“…This dependence resembles the shape of a titration curve and increases with the irradiation time, correlating to an increase in the PANI protonation state. This feature is comparable to the relationship between the conductivity at room temperature and the protonation state of the emeraldine salt as previously published. , 3 Dependence of the normalized absorption band intensities at 872 nm (Δ A 872 ) on the irradiation time of a EB/PhT film. 4 Ratio of absorption band intensity at 872 nm to that at 610 nm ( A 872 / A 610 ) with different irradiation times for a EB/PhT film.…”
The objective of this study was to adjust work function of polyaniline (PANI) in the solid
state by precisely dosed UV irradiation. For this purpose triphenylsulfonium triflate salt
was used as a photo acid generator. The structure of PANI before and after irradiation was
characterized by UV−vis and FTIR spectroscopy. It has been observed that the appearance
of the 1143-cm-1 band, corresponding to the polaron stretching mode, correlates with the
changes of the Fermi level. This observation indicates that electrons in the proton-doped
PANI are delocalized, leading to a change in the electronic structure of PANI. The changes
result in lowering of the work function of PANI as measured by the field-effect transistor.
Nondecomposed triflate salt can be removed by dipping the irradiated film into methanol to
prevent further UV light sensitivity and further postexposure acid doping.
“…This dependence resembles the shape of a titration curve and increases with the irradiation time, correlating to an increase in the PANI protonation state. This feature is comparable to the relationship between the conductivity at room temperature and the protonation state of the emeraldine salt as previously published. , 3 Dependence of the normalized absorption band intensities at 872 nm (Δ A 872 ) on the irradiation time of a EB/PhT film. 4 Ratio of absorption band intensity at 872 nm to that at 610 nm ( A 872 / A 610 ) with different irradiation times for a EB/PhT film.…”
The objective of this study was to adjust work function of polyaniline (PANI) in the solid
state by precisely dosed UV irradiation. For this purpose triphenylsulfonium triflate salt
was used as a photo acid generator. The structure of PANI before and after irradiation was
characterized by UV−vis and FTIR spectroscopy. It has been observed that the appearance
of the 1143-cm-1 band, corresponding to the polaron stretching mode, correlates with the
changes of the Fermi level. This observation indicates that electrons in the proton-doped
PANI are delocalized, leading to a change in the electronic structure of PANI. The changes
result in lowering of the work function of PANI as measured by the field-effect transistor.
Nondecomposed triflate salt can be removed by dipping the irradiated film into methanol to
prevent further UV light sensitivity and further postexposure acid doping.
“…PANI pays attention to magnetic behavior due to its high rotation density [ 122 ]. These properties of CP have been extensively considered because they provide information on unpaired rotations and carrier types [ 123 ].…”
Polyaniline (PANI) is a famous conductive polymer, and it has received tremendous consideration from researchers in the field of nanotechnology for the improvement of sensors, optoelectronic devices, and photonic devices. PANI is doped easily by different acids and dopants because of its easy synthesis and remarkable environmental stability. This review focuses on different preparation processes of PANI thin film by chemical and physical methods. Several features of PANI thin films, such as their magnetic, redox, and antioxidant, anti-corrosion, and electrical and sensing properties, are discussed in this review. PANI is a highly conductive polymer. Given its unique properties, easy synthesis, low cost, and high environmental stability in various applications such as electronics, drugs, and anti-corrosion materials, it has attracted extensive attention. The most important PANI applications are briefly reviewed at the end of this review.
“…Magnetic Properties. Due to its high spin density, PANI shows good interest in magnetic behavior and has been used in many studies [114]. The paramagnetic nature is closely and directly related to the magnetic and electrical properties of electrically conducting PANI, which is caused by the presence of hydrochloric acid as dopant with PANI as a result of the oxidation process [115].…”
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.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
