In-situ polymerized polyaniline films 6. FTIR spectroscopic study of aniline polymerisation

Trchová, Miroslava; Šeděnková, Ivana; Stejskal, Jaroslav

doi:10.1016/j.synthmet.2005.07.001

Cited by 75 publications

(62 citation statements)

References 16 publications

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“…intensity at higher potentials show these vibrational modes are unequivocally related with the oxidized state of the polymer. In fact, the higher frequency band can be assigned to the C=C stretching vibration of quinoid rings, which is here more intense and shifted to lower wavenumbers than in Fig.3, whereas the 1190 cm -1 feature is attributed to a combination of quinoid C-N-C stretching and C-H in-plane bending [24,30,31]. The assignment of the 1280 cm -1 peak is uncertain but, according to previous literature data, it can be attributed to the persistence of persulfate ions which were employed as the oxidizing agent [32].…”

Section: Chemically Polymerized 2a-4tbpmentioning

confidence: 72%

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The chemical and electrochemical oxidative polymerization of 2-amino-4-tert-butylphenol

Abidi

López-Bernabéu

Huerta

et al. 2016

Electrochimica Acta

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Poly(2-amino-4-tert-butylphenol), poly(2A-4TBP), was synthesized from monomer aqueous solution using either electrochemical or chemical oxidation procedures. Several spectroscopic characterization techniques were employed to gain information on the chemical structure and redox behavior of the obtained materials. It was found that the chemical polymerization product could be described as an oligomer mixture containing up to 16 monomer units. In parallel to other polymers derived from o-aminophenol, phenoxazine rings constitute also the basic structure of poly(2A-4TBP). In addition, the occurrence of N-N couplings, which are favored by the presence of the voluminous tert-butyl substituent, seems also relevant. No significant structural differences were found between the chemically or electrochemically synthesized materials.

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Section: Chemically Polymerized 2a-4tbpmentioning

confidence: 72%

“…The intermediate feature at 532.3 eV can be assigned to quinone/carbonyl compounds [30], while the high energy peak at 533.6 eV is clearly related with the presence of C-O-C in phenoxazine species [26]. It is known that the O 1s main signal tends to be affected by spurious signals coming from extrinsic oxygen-containing species.…”

Section: Methodsmentioning

confidence: 99%

The chemical and electrochemical oxidative polymerization of 2-amino-4-tert-butylphenol

Abidi

López-Bernabéu

Huerta

et al. 2016

Electrochimica Acta

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“…Furthermore, two additional sharp peaks were observed at 1111 and 1293 cm −1 , which were attributed to the aromatic amine. The peaks at 1446 and 1558 cm −1 were attributed to the stretching vibrations of N-B-N and N=Q=N structures, respectively (B and Q represent abbreviations for benzenoid and quinoid moieties in the PANI polymers, respectively) (Trchová et al 2005;Rezaei et al 2011;Yu et al 2012).…”

Section: Electrical Conductivitymentioning

confidence: 99%

Synthesis of Bamboo/Polyaniline Composites by In Situ Polymerization and Their Characteristics

He¹,

Zhang²,

Yu³

et al. 2015

BioResources

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Intrinsically conductive bamboo products were polymerized by the impregnation of an aniline monomer solution into a bamboo substrate and the in situ polymerization of PANI to obtain a semi-conducting material; the bamboo products thus obtained combined characteristics of conductivity of the PANI polymer and the strength of natural bamboo. Light microscopy and scanning electronic microscopy images showed that PANI was uniformly dispersed within the cell lumen and cell wall of the bamboo substrate. The weight percent gain and volume bulk increase of the modified bamboo were 5.18 and 14.9%, respectively. Equilibrium uptake studies showed that the modified bamboo was less hydrophilic, caused by the addition of hydrophobic PANI. The electrical conductivity of the bamboo/PANI composite ranged from 3 × 10 −4 to 1 × 10 −3 S cm −1 , which was tuned by changing the phosphate acid concentration. Fourier transform infrared spectra revealed that PANI was closely polymerized onto the cell wall, allowed by the accessibility of the amine groups of the aniline monomer to the hydroxyl groups of the bamboo matrix. Furthermore, X-ray diffraction analysis indicated that after the in situ polymerization of PANI, the bamboo cellulose maintained a classic cellulose structure, while its degree of crystallinity was decreased.

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“…3. The peaks at 1560 cm -1 (c) and 1470 cm -1 (d) correspond to the C=N stretching vibration of the quinoid ring and the C=C stretching of the benzenoid ring constituting the polymer backbone [10,16,17]. The almost equal vibration/occurrence of these two peaks is indicative that there is formation of the emeraldine form of PAni.…”

Section: Ftir Spectroscopic Properties Of Pani Andmentioning

confidence: 99%

Growth and characteristics of amorphous silica‐modified polyaniline films for ammonia sensor application

Odarve

Vequizo

2015

Phys. Status Solidi C

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The characteristic properties of the nanostructured polyaniline (PAni) films synthesized via chemical oxidative polymerization of aniline on glass substrates using amorphous cristobalite silica (SiO2) as structural growth director are presented in this study. The change in the resistance of the sample was monitored upon exposure to ammonia gas using two‐probe method for two cycles, 40 min each. The structural and morphological property of the PAni/SiO2 samples were studied and compared to PAni samples alone using FTIR spectroscopy and scanning electron microscopy. It was found out that PAni/SiO2 films have higher and uniform response to ammonia with good repeatability during the two cycles and recovery upon removal of ammonia source. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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In-situ polymerized polyaniline films 6. FTIR spectroscopic study of aniline polymerisation

Cited by 75 publications

References 16 publications

The chemical and electrochemical oxidative polymerization of 2-amino-4-tert-butylphenol

The chemical and electrochemical oxidative polymerization of 2-amino-4-tert-butylphenol

Synthesis of Bamboo/Polyaniline Composites by In Situ Polymerization and Their Characteristics

Growth and characteristics of amorphous silica‐modified polyaniline films for ammonia sensor application

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