“…In the recent two decades, conducting polymers have been extensively studied as attractive components of immobilization matrices because of their electrochemical, optical, mechanical and electrical properties. Among the large family of conducting polymers employed for biosensor construction, particularly widespread are polythiophene (Bai et al, 2014), poly(3,4-ethylenedioxythiophene) (Krzyczmonik et al, 2015), polyanlilines (Srinives et al, 2014) and polypyrrole (PPy), one of the most extensively studied conducting polymers (Mosnáčková et al, 2013). Because of the characteristic electron structure with alternating single and double carbon-carbon bonds along the polymeric chains, PPy is characterized by high electrical conductivity, low ionization potential, high electron affinity, but also by tunable physicochemical features, relatively simple preparation and good stability (Ćirić-Marjanović et al, 2013).…”