Synthesis, crystal structure and properties of novel isostructural two-dimensional lanthanide-based coordination polymers with 2,3,5,6-tetrafluoro-1,4-benzenedicarboxylic acid

Synthesis, supramolecular isomerism, and photoluminescence of scandium(III) complexes with tetrafluoroterephthalate ligand

Here we present a new family of seven Sc(III) complexes with tetrafluoroterephthalate ligand (tFBDC2−), having non-polymeric and polymeric 2D and 3D structures. These complexes are characterized by SC XRD, PXRD,...

Halogenated Terephthalic Acid "Antenna Effects" in Lanthanide-SURMOF Thin Films

Lanthanide-based crystalline coatings have a great potential for energy-conversion devices, but until now luminescent surface-anchored materials were difficult to fabricate. Thin films, called lanthanides surface-mounted metal-organic frameworks (SURMOFs) with tetrasubstituted halide (fluorine, chlorine, and bromine) terephthalic acid derivative linkers as a basic platform for optical devices, exhibit a high quantum yield of fluorescence visible to the naked eyes under ambient light. We show that we can tune the luminescent properties in thin films by halide substitution, which affords control over the molecular structure of the material. We rationalize the mechanism for the modulation of the photophysical properties by "antenna effect", which controls the energy transfer and quantum yields using experimental and theoretical techniques for chelated lanthanides as a function of the type of atom substitutions at the phenyl rings and the resulting dihedral angle between phenyl rings in the linkers and carboxylate groups.

Supramolecular assembly of lanthanide-2,3,5,6-tetrafluoroterephthalic acid coordination polymers via fluorine⋯fluorine interactions: a platform for luminescent detection of Fe3+ and nitroaromatic compounds

F⋯F interactions stabilize {[Ln(TFTA)_1.5(H₂O)₂]·H₂O}_n 2D coordination polymers which selectively detect Fe³⁺ and p-nitrophenols.

Crystal structure of poly-[tetraaqua-bis(μ4-2,5-dibenzoyl-1,4-benzenedicarboxylato-κ4O1:O2:O3:O4)-μ2-2,5-dibenzoyl-1,4-benzenedicarboxylato-k4O5,O6: O5′,O6′-didysprosium(III)] tetrahydrate C33H26O13Dy

C33H26O13Dy, triclinic, P1̅ (no. 2), a = 10.5417(4) Å, b = 12.0923(6) Å, c = 12.4320(4) Å, α = 82.373(3)°, β = 81.126(3)°, γ = 89.446(3)°, V = 1551.83(11) Å3, Z = 2, Rgt(F) = 0.0357, wRref(F2) = 0.0820, T = 293 K.

The Biginelli reaction under batch and continuous flow conditions: catalysis, mechanism and antitumoral activity

Biginelli scaffolds have been synthesized using two new coordination polymer as catalysts under batch or continuous flow conditions. The mechanism of the reaction and the antitumoral activity of the obtained DHPMs were also evaluated.

Bright luminescence in lanthanide coordination polymers with tetrafluoroterephthalate as a bridging ligand

Ten lanthanide coordination polymers with tetrafluoroterephthalate as the linker were synthesized. Europium and terbium compounds exhibit intense red and green emission in the visible region with quantum yields up to 67%.

A copper-based layered coordination polymer: synthesis, magnetic properties and electrochemical performance in supercapacitors

A layered copper-based coordination polymer ([Cu(hmt)(tfbdc)(H₂O)], Cu-LCP) has been synthesized, which shows ferromagnetic interactions between the adjacent copper(ii) ions and an excellent capacitive performance in supercapacitors.

Hydrogen-bonding 2D metal-organic solids as highly robust and efficient heterogeneous green catalysts for Biginelli reaction

Two new Zn(II) and Cd(II) MOFs have been synthesized. These MOFs have been applied as heterogeneous catalysts for the green synthesis of a variety of dihydropyrimidinone derivatives through the Biginelli reaction and the desired products were obtained in high yields with short reaction time under mild solvent- free conditions. Moreover, the MOF catalysts may be readily recovered after the reaction and reused for many cycles.