Preparation and Surface Analysis of PPY/SDBS Films on Aluminum Substrates

Abstract

Polypyrrole films were generated on high purity aluminum substrates under anodic polarization from aqueous electrolytes comprised of pyrrole and sodium dodecylbenzene sulfonate. The methods employed to characterize the polymer films included scanning electron microscopy, Fourier-transform infrared and X-photoelectron spectroscopy and X-ray diffraction. PPY/SDBS films revealed nodular morphology with occasional appearing of "dendrites", high level of protonation, excess of counter-anions ([S]/[N] > [N+]/[N]) and high degrees of disorder

Immobilization of GOD on electrochemically synthesized Ppy–PVS composite film by cross-linking via glutaraldehyde for determination of glucose

“…The vibration bands are observed at 1728 cm À1 (C@O), 1527 cm À1 (N-H bending). These bands correspond to the characteristic bands for Ppy; it shows very good agreement with earlier reported work [32,33]. Thus, the FT-IR spectral results confirm the formation of Ppy.…”

Radiolytic Method as a Novel Approach for the Synthesis of Nanostructured Conducting Polypyrrole

“…36,39,40 In addition, no significant difference exists between spectra b and c. Only small shifts in the vibration mode can be observed. Starting from what is known in the literature about Py, vibration at 3396 cm −1 observed in spectrum a can be attributed to the in-plane stretching of N−H.…”

Adsorption kinetics, equilibrium and radiation effect studies of radioactive cesium by polymer‐based adsorbent

“…Before adsorption, the peaks at 3786 and 3700 cm –1 correspond to –OH due to the physically adsorbed water molecule , and has also been attributed to the cause of formation of pyrrolidinone rings in the polymer chain . The peaks at 2924 and 2855 cm –1 are due to C‐H symmetric and antisymmetric stretching vibration in –CH 3 and –CH 2 aliphatic from the alky chain attached to the benzene ring, respectively, while the peak at 2339 cm –1 has been considered as an artifact . The peak at 1743 cm −1 represents the C‐O group stretching vibrations, the peaks at 1520 and 1441 cm −1 represent the C–C and C–N stretching vibrations of quinoid and benzenoid rings of PPy .…”

“…The doping of sulfonate anion in the polymer chain is evidenced by the peaks at 1273, 1125, and 1000 cm –1 , which have been attributed to the group (O = S=O and S‐O streching vibrations) . Other peaks such as those found at 835 and 720 cm –1 are due to C–H and C–N in–plane deformation and, C–C and C–H out–of–plane deformations in pyrrole units . After Cs adsorption, most of these peaks have been shifted to higher wavenumbers.…”

“…The peak at 1743 cm 21 represents the C-O group stretching vibrations, the peaks at 1520 and 1441 cm 21 represent the C-C and C-N stretching vibrations of quinoid and benzenoid rings of PPy [19]. The doping of sulfonate anion in the polymer chain is evidenced by the peaks at 1273, 1125, and 1000 cm -1 , which have been attributed to the SO 2 3 group (O 5 S5O and S-O streching vibrations) [22,23]. Other peaks such as those found at 835 and 720 cm -1 are due to C-H and C-N in-plane deformation and, C-C and C-H out-of-plane deformations in pyrrole units [23].…”