Two new Cd(II)/Zn(II) coordination polymers: luminescence properties and synergistic treatment activity with ultrasound therapy on uterine fibroids

Through the self-assembly reaction of 5-substituted isophthalic acid and bis(imidazolyl) ligands with Cd(II) ion or Zn(II) ion, two new coordination polymers with the chemical formulae of [Cd(5-meo-ip)(bmip)]_n (1) and [Zn(5-pro-ip)(bip)]_n·2 n(H₂O) (2) (5-meo-H₂ip = 5-methoxyisophthalic acid, 5-pro-H₂ip = 5-propoxyisophthalic acid, bmip = 1,3-bis(2-methylimidazolyl)propane bip = 1,3-bis(imidazolyl)propane) were successfully obtained and structurally characterized by a series of characterization techniques. Moreover, compounds 1-2 show intense blue luminescence at room temperature. Furthermore, the assessment of their treatment activity on the uterine fibroids combined with ultrasound therapy was evaluated and the specific mechanism was investigated at the same time. Firstly, the effect of compound treatment on uterine fibroids apoptosis was detected via flow cytometry. Next, the apoptotic signaling pathway activation was detected through the Caspase-3 and Caspase-8 Activity Assay Kit.

Three 3D LnIII-MOFs based on a nitro-functionalized biphenyltricarboxylate ligand: syntheses, structures, and magnetic properties

Cluster, chain or layer-based 3D Ln-MOFs have been synthesized and they exhibit ferromagnetic or antiferromagnetic interactions. Furthermore, the Dy-MOF shows slow relaxation behavior.

CdII -Organic Frameworks Fabricated with a N-Rich Ligand and Flexible Dicarboxylates: Structural Diversity and Multi-Responsive Luminescent Sensing for Toxic Anions and Ethylenediamine

Three metal-organic frameworks {[Cd(L)(glu)]⋅3 H₂ O}_∞ (1), {[Cd₂ (L)₂ (adi)₂ ]⋅5 H₂ O}_∞ (2) and {[Cd(L)(sub)]⋅3 H₂ O⋅DMA }_∞ (3) (L=pyridine-3,5-bis(5-azabenzimidazole), H₂ glu=glutaric acid, H₂ adi=adipic acid and H₂ sub=suberic acid) were obtained under solvothermal conditions. Complex 1 shows a 2D (4,4) network constructing of Cd₂ -glu and Cd-L chains. Complex 2 presents a 2-fold interpenetrating 3D framework with pcu topology. Complex 3 is a 3D framework with cds topology. Three complexes with versatile structures were obtained by changing aliphatic dicarboxylate ligands with different lengths based on a N-rich ligand. Moreover, the fluorescence measurements indicate that complex 1 is a good multifunctional chemosensor for the detection of Cr₂ O₇ ^2- and MnO₄ ^- anions by fluorescence quenching effect, and ethylenediamine by fluorescence enhancement effect, with detection limits of 1.196 ppm, 0.551 ppm and 64.572 ppm, respectively. Both complexes 2 and 3 can selectively sense Cr₂ O₇ ^2- anion with detection limits of 1.126 ppm for 2 and 0.831 ppm for 3 by a fluorescence quenching effect.

Hydrothermal syntheses, structural characterizations, and magnetic properties of five MOFs assembled from C2-symmetric ligand of 1,3-di(2′,4′-dicarboxylphenyl)benzene with various coordination modes

Five new complexes with appealing structural features from 0D paddle wheel {Cu₂(COO)₄} SBUs to 3D frameworks were reported to better understand the synthon selectivity in multifunctional crystal structures.

Solvent modulated assembly of two Zn metal–organic frameworks: syntheses, luminescence, and gas adsorption properties

Two new MOFs based on H₂btca and zinc – [Zn(btca)(2,2′-bipy)]_n (1) and [Zn₂(btca)₂(bpy)(H₂O)]_n·n(DMA) (2) – have been designed and synthesized by modulating the solvent.

Structural diversity of five coordination polymers based on 2,6-bis(3,5-dicarboxyphenyl)pyridine ligand: solvothermal syntheses, structural characterizations, and magnetic properties

Five CPs, featuring diverse structures, have been assembled from the mixed ligands of H₄BDP and bib under different reaction conditions.

A new metal-organic framework with ultra-high surface area

A new mesoporous MOF, Zn4O(bpdc)(btctb)(4/3) (DUT-32), containing linear ditopic (bpdc(2-); 4,4'-biphenylenedicarboxylic acid) and tritopic (btctb(3-); 4,4',4''-[benzene-1,3,5-triyltris(carbonylimino)]tris-benzoate) linkers, was synthesised. The highly porous solid has a total pore volume of 3.16 cm(3) g(-1) and a specific BET surface area of 6411 m(2) g(-1), adding this compound to the top ten porous materials with the highest BET surface area.