Cobalt(II)-Based 3D Coordination Polymer with Unusual 4,4,4-Connected Topology as a Dual-Responsive Fluorescent Chemosensor for Acetylacetone and Cr₂O₇^2–

Abstract

A cobalt­(II) coordination polymer with an unusual 4,4,4-connected network was hydrothermally synthesized and observed with high thermal, solvent, and pH stabilities. This polymer can serve as the first dual-responsive fluorescent chemosensor for the selective detection of acetylacetone and Cr2O7 2– ion (pH 3.0) in aqueous systems.

Retracted: Two Co(II) coordination polymers: Inhibitory effect on chronic myocarditis by reducing expression levels of the hs‐cTnT in the cardiomyocytes

“…Many elements, for instance, metal ions and anti‐ions, solvent systems, and organic ligands, have a great effect on the molecular structures, which makes the construction of the molecular structures hard to predict. [ 13–16 ] Among them, the selection of the ligands is a pivotal factor. The relative positions, functional groups, and donor atoms can directly change the skeleton structures.…”

A New Fluorescence MOF for Highly Sensitive Detection of Acetylacetone

“…In general, if the lowest unoccupied molecular orbital (LUMO) of the electron‐rich frame holds a higher energy level than that of the analyte, then there is a probability of electron transfer. The results showed that the LUMO level of H 3 L ligand (−1.96 eV, Figure 8) is higher than that of acac (−2.36 eV), [32] confirming the existence of electron transfer, which reduces the fluorescence of MOF 1 , (iv) Theoretically, acac molecule should be a potential candidate for hydrogen‐bonded synthon due to keto‐enol tautomerism. It is estimated that there might be H‐bond interaction between the −OH moiety of the enol form of acac and the uncoordinated oxygen atom of H 3 L ligand.…”

A pH-stable Ag(i) multifunctional luminescent sensor for the efficient detection of organic solvents, organochlorine pesticides and heavy metal ions

“…The K sv and detection limit values for LCP 1 are comparable to those of the CPs reported in the literature (Tables S4 and S5 †). 10,[27][28][29][30][31][32] The sensing selectivity of LCP 1 for Hacac or NB in the presence of other interferential analytes (including DMF, ProOH, DMA, PhH, THF, Py, EtOH, CyH, MeOH, ACN, iso-ProOH, EG, DCM, 1,4-dioxane, and DMSO) were evaluated. First, equal amount of interferents were mixed to form a mixture.…”