Organic wide bandgap semiconductor is a hot research topic in optoelectronic fields. In this work, a series of diphenylether-, 9,9-biphenylfluorene- and tetraphenylsilane-centered wide bandgap materials are designed and synthesized. Comprehensive experiments and theoretical calculations are cond...

The structures of free Ph4M molecules (MSi, Ge, Sn) have been analysed by electron diffraction. Only a limited amount of reliable structural information could be determined since several models (D2d, S4, D2) fit the experimental data equally well. The phenyl rings are slightly elongated. Assum...

The preparation of a series of 6-chloro-6-dehydro-17-alkylprogesterones, of the 6-fluoro and 6-methyl derivatives of 6-dehydro-17-ethylprogesterone and of 6-chloro-1,6-bisdehydroprogesterone is described. The oral progestational activity of these and other 17-alkyl-progesterone derivatives is di...

Platelet-derived growth factor receptor β (PDGFRβ) is a transmembrane tyrosine kinase receptor and it is upregulated in various malignant tumors. Radiolabeled PDGFRβ inhibitors can be a convenient tool for the imaging of tumors overexpressing PDGFRβ. In this study, [125I]-1-{5-iodo-2-[5-(2-m...

2,6-Di(1H-benzo[d]imidazol-2-yl)pyridine (DBIP) was synthesized. The single-crystal structure of DBIP was resolved. DBIP-based OLED was fabricated. The electroluminescence for the device corresponds to a pure white emission. In addition, thermal stability, UV–vis, photoluminescence and electroc...

The synthesis of different series of 6-iodo-2-phenoxymethyl 3-substituted quinazolin-4(3H)-ones 5–17 is described. The structures of the newly synthesized compounds have been confirmed on the basis of elemental analyses, IR, 1H NMR and mass spectral data. Preliminary testing for the in vitro an...

The influence of mesoporous silica matrix on the thermolysis of ferric oxalate loaded into its pores was studied. A significant decrease in the onset of the thermal decomposition temperature of ferric oxalate was observed. The maximum of the second decomposition stage of ferric oxalate in argon ...

In the search to improve the irreversible capacity of transition-metal oxalates, iron oxalate with a multilayer and mesoporous nanostructure has been produced via a liquid-phase precipitation method with the use of a solvent. The feeding sequence and self-assembly, considering hydrophobic interl...

Oxalic acid can effectively extract arsenic bound to amorphous iron oxides via dissolution of iron oxides containing arsenic. Therefore, soil washing with oxalic acid is a promising method to remediate arsenic-contaminated soil, since arsenic is often associated with amorphous iron oxides in soi...

The work deals with the synthesis of multiferroic BiFeO3 starting from mixture of Bi citrate and Fe(II) oxalate dihydrate. By combined TG-DSC and XRPD experiments it is put into evidence that the mechanically activated mixture absorbs an extra enthalpy (+235 kJ) that is due to the reaction betwe...

Nucleation fundamentals and morphologies of iron II oxalate dihydrate crystals, FeC2O4·2H2O, in deionized water and diluted phosphoric acid (28% P2O5) media were studied. Oxalic acid and iron II sulfate heptahydrate crystals were mixed with deionized water and diluted phosphoric acid (28% P2O5)...

Quinacridone derivatives (QAs) are widely used in industrial colorant, chemical sensors and organic optoelectronic devices; however their biological applications are rarely reported. Here we describe the interaction of QAs with different DNA forms and cancer cells. Quinacridone and N,N'-bis...

The lack of ideal photosensitizers is the major limitation for clinical photodynamic therapy (PDT). Quinacridone (QA) is a mass-produced industrial organic pigment. QA derivatives are widely investigated for many applications in various fields, but rarely involved in biological applications. Her...

Robust organic thin-film transistors (OTFTs) with high temperature stability allow device integration with mass production methods like thermoforming and injection molding, and enable operation in extreme environment applications. Herein we elaborate a series of materials to make suitable gate d...

Conventional atom transfer radical polymerization (ATRP) involving metal/ligand complexes as the catalysts has been widely used for synthesis of myriads of polymers with controllable molecular weights, monomer sequences and chain end groups, but suffers from the metal-contamination in the final ...

Quinacridone, an industrial pigment, has recently shown a high charge carriers mobility in field-effect transistors. In search for new cheap organic semiconductors of improved vacuum processability we have synthesized three dialkyl derivatives of quinacridone, namely N,N′-dialkylquinacridones (...

The functionalization of the 17-methyl group of 17α-methylated 20-oxygenated steroids is reported. Two methods were employed for that purpose: the Jeger reaction with lead tetraacetate, applied to a 12α-hydroxy 17α-methyletianic ester, leading to a 12,171-epoxide and the photolytic Barton rea...

The preparation of a new series of derivatives of 17α-methylprogesterone through a sterically hindered Grignard reaction is reported.

Publisher SummaryThis chapter provides information on the chemistry and pharmacology and physicochemical properties of barbiturates, along with the tautomerism and solvation of the barbituric acid ring. Barbituric acid exists in the solid state in the trioxo structure. NMR investigation of the o...

Infrared spectra of 4-bromo-2-chloro-6-fluorophenol in low-temperature argon matrices were measured with an FTIR spectrometer. Despite that an F-type geometrical isomer, which has an intramolecular hydrogen bond of OH⋯F, is as stable in the CCl4 solution at room temperature as a Cl-type geometri...