics of Tb‐MOF, it can be regarded as a luminescent sensor for detecting NB and Fe3+. We have also explored the quenching mechanism of Tb‐MOF as a fluorescent sensing material.
Authors: Shiman Zhang, Jiahui Li, Songjiang Feng, Liming Fan, Yanlian Liu, Rongmei Wen
Institution: North University of China
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4403947196