A Review on Synthesis of Silica Nanocomposites with Conducting Polymers: Polyaniline

Conducting nanostructures have achieved a prominent position in nanotechnology. Because of larger surface area it can be used in various applications. In recent scenario a class of conducting polymers is becoming popular due to its mechanical and electrical properties. Polyaniline is a conducting polymer which is popularly known as an environmentally stable and highly tunable polymer which can be produced in the form of bulk powder, cast films, or fibers. Polyaniline is of low cost, large-scale production, it is extensively used in vast applications. Polyaniline term corresponding to a class of polymers with up to 1000 repeat units (also known as MER) and was firstly it was known in 1862. Nanocomposite material is a solid phase multi-phase one of which has one, two or three dimensions less than 100 nanometers ( nm) , or structures having repeating distances nanoscale between the different phases within the material. Silica Nanocomposites combined with conducting polymers such as polyaniline are prepared by in situ polymerization and can be used in various applications such as supercapacitors, pseudocapacitors, Layerings and coatings, metal uptake, Chemosensors, Encapsulation of Organic Light Emitting Devices, Proton exchange membrane, pervaporation membrane, biosensors, flexible nanoelectronic devices, drug delivery.