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

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...

Two fluorescent copper phosphonate complexes for sensing antibiotics, ketones and Fe3+ in water

“…However, for other antibiotics, the quenching efficiency is inconsistent with the LUMO energy level sequence, indicating that there may be other more important sensing methods in the system. [49] The spectral overlap between the absorption and emission spectra of the frame structure may also be the cause of fluorescence quenching. [50] The overlap of the emission spectrum of the complex with the UV-vis absorption band of some antibiotics may explain the mechanism of this high-efficiency fluorescence quenching phenomenon of complexes 1 and 2.…”

Lanthanide ternary mixed-ligand coordination polymers as fluorescent sensors for the sensitive and selective detection of chlorogenic acid

“…24 The detection of drug molecules, toxic molecules and biomarkers based on Ln-CPs has been reported with increasing frequency in the recent past. [25][26][27][28][29] Herein, we designed and synthesized a series of Ln-CPs with the structure of [Ln(bct)(phen)(ox) 0.5 (H 2 O)] n (Ln = Eu (1), Tb (2), Sm (3), Dy (4), Ce ( 5), H 2 bct = 3,5-bis(4′carboxyphenyl)-1,2,4-triazole, phen = phenanthroline and H 2 ox = oxalic acid). In particular, structure 1 exhibited intense luminescence under ultraviolet light and highly stable luminescent nature over a wide pH range (5)(6)(7)(8)(9)(10)(11)(12).…”

Two coordination polymers as multi-responsive luminescent sensors for the detection of UO22+, Cr(vi), and the NFT antibiotic

“…Among the various reported novel chemical sensors, luminescent coordination polymers (LCPs) could be promising candidates and have drawn much attention because of their potential application prospects in the detection of environmental contaminants at the trace level. 40–47 Previous studies have shown that numerous LCPs exhibit outstanding abilities to detect environmental contaminants such as metal ions ( e.g. , Pb 2+ , Al 3+ ), toxic inorganic anions ( e.g.…”