Eu3+-β-diketone functionalized covalent organic framework hybrid material as a sensitive and rapid response fluorescent sensor for glutaraldehyde

A double responsive fluorescent platform for sensing heavy metal ions based on a dual-emitting fluorescent covalent organic framework hydrogel film

“…Synthesis of a Dye@TpDq and Eu@Dye@TpDq hydrogel film (1) TpDq was synthesized by using reported procedures. 41 Upon the addition of trace water and catalyst, Tp and Dq were mixed and ground, and then heated in an oven. After washing, filtration and drying, the brown-red product TpDq was obtained.…”

The postsynthetic renaissance of luminescent lanthanide ions on crystalline porous organic framework materials

“…10b). 114 The above illustrations about the coordinated PSM method suggest that COFs with free N and O coordination sites are suitable for the fabrication of Ln@COFs.…”

“…105 (b) The preparation process from TpDq to Eu(TTA)@TpDq by coordinated PSM. 114 in the TpDq framework to obtain the Eu-TTA-TpDq material (Fig. 10b).…”

Metalated covalent organic frameworks: from synthetic strategies to diverse applications

“…To construct turn-off fluorescent probes, Yan et al prepared Eu-TAA@TpDq with bright red emission by introducing the additional β-diketone ligand 2-thenoyltrifluoroacetone (TAA) into the Eu( iii )-coordinated TpDq COF. 763 Common aldehydes, including formaldehyde, acetaldehyde, propionaldehyde, butyraldehyde, benzaldehyde, and glutaraldehyde, quenched the fluorescence of Eu-TAA@TpDq to varying degrees. Among them, glutaraldehyde diminished the fluorescence intensity at 613 nm to 1/398 of the initial value, successfully realizing the fluorescence sensing of glutaraldehyde at a detection limit of 4.55 μM.…”