Synthesis and Novel Purification Process of PANI and PANI/AgNPs Composite

Mota, María L.; Carrillo-Castillo, A.; Verdugo, Ana J.; Olivas, A.; Guerrero, Jorge M.; Cruz, Edna C. De la; Ramírez, Natalia Noriega

doi:10.3390/molecules24081621

Cited by 34 publications

(14 citation statements)

References 30 publications

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“…The C=C stretching of aromatic rings for ABA showed the peaks at 1603 and 1587 cm −1 , while PABA showed the peak at 1487 cm −1 . The C=C and C=N stretching of quinoid rings for PABA exhibited the significant peak at 1580 cm −1 , which indicated that the synthesized PABA was composed of amine units [ 41 , 42 ]. The other significant peaks at 1291 and 1059 cm −1 for ABA and 1228 and 1040 cm −1 for PABA corresponded to C–N stretching of the aromatic ring and aliphatic amine, respectively [ 38 , 43 ].…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Dopamine Biosensor Based on Poly(3-aminobenzylamine) Layer-by-Layer Self-Assembled Multilayer Thin Film

2021

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Dopamine (DA) is an important neurotransmitter which indicates the risk of several neurological diseases. The selective determination with low detection limit is necessary for early diagnosis and prevention of neurological diseases associated with abnormal concentration of DA. The purpose of this study is to fabricate a poly(3-aminobenzylamine)/poly(sodium 4-styrenesulfonate) (PABA/PSS) multilayer thin film for use as an electrochemical DA biosensor. The PABA was firstly synthesized using a chemical oxidation method of 3-aminobenzylamine (ABA) monomer with ammonium persulfate (APS) as an oxidant. For electrochemical biosensor, the PABA/PSS thin film was fabricated on fluorine doped tin oxide (FTO)-coated glass substrate using the layer-by-layer (LBL) self-assembly method. The optimized number of bilayers was achieved using SEM and cyclic voltammetry (CV) results. The electroactivity of the optimized LBL thin film toward detection of DA in neutral solution was studied by CV and amperometry. The PABA/PSS thin film showed good sensitivity for DA sensing with sensitivity of 6.922 nA.cm−2.µM−1 and linear range of 0.1–1.0 µM (R2 = 0.9934), with low detection limit of 0.0628 µM, long-term stability and good reproducibility. In addition, the selectivity of the PABA/PSS thin film for detection of DA under the common interferences (i.e., ascorbic acid, uric acid and glucose) was also presented. The prepared PABA/PSS thin film showed the powerful efficiency for future use as DA biosensor in real sample analysis.

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Section: Resultsmentioning

confidence: 99%

Electrochemical Dopamine Biosensor Based on Poly(3-aminobenzylamine) Layer-by-Layer Self-Assembled Multilayer Thin Film

2021

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“…18−20 Conductive polyaniline (PANI) is considered to be one of the most promising conductive polymers due to its lower cost, easy synthesis, reversible redox reaction, and excellent environmental stability. 21 The composite obtained by combining it with inorganic magnetic particles has both the high relative permittivity of polyaniline and the high relative magnetic permeability of magnetic inorganic particles, which makes it an ideal material for the purpose of preparing MAMs. For example, Fe 3 O 4 @PANI nanospheres fabricated by hydrothermal and oxidative polymerization have excellent electromagnetic attenuation properties, which can obtain a reflection loss of −55.5 dB.…”

Section: ■ Introductionmentioning

confidence: 99%

Fabrication and Microwave Absorption Properties of FeSiAl@PANI Composites

Liu,

Sun,

Yan

et al. 2023

ACS Appl. Electron. Mater.

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Composites of ferromagnetic particles and conductive polymers have potential applications in the wave-absorbing stealth technology. In this paper, FeSiAl@polyaniline (FeSiAl@ PANI) composites were prepared through in situ oxidative polymerization. Electromagnetic parameters of the FeSiAl composites were modulated by varying the aniline content. The inhomogeneous interface between amorphous PANI and FeSiAl provides interfacial polarization, charge accumulation, and defects in the PANI layer, which causes dipole polarization and conductive loss, so that multiple loss mechanisms result in the FeSiAl@PANI composites with superior absorbing properties. When 1 g of aniline monomer is added, the lowest reflection loss (RL) can be obtained for the S 1 sample at a thickness of only 1 mm with an RL min value of −37.87 dB. Radar cross-sectional (RCS) simulations using computer simulation technology (CST) for the S 1 sample showed an RCS reduction value of 31.64 dBm 2 . Therefore, the FeSiAl@PANI composite is anticipated to be a candidate material for radar stealth technology and electromagnetic absorption.

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“…The most used hybrid composite (conductive polymer–metal oxide) is PANI with TiO 2 which can photodegrade several pesticides, dyes, and pharmaceuticals under the irradiation of UV or visible light [ 33 , 34 ]. Nevertheless, PANI is synthesized by chemical oxidative polymerization under strongly acidic conditions at sub-zero temperatures [ 35 ]. It is important to consider the degree of oxidation of the nitrogen atoms, and PANI can be classified in three forms: fully reduced, half or fully oxidized [ 36 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Poly(2-vinylpyridine) and Poly(4-vinylpyridine) with Metal Oxide (TiO2, ZnO) Films for the Photocatalytic Degradation of Methyl Orange and Benzoic Acid

et al. 2022

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In this study, composite material films of pyridine-based polymer and metal oxides (ZnO and TiO2) were successfully deposited by spin coating method for environmental remediation. Firstly, the polymers poly(2-vinylpyridine) P(2-VP), and poly(4-vinylpyridine) P(4-VP) were synthesized via solution polymerization. The analysis by grazing incidence X-ray diffraction (GIXRD) reveals semicrystalline nature and scanning electron microscopy (SEM) indicates that the poly(vinylpyridines) clusters of particles were observed on the surface of the films. It was also shown that the morphology of composite materials is completely dependent on the chemical nature of the oxide. In the case of P(2-VP)-TiO2 and P(4-VP)-TiO2, some channels or pathways of TiO2 on the surface of films were observed. However, the surface morphology of the polymer composites formulated with ZnO shows a homogeneous distribution in P(2-VP) and P(4-VP) matrix. The effectiveness of the composite materials in the photodegradation of methyl orange (MO) was evaluated by photocatalysis. According to the results, the P(4-VP)-ZnO composite exhibited the highest photodegradation of MO, allowing the separation of photogenerated species required for the photocatalytic reaction. The P(4-VP)-ZnO composite was also tested in benzoic acid (BA) photodegradation in water. The presence of some scavengers in the reaction system reveals that hydroxyl radicals (OH•), superoxide radicals (O2-•) and holes (h+) are responsible for the BA reduction by photocatalysis.

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Synthesis and Novel Purification Process of PANI and PANI/AgNPs Composite

Cited by 34 publications

References 30 publications

Electrochemical Dopamine Biosensor Based on Poly(3-aminobenzylamine) Layer-by-Layer Self-Assembled Multilayer Thin Film

Electrochemical Dopamine Biosensor Based on Poly(3-aminobenzylamine) Layer-by-Layer Self-Assembled Multilayer Thin Film

Fabrication and Microwave Absorption Properties of FeSiAl@PANI Composites

Synthesis and Characterization of Poly(2-vinylpyridine) and Poly(4-vinylpyridine) with Metal Oxide (TiO2, ZnO) Films for the Photocatalytic Degradation of Methyl Orange and Benzoic Acid

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