Infrared investigations of pristine, doped and partially doped polypyrrole

Spectroscopy of Nanostructured Conducting Polymers

“…FTIR spectra of PPy with different morphologies showed no obvious difference. The characteristic bands of the PPy samples were consistent with those in [127]: the pyrrole ring fundamental vibration at 1544 and 1457 cm À1 , the = C -H in-plane vibration at 1303 and 1040 cm À1 , and the C -N stretching vibration at 1175 cm À1 . The results indicate that the molecular structure of the PPy chain is identical to that of PPy synthesized by a common method.…”

Preparation and electrochemical properties of sulfur-polypyrrole composite cathodes for electric vehicle applications

“…The peaks at 1634, 1550, and 1470 cm -1 indicate the presence of pyrrole, whereas the peaks at 1385 and 1308 cm -1 arise from the N-C vibration and the deformation of pyrrole. The peaks in the 750~930 cm -1 range and at 1043 cm -1 originate from C-H absorption [23,24]. Further, the FTIR peak at 690 cm -1 is attributed to C-S stretching, as reported previously in the literature [23].…”

“…The peaks in the 750~930 cm -1 range and at 1043 cm -1 originate from C-H absorption [23,24]. Further, the FTIR peak at 690 cm -1 is attributed to C-S stretching, as reported previously in the literature [23]. The characteristics of polypyrrole are independent of the synthesis method.…”

Characterization and electrical properties of conductive polymer/colloidal graphite oxide nanocomposites

“…1b) shifted to lower wavenumbers (1170 cm À1 , Fig. 1c) possibly due to the formation of H-bond between the lone electron pair of N atom in pyrrole and C-O group of CGO [20]. It can be found from Fig.…”