Fourier transform infrared spectroscopy study of conducting polymer polypyrrole: higher order structure of electrochemically-synthesized film

Kato, Hitoshi; Nishikawa, Osamu; Matsui, Tomoko; Honma, Seishi; Kokado, Hiroshi

doi:10.1021/j100168a055

Cited by 73 publications

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“…Also, the ring stretching bond at 1540 cm −1 , conjugated C-N stretching at 1170 cm −1 , C-H stretching vibration at 963 cm −1 , and C-H deformation at 904 cm −1 , proved the presence of PPy in the electrospun nanofibers ( Figure 3E). These peaks positions are well-matched with the reported peaks for PPy [27]. Furthermore, the peaks around 500 to 1000 cm −1 could be assigned to the stretching vibration of Ti-O and Ti-O-Ti in the separately calcinated titania nanofibers ( Figure 3A).…”

Section: Characterization Of Polyamide/polypyrrole/titania Nanofiberssupporting

confidence: 84%

Toward higher extraction and enrichment factors via a double‐reservoirs microfluidic device as a micro‐extractive platform

Rezvani

Baraazandeh

Bagheri

2019

J of Separation Science

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In this study, firstly, a double‐reservoir and switchable prototype of a micro‐chip along with the respective holders were fabricated. A cyclic desorption process using microliter volume of organic solvent was adopted to prevent any outdoor contamination. As extractive phases, two identical sheets of electrospun polyamide/polypyrrole/titania nanofibers were synthesized using core–shell electro‐spinning technique and utilized for determination of memantine in plasma samples. Field emission scanning electron microscopy images showed a high degree of porosity and homogeneity throughout the sheet structure. Also, energy dispersive X‐ray analysis confirmed the presence of titania, while the recorded Fourier transform infrared spectra proved the chemical structures of the polymeric mats. The incorporation of titania as well as polypyrrole in the composition of polyamide nanofibers improved both mechanical stability and extraction capacity of the extractive phase and therefore facilitated the extraction/desorption process. The limits of detection and quantification were 0.01 and 0.04 ng/mL, respectively. In addition, the interday and intraday precisions were lower than 6.7% (n = 3). The linearity was in the range of 0.14–75.00 ng/mL, while recoveries were between 94.1 and 98.4% with the regression coefficient of 0.9987.

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Section: Characterization Of Polyamide/polypyrrole/titania Nanofiberssupporting

confidence: 84%

Toward higher extraction and enrichment factors via a double‐reservoirs microfluidic device as a micro‐extractive platform

Rezvani

Baraazandeh

Bagheri

2019

J of Separation Science

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“…In the spectrum of BC–PPy–ZnO, the peaks at 3390 cm −1 ; the three peaks at 1502, 1507, and 1529 cm −1 ; and the peak at 1281 cm −1 were attributed the NH stretching vibrations, the vibrations of the PPy ring, and the aromatic CH stretching vibrations, respectively . The CN and CN bonds were represented by peaks at 1669 and 789 cm −1 , and the CC and CH bonds were represented by peaks at 678 cm −1 . The peak shift of the PPy–ZnO nanocomposite, which indicated the ZnO nanoparticles was diffused to the PPy ring …”

Section: Resultsmentioning

confidence: 99%

Smart films based on bacterial cellulose nanofibers modified by conductive polypyrrole and zinc oxide nanoparticles

Pirsa

Shamusi

Kia

2018

J of Applied Polymer Sci

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In this study, we synthesized novel films based on bacterial cellulose (BC), BC modified by polypyrrole (PPy), and a PPy–zinc oxide nanocomposite (BC–PPy–ZnO). The soft polymerization method at room temperature was used to obtain the BC–PPy and BC–PPy–ZnO films. The Combined D‐Optimal design was used to study the effects of the pyrrole monomer concentration, ZnO concentration, and polymerization time on the morphological, physical, color, and electrical conductivity properties of the films. Fourier transform infrared results reflected that some new interactions occurred between BC and PPy and PPy–ZnO. The X‐ray diffraction analysis showed that the crystalline behavior of the BC fiber was hindered because of the complete coating with the amorphous PPy particles. Scanning electron microscopy results show that the ZnO, PPy, and PPy–ZnO nanoparticles were placed between the BC fibers. PPy decreased the water vapor permittivity and total soluble matter percentage. Electrical conductivity studies of the synthesized BC–PPy–ZnO film showed that the film's electrical resistance was changed in different oxidation–reduction or volatile compounds media, so the results suggest that the BC–PPy–ZnO films could be used in antioxidative food active packaging and smart packaging. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46617.

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“…A broad peak at $3430 cm 56,57 or N-heterocycles like pyrroles. 58 Bones et al (2010) also suggested that a protonated Schiff bases may play a role in the visible light absorption, 26 as they can be highly absorbing when only moderately conjugated. 59 Given the nature of reaction, the presence of pyrroles may be equally likely (discussed in more detail …”

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confidence: 99%

Brown carbon formation from ketoaldehydes of biogenic monoterpenes

et al. 2013

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Fourier transform infrared spectroscopy study of conducting polymer polypyrrole: higher order structure of electrochemically-synthesized film

Cited by 73 publications

References 0 publications

Toward higher extraction and enrichment factors via a double‐reservoirs microfluidic device as a micro‐extractive platform

Toward higher extraction and enrichment factors via a double‐reservoirs microfluidic device as a micro‐extractive platform

Smart films based on bacterial cellulose nanofibers modified by conductive polypyrrole and zinc oxide nanoparticles

Brown carbon formation from ketoaldehydes of biogenic monoterpenes

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