A new Ag(i) metal–organic framework (Ag-MOF) [Ag(p-OH-C₆H₄COOH)₂(NO₃)]_n [Ag(PHBA)₂(NO₃)]_n, (1) (PHBA: C₈H₆O₄ {p-hydroxybenzoic acid}) was synthesized using two different methods; the laying method (single crystal) and sonochemical irradiation (nanostructures).

This scenario was designed to investigate the protein corona pattern on the pillar-layer surface of a Cu-based metal–organic framework (MOF) in human plasma. The [Cu(L)(L^/)].1.3DMA (MOF-1) {L = 4, 4^/-bipyridine and L^/ = 5-aminoisophthalic acid}, was synthesized through the sonochemical irradiation approach as well as characterized by various techniques like scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray powder diffraction and single-crystal X-ray diffraction. The space group was determined to be an orthorhombic space group (Pbam) by single-crystal X-ray diffraction. Single-crystal X-ray analyses on MOF-1 showed that Cu⁺² ion was 6-coordinated. Besides, to study and clarify interactions between MOFs and biological milieu, human whole blood plasma was selected as a model. Fluorescence spectroscopy and SDS-PAGE techniques were employed to explore quantitative and qualitative in situ characterization of protein corona as well. Furthermore, cell viability in a cancerous cell lines was evaluated by MTT assay in the presence and absence of the corona. The results from SDS-PAGE illustrated that the most adsorbed quantity among plasma proteins belongs to fibrinogen (α, β and γ chains), and this protein showed the maximum frequency on the MOF-1s surface, so the possible interactions of MOF-1s with fibrinogen also studied using fluorescence spectroscopy and corresponding data were plotted. According to the obtained data from MTT assay, these structures have concentration-dependent toxicity. In brief, based on the obtained data in the current study, the designed MOF can be introduced as a new desirable carrier for drug/gen delivery after further prerequisite assessments.

Treatment of Ni(II) acetate with picolinic acid (Hpic) and KSCN resulted in the self-assembly generation of a new heterometallic and heteroleptic 3D metal–organic framework (MOF) formulated as [Ni(μ₃-pic)₂K(μ-SCN)]_n (1). The crystal structure of 1 features a very intricate structure with a rare type of rna topology. This compound extends a still limited family of heterometallic picolinate-driven MOFs and represents the first Ni/K-picolinate derivative. Micro- and nanoscale samples of 1 (hereinafter 1s) were also obtained by a sonochemical irradiation method, wherein the effects of sonication power, reaction time, reactant concentration and temperature on the morphology of 1s were studied. Ultrasonically generated samples of 1s were characterized by standard methods and applied as photocatalysts for the photodegradation of bromocresol green (BCG) in aqueous solution under visible-light, leading to 94% degradation efficiency. The response surface methodology (RSM) with central composite design (CCD) was used for modeling and optimization of photodegradation variables such as pH, irradiation time, the initial BCG concentration, and catalyst dosage.

A new tetradentate Schiff base ligand entitled as (L = (N²E, N^2′E)‐N¹, N^1′‐(ethane‐1,2‐diyl)bis(N2‐((E)‐3‐(2‐nitrophenyl)allylidene)ethane‐1,2‐diamine) and its six cadmium(II) complexes formulated as CdLX₂ in which X is Cl, Br, I, NO₃, NCS, or N₃ were synthesized under ultrasound irradiation and characterized by various physical and spectral techniques. Moreover, some complexes were also prepared in nanostructured dimensions confirmed by scanning electron microscopy (SEM), energy dispersive X‐ray analysis (EDXA), and X‐ray powder diffraction (XRPD) techniques and then were used as precursor for preparation of CdO nanoparticles via direct calcination at 600°C. As typical, the crystal structure of cadmium(II) nitrate complex was determined using single crystal X‐ray diffraction. Accordingly, it was found that [Cd(L)(NO₃)₂] complex crystallizes in the monoclinic space group P2₁/n with two independent molecules in the asymmetric unit with two coordination modes of nitrate anions. This complex has zero‐dimensional (0D) coordination supramolecular structure. Hirshfeld surface analyses suggested that H … O (49.5%), H … H (30.3%), and H … C (11.8%) intermolecular interactions are most considerable in the crystal packing. Computational studies of ligand structure leading to electrostatic potentials of the solid state geometry and some occupied molecular orbitals (HOMO, HOMO‐1, HOMO‐2, and HOMO‐5) prevailing the contribution of nitrogen lone pairs are also reported. Thermal behavior studies of the compounds under nitrogen atmosphere from room temperature to 900°C revealed that the ligand is completely decomposed without any residual whereas the complexes are decomposed via two to four thermal steps with trace amount of metallic cadmium as residue. Moreover, antibacterial and antifungal screening well showed that the complexes inhibit from the growth of the various bacteria and fungi more efficient than free ligand especially against Gram‐positive bacteria. DNA cleavage potentials of the compounds may be one of the reasons for their antimicrobial activity.

One new lead(II) coordination supramolecular complex (CSC) (1D), [Pb2(L)2(I)4]n, L = C4H6N2 (1-methyl imidazole), has been synthesized under different experimental conditions. Micrometric crystals (bulk) or nano-sized materials have been obtained depending on using the branch tube method or sonochemical irradiation. All materials have been characterized by scanning electron microscopy (SEM), powder X-ray diffraction (PXRD) and FT-IR spectroscopy. Single crystal X-ray analyses on complex 1 showed that Pb2+ ion is 4-coordinated. Topological analysis shows that the complex 1 is 2,3,5C2 net. Finally, the role of reaction time and temperature on the growth and final morphology of the structures obtained by sonochemical irradiation have been studied.