Combination of copolymer film (PPy-PPyCOOH) and magnetic nanoparticles as an electroactive and biocompatible platform for electrochemical purposes

Polypyrrole/Helical Carbon Nanotube Composite with Marvelous Photothermoelectric Performance for Longevous and Intelligent Internet of Things Application

“…Thus, it is feasible to apply a 785 nm wavelength laser source to fetch the structure information of the deposited PPy shell. Two Raman bands corresponding to antisymmetrical inter-ring stretching C–N vibration of doped oxidized and neutral states of PPy are found at 1380 and 1325 cm –1 , , respectively. The bands that display at 1080 and 1055 cm –1 are attributed to C–H in-plane deformation with doped oxidized and nonprotonated PPy units, respectively.…”

Effect of hydrostatic pressure on charge carriers in a conducting pyrrole-co-poly(pyrrole-3-carboxylic) copolymer

“…8,10,18,28,30 The spectroscopic study using the excitation line at 785 nm enables the identification of polarons and bipolarons in the oxidized system using the resonance effect phenomenon. 10,27,50…”

“…Raman spectroscopy is a research technique employed in conducting polymers to determine the extent of polymer oxidation and to identify the nature of quasiparticles within the system. 8,10,18,28,30 The spectroscopic study using the excitation line at 785 nm enables the identification of polarons and bipolarons in the oxidized system using the resonance effect phenomenon. 10,27,50 The Raman spectrum of the PPy-co-PPyMCA under ambient pressure and room temperature is shown in Fig.…”

“…[4][5][6][7][8] In addition, copolymer composed of functionalized and non-functionalized pyrrole mers have been developed. [9][10][11][12] Polymers in which functional groups are present at different locations of the pyrrole ring were also studied recently. 13 Investigating polypyrrole-derived materials is crucial due to their potential application in electronic devices such as biological sensors, [14][15][16][17][18][19] supercapacitors, 1,3 gas detectors, 2 or photovoltaic systems.…”

Constructing A/B-Side Heterogeneous Asynchronous Structure with Ag2Se Layers and Bushy-like PPy toward High-Performance Flexible Photo-Thermoelectric Generators

“…It is worth noting that the light at 785 nm is chosen as the laser excitation source because it can resonate with the energy of the delocalized bipolarons and the individual polarons in PPy . The two peaks located at 1382 and 1325 cm –1 are attributed to the inter-ring stretching C–C vibrational modes of PPy and are considered to represent the antisymmetric inter-ring stretching C–N vibrations of the oxidized and neutral states of PPy, respectively, − and two other peaks located at 1080 and 1055 cm –1 are also thought to evaluate the oxidation state of PPy, which correspond to the C–H in-plane bending vibration of the oxidized and reduced PPy states separately. ,, It is obvious from the figure that the relative intensity of the peaks at 1382 and 1080 cm –1 in the Raman spectrum gradually increases and decreases at 1325 and 1055 cm –1 as the flatness of PPy gradually improves, which means that the degree of oxidation and the proportion of bipolarons of PPy gradually rise and thus lead to an improvement in conductivity while having an effect on the absorbance of PPy, and the related discussions will be carried out subsequently …”