Journal ArticleDOI
Conducting polypyrrole nanotubes: a review
TLDR
The role of the templates in the formation of polypyrrole nanotubes is analyzed and various models are discussed in this paper, where the role of methyl-orange dye in guiding one-dimensional morphology is discussed.Abstract:
Polypyrrole nanotubes rank among the most conducting polymer materials. The role of the templates in the formation of nanotubes is analysed and various models are discussed. Special attention has been paid to the role of methyl-orange dye in guiding one-dimensional morphology. The tuning of reaction conditions by varying temperature, acidity, or the introduction of additives, such as dyes, affects both the morphology and conductivity of polypyrrole. The increase in conductivity need not always be associated with nanotubular morphology. In addition to conductivity, also other physical properties are reviewed with the special attention paid to the characterization by UV–visible, infrared, and Raman spectroscopies. The chemical properties are demonstrated by the ability of polypyrrole to reduce noble-metal compounds, and by salt–base transition associated with the conductivity decrease. Polypyrrole nanotubes maintain the most of conductivity under physiological conditions, and they are still conducting under alkaline conditions in the contrast to globular polypyrrole. Polypyrrole nanotubes convert to nitrogen-containing carbon nanotubes at elevated temperature, thus producing useful carbonaceous materials. To improve the processing, the nanotubes have been used in composites, colloids, or hydrogels. The applications of polypyrrole nanotubes extend to adsorbents, actuators, antioxidants, biomedicine, catalysts and electrocatalysts, electrorheological suspensions, electromagnetic interference shielding, and sensors, especially to those exploiting electrical conductivity and electrochemical activity, such as electrodes in batteries and supercapacitors.read more
Citations
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Interaction of conducting polymers, polyaniline and polypyrrole, with organic dyes: polymer morphology control, dye adsorption and photocatalytic decomposition
TL;DR: In this paper, a review of the interaction between conducting polymers and organic dyes can be found, where the authors consider three fundamental directions that have been so far treated separately: conductivity enhancement, morphology control, and photocatalytic decomposition.
Journal ArticleDOI
Polypyrrole@metal-organic framework (UIO-66)@cotton fabric electrodes for flexible supercapacitors
TL;DR: In this article, a fabric electrode for flexible supercapacitors was successfully fabricated by depositing polypyrrole (PPy) nanotubes and Zr-based MOF (UiO-66) particles on cotton fabrics.
Journal ArticleDOI
Resonance Raman Spectroscopy of Conducting Polypyrrole Nanotubes: Disordered Surface versus Ordered Body
TL;DR: The correlation between conductivity, surface areas, and the proportions of ordered and disordered polypyrrole phases at the surface and in the interior of nanostructures is proposed and established using resonance Raman spectroscopy.
Journal ArticleDOI
Electroconductive multi-functional polypyrrole composites for biomedical applications
Ehsan Nazarzadeh Zare,Tarun Agarwal,Atefeh Zarepour,Filippo Pinelli,Ali Zarrabi,Filippo Rossi,Milad Ashrafizadeh,Aziz Maleki,Mohammad-Ali Shahbazi,Tapas K. Maiti,Rajender S. Varma,Franklin R. Tay,Michael R. Hamblin,Virgilio Mattoli,Pooyan Makvandi +14 more
TL;DR: Polypyrrole is an example of inherently electrically conductive polymer that is employed in the biomedical arena because of its low cost, excellent electroconductive properties, and good biocompatibility as mentioned in this paper.
Journal ArticleDOI
Cationic dyes as morphology-guiding agents for one-dimensional polypyrrole with improved conductivity
Islam M. Minisy,Islam M. Minisy,Patrycja Bober,Udit Acharya,Udit Acharya,Miroslava Trchová,Jiřina Hromádková,Jiří Pfleger,Jaroslav Stejskal +8 more
TL;DR: In this article, a series of syntheses at varying oxidant-to-pyrrole mole ratios confirmed the stoichiometric ratio 2.5 to be the best for pyrrole oxidation.
References
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Journal ArticleDOI
Perspectives on Carbon Nanotubes and Graphene Raman Spectroscopy
TL;DR: Raman spectroscopy is shown to provide a powerful tool to differentiate between two different sp(2) carbon nanostructures (carbon nanotubes and graphene) which have many properties in common and others that differ.
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J-aggregates: from serendipitous discovery to supramolecular engineering of functional dye materials.
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POLYANILINE. PREPARATION OF A CONDUCTING POLYMER (IUPAC Technical Report)
TL;DR: In this article, aniline hydrochloride was oxidized with ammonium peroxydisulfate in aqueous medium at ambient temperature and the electrical conductivity of polyaniline was measured at room temperature.
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Low-Cost High-Performance Solid-State Asymmetric Supercapacitors Based on MnO2 Nanowires and Fe2O3 Nanotubes
Peihua Yang,Yong Ding,Ziyin Lin,Zhongwei Chen,Yuzhi Li,Pengfei Qiang,Masood Ebrahimi,Wenjie Mai,Wenjie Mai,Ching-Ping Wong,Zhong Lin Wang,Zhong Lin Wang +11 more
TL;DR: A low-cost high-performance solid-state flexible asymmetric supercapacitor with α-MnO2 nanowires and amorphous Fe2O3 nanotubes grown on flexible carbon fabric is first designed and fabricated.
Journal ArticleDOI
Polyaniline nanofibers: a unique polymer nanostructure for versatile applications.
TL;DR: It is demonstrated that high-quality nanofibers can be readily produced in bulk quantity using the conventional chemical oxidative polymerization of aniline, and a range of new useful functionalities are developed.