Using a simple π-conjugated trimer, EDOT-phenylene-EDOT (where EDOT = 3,4-ethylenedioxythiophene), we evaluate the effect that fluorine substituents have upon changes in conformation, conjugation and oxidation potentials in π-conjugated structures. These variations are assessed as a function of the fluorine atom's propensity to feature in hydrogen and/or halogen bonding with other heteroatoms. The molecular motif was chosen because the EDOT unit presents the possibility of competing O•••X or S•••X non-covalent contacts (where X = H or F). Such non-bonding interactions are acknowledged to be highly influential in dictating molecular and polymer morphology and inducing changes in certain physical properties. We studied four compounds, beginning with an unsubstituted bridging phenylene ring and then adding one, two, or four fluorine units to the parent molecule. Our studies involve single crystal XRD studies, cyclic voltammetry, absorption spectroscopy and density functional theory calculations to identify the dominant non-covalent interactions and elucidate their effects on the molecules described. Experimental studies have also been carried out on the corresponding electrochemically synthesized polymers to confirm that these non-covalent interactions and their effects persist in polymers. Our findings show that hydrogen bonding and halogen bonding feature in these molecules and their corresponding polymers.

Objective: This study was undertaken to research of antioxidant properties of extracts of the plants and the callus biomass.Methods: The implementation of the method of cultivating the cells, tissues, and organisms in vitro for the reception of biological material of Carlina аcaulis L. (Asteraceae) is a timely issue for the medical and pharmaceutic industry, as the domestication in vitro creates the opportunity for the year-round production of the plant material as the source of biologically active substances. The seeds and plant materials (roots) of C. acaulis L. collected from natural habitat - meadows mountains Klyva Tarnychkovain Ukraine in the Carpathians. The influence of phytohormones on growth processes of plant cells is researched; the optimal conditions for the cultivation of C. acaulis L. are defined and chosen. Biomass extract is obtained and researched for the presence of biologically active substances and conducted definition of oxygen radical absorbance capacity (ORAC) of extracts of medical herbs and callus biomass of C. acaulis L.Results: C. аcaulis L. was cultivated in vitro. There was set up a scheme of sterilization of seeds with the biggest outcome of aseptic explants. There took place the investigation of the qualitative content of the extracts of callus biomass of C. acaulis L. and the detection of flavonoids and tannins. Conducted definition of ORAC of extracts of medical herbs and callus biomass of C. acaulis L. Conclusion: The obtained data showed that the investigated extracts of callus biomass and biomass of the medical herb C. acaulis L. having antioxidant activity, which makes it possible to continue research in this direction.

The physics principle of registration immune reaction by light scattering methods is concerned. The operation of laser nephelometry for measuring antigen-antibody reaction is described. The technique of obtaining diagnostic and immune reactions of interaction latex agglutination for diphtheria determination is described.

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Одержано калусну біомасу Adonis vernalis та Аquilegia nigricans на середовищі Мурасиге-Скуга з додаванням регуляторів росту (індолілоцтова кислота, нафтилоцтова кислота, кінетин) у кількості 0,1-2,0 мг/л та вітамінів (B1, B2, B6, фолієва кислота, біотин, нікотинамід, пантотенат) за 25 °С з фотоперіодом 16/8. Визначено основні вторинні метаболіти у калусних біомасах, зокрема серцеві глікозиди та загальні феноли. В екстрактах калусних біомас Adonis vernalis та Аquilegia nigricans виявлено меншу кількість загальних фенолів і більшу кількість серцевих глікозидів, ніж у екстрактах інтактних рослин.