Structural and Electrical Characterization of Protonic Acid Doped Polyaniline

Abstract

Polyaniline doped with different protonic acids were chemically synthesized using ammonium persulfate (APS) as an oxidant. These samples were characterized through X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy, which confirms the amorphous nature and acid doping, respectively. Electrical conduction in these samples has been studied through the measurement of I-V characteristics at room temperature as well as in the temperature range from 313 K to 413 K. So obtained characteristic curves were found to be nonlinear. The conductivity of phosphoric acid doped polyaniline sample is higher as compared to HCl doped polyaniline and pure polyanihne. Temperature dependence of conductivity suggests a semiconducting nature with increase in temperature. Activation energies have been found to be 50.86, 25.74 and 21.05 meV for pure polyanihne (base), polyanihne doped with hydrochloric, phosphoric acid, respectively.

Flexible Thermoelectric Composite Films of Polypyrrole Nanotubes Coated Paper

“…A highest ZT value of~3.4 × 10 −3 (power factor of 0.08 µW·m −1 ·K −2 ) was achieved at 380 K for the PF 6 doping of PPy-NTs. During chemical oxidative polymerization, the anions (e.g., chloride, sulfate, phosphate, oxalate, and acetate ion) of the dopants can be incorporated along a polymer backbone [12,13]. These studies show that PPy-NT has a potential to be used as a TE material.…”

“…Coatings 2017, 7, 211 2 of 6 along a polymer backbone [12,13]. These studies show that PPy-NT has a potential to be used as a TE material.…”

Synthesis of Poly (2,5-dimethoxyaniline) and Electrochromic Properties

“…In comparison with HCl, the response time in H 2 SO 4 was faster. This can be explained by the extent of doping the polymer 50 . Due to the diprotic nature of H 2 SO 4 , the concentration of H + ions in the matrix was higher resulting in increasing extent of doping via a protonation/deprotonation mechanism.…”

The effect of dopant on structural, thermal and morphological properties of DBSA-doped polypyrrole

“…Electrically conducting polymers like polyaniline, polypyrrole and polythiophene are of great interest as a new class of materials in industry during the last two decades, owing to their unique combination of characteristics: electronic, optical, magnetic properties and processing advantage of polymers [1]. Polypyrrole offers tremendous technological potential such as battery electrodes [2], biological sensors [3], corrosion protection [4], microwave shielding [5,6], e-Textiles and artificial muscles [7] and sensors [8].…”