The development in the use of polyaniline (PANI) in advanced studies makes us draw attention to the presented research and combine it into one study like this one. The unique composition of PANI qualifies it for use in electrochemical applications in addition to many other applications whose use depends on its mechanical properties. Based on this, it is necessary to limit the reactions that produce PANI and the cheapest cost, and then limit the current uses in the formation of nanocomposites with metals, their oxides, and/or carbon nanocomposites in order to determine what is missing from them and work on it again to expand its chemistry. The development in the use of PANI in advanced studies makes us draw attention to the research presented on PANI and combine it into one study. One of the very important things that made PANI possess a very huge research revolution are preparation in a variety of ways, easy and inexpensive, from which a daily product can be obtained with very high purity, as well as its distinctive properties that made it the focus of researchers in various scientific departments. The unique structure of PANI, which is easy to prepare in its pure form or with various chemical compounds including metals, metal oxides, and carbon nanomaterials (such as carbon nanotubes, graphene, graphene oxide, and reduced graphene oxide), qualifies it for use in electrochemical applications. The various studies reviewed showed that PANI gave good results in the applications of super capacitors. In some of the studies mentioned later, it gave a specific capacitance of 503 F/g, cycle stability 85% at 10,000 cycles, energy density 8.88 kW/kg, and power density 96 W h/kg. It was also noted that these values improved significantly when using PANI with its nanocomposites. Because of its good electrical conductivity and the possibility of preparing it with a high surface area with nanostructures in the form of nanowires, nanofibers, and nanotubes, PANI was used as a gas sensor. We have noticed, through the studies conducted in this field, that the properties of PANI as a basic material in gas sensors are greatly improved when it is prepared in the form of PANI nanocomposites, as explained in detail later. From this review, we tried with great effort to shed light on this attractive polymer in terms of its different preparation methods, its distinctive properties, its nanocomposites, and the type of polymerization used for each nanocomposites, as well as its applications in its pure form or with its nanocomposites in the supercapacitor and gas sensor applications.

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Heterocyclic compounds have been used extensively used in pharmaceutical research area due to their effective biological activities. Thiazine, a heterocyclic compound with four carbon atoms, one nitrogen and one sulfur atoms which have promising pharmacological activities that have attracted the attention of scientists and researchers. In this research [3-(4-Amino-phenyl)-2-(4-nitro-phenyl)-2,3-dihydro-benzo[e][1,3]thiazin-4-one [comp. (2)] was used as a synthone for the preparation of Schiff bases [comp.(3)-(7)]. The synthesis compounds were characterized by FT-IR, 1H NMR and spectrophotometric methods. Furthermore, silver nanoparticles was prepared by chemical reduction and characterized by X-Ray diffraction (XRD), infra-red spectrum (FTIR), atomic force microscope (AFM) and scanning electron microscope (SEM). The Ag NPs was used as a base nano metal for preparing Schiff bases-Ag NPs derivatives. The pure Ag NPs and Ag NPs functionalized Schiff bases nano compounds were used to check their effectiveness against four different types of bacterial (Staphylococcus aurous, Staphylococcus epidermidis, Escherichia coli and Klebsiella sp.) and one type of fungal (Candida albicans) by a serial dilution method.

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This review involves the effect of digestion methods on the drugs and how to overcome the harms of digestion process by designing the suitable a polymeric drug system that has ability to hold out the harsh conditions of the acid in stomach. And it involves different type of backbone polymer to prepare new drug polymers form, this new polymer drugs included many benefits such as release the minimum amount of drug over an prolonged time by organized delivery of drug and the side effect of drugs will reduced. This process includes the modification of natural polymer such as chitosan, starch, cellulose, gelatin by carried out with a spacer, and grafted the new copolymer with amino drug such as amoxicillin (HA), and characterize it by UV Spectroscopes, (DSC) and (TGA) and physical properties was discussed. And know the ability of drug release in different pH. In this review we concluded that the best way to overcome the side effect of digestion process on the drugs by using the medicine as polymer drugs, and the best polymer used was natural polymers, the prepared polymer drug have thermal stability more than the drug alone, this indicate extra expire date with more safety of drug satiability.