Two Cd(II)-Based MOFs Constructed from
Tris(3′-F-4′-carboxybiphenyl)amine: Synthesis, Crystal
Structure, Luminescence Sensing towards Nitrophenols
and Acetylacetone
Jing Ru,
Yixuan Shi,
Qiang Guo,
Boxuan Hu,
Leilei Li,
Yanlan Wang,
Chunlin Ma
Affiliations
Jing Ru
Institution of Functional Organic Molecules and Materials, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
Yixuan Shi
Institution of Functional Organic Molecules and Materials, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
Qiang Guo
Institution of Functional Organic Molecules and Materials, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
Boxuan Hu
Institution of Functional Organic Molecules and Materials, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
Leilei Li
Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, Liaocheng University, Liaocheng 252059, China
Yanlan Wang
Institution of Functional Organic Molecules and Materials, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
Chunlin Ma
Institution of Functional Organic Molecules and Materials, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
Two new luminescent metal-organic frameworks (MOFs), namely [Cd4(TFBA)3(H2O)4]n (CdMOF-1) and [Cd(TFBA) (bipy)]n (CdMOF-2) (H3TFBA = tris(3′-F-4′-carboxybiphenyl)amine, 4,4′-bipy = 4,4’-bipyridine), have been prepared and successfully constructed via solvothermal conditions. Single-crystal structure analysis reveals that CdMOF-1 are two-dimensional network containing [Cd4O26] units. CdMOF-2 shows a non-interpenetration 3D microporous structure with a hexagon pore of 24.6 × 25.9 Å. Notably, CdMOF-2 exhibits turn off fluorescence behavior towards picric acid (TNP) and 4-Nitrophenol (PNP) with a limit of detection (LOD) value of 9.2 × 10−6 M and 1.81 × 10−5 M, respectively. Furthermore, CdMOF-2 shows obvious turn-on luminescence responses toward acetylacetone (Acac) with luminescence red-shift and a detection limit of 19.40 ppm. Additionally, the possible quenching or enhancing mechanism during the sensing process were evaluated by PXRD, UV-vis, and luminescence decay lifetime.
