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Researches with nitro compounds mainly relates to the synthesis of their derivatives used as unusual intermediate compounds. Because of their high reactivity in SNvin reactions, polyhalo-nitro-butadienes have been shown in many studies to have many properties as well as medical and pharmaceutical effects such as antitumor, bactericidal, fungicide and algicide. This study deals with the design, characterization of structures and the discovery of their antibacterial and antifungal properties based on new (E)-S- and (E)-N,S-polyhalonitrobutadiene analogues possessing piperazine, piperidine and morpholine groups. The antibacterial and antifungal activity of synthesized S- and N,S-substituted perhalo-nitro-butadienes were evaluated against to Escherichia coli B-906, Staphylococcus aureus 209-P, Mycobacterium luteum B-917 for bacteria and Candida tenuis VKM Y-70, Aspergillus niger F-1119 for fungi. Antimicrobial activity of the synthesized compounds was determined by using the diffusion method and serial dilution method. Compounds 2-Nitro-1,3,4,4-tetrachloro-1-hexylsulfanyl-1,3-butadiene and (E)-2,6-dimethyl-4-(3,4,4-trichloro-2-nitro-1-(octylthio)buta-1,3-dien-1-yl)morpholine with high antibacterial effect against strains E. coli and M. luteum and the derivative (E)-1-benzhydryl-4-(3,4,4-trichloro-1-(hexylthio)-2-nitrobuta-1,3-dien-1-yl)piperazine with antifungal agent against test-cultures A. niger and C. tenuis at MIC 1.9 µg/mL were identified as the most potent. Synopsis This study deals with the characterization of structures and the discovery of their antibacterial and antifungal properties based on new (E)-N,S-polyhalonitrobutadiene analogues. 1b and 7 with high antibacterial effect against strains E. coli and M. luteum. 9 with antifungal agent against test-cultures A. niger, C. tenuis at MIC 1.9 µg/mL were identified as the most potent.

The main goal of carried out tests were the impact of physicochemical properties of surface layers on the course of processes taking place on the surface of implants made of metallic biomaterials used in the bone system. As a precursor of ZnO, diethylzinc (DEZ) has been used, which reacted with water enabling the deposition of thin films. The chamber temperature was as follows—T = 200°–300 °C. The number of cycles was 500, 1000, and 1500. In the first stage, pitting corrosion test was carried out. Corrosion resistance has been tested under conditions simulating tissue environment. Moreover, the created layers were tested using electrochemical impedance spectroscopy (EIS). The conducted electrochemical tests showed the beneficial effect of the ZnO layer on the substrate made of 316 LVM steel, as evidenced by the obtained parameters describing the corrosion resistance. Furthermore, tests were performed on mechanical properties (scratch test), surface morphology (SEM and AFM method), and physical properties (wettability and thickness layers) for samples with different surface treatments. The investigations of the surface morphology of the applied ZnO layer using the ALD method showed a tendency to inherit the substrate independently of the used application parameters. On the other hand, the tests of adhesion to the substrate showed that the number of cycles of the application process has a fundamental impact on the adhesion of the applied layer to the substrate. Summarizing tests have clearly shown that the number of cycles and temperature in the case of the ZnO coating is significant and positively influences the increase of electrochemical, mechanical, and physical properties of layers.

Thanks to the efforts of many scientific groups in the last decade, the spectrum of pharmacological activity of 4-thiazolones has been significantly broadened. Amongst these are compounds with hypoglycemic, anticancer, anti-inflammatory, antimicrobial, antioxidant, antiviral, and antitubercular activity [1]. This has served as the basis for the synthesis and study of the named heterocycles modified by novel pharmacophoric groups with the aim of their practical use in pharmacy, medicine, agriculture, etc. One of the classical routes most often and efficiently used for the preparation of a thiazolidone ring is a [2+3] cyclocondensation reaction [2]. The reaction of the N-aryl-N-thiocarbamoyl--alanines 1a-e [3] with monochloroacetic acid or maleic anhydride was carried out in acetic acid in the presence of sodium acetate to give the novel 4-thiazolone derivatives of N-aryl--alanines 2a-f.