A5020611982- Conducting polymers and applications
- Advanced Sensor and Energy Harvesting Materials
- Electrochemical sensors and biosensors
- Analytical Chemistry and Sensors
- Supercapacitor Materials and Fabrication
- Electrochemical Analysis and Applications
- Aerogels and thermal insulation
- Adsorption and biosorption for pollutant removal
- Electrospun Nanofibers in Biomedical Applications
- Hydrogels: synthesis, properties, applications
- Organic Electronics and Photovoltaics
- Covalent Organic Framework Applications
- Advanced Battery Materials and Technologies
- Advanced Cellulose Research Studies
- Polymer Surface Interaction Studies
- Graphene and Nanomaterials Applications
- Fuel Cells and Related Materials
- Vibration Control and Rheological Fluids
- Metal-Organic Frameworks: Synthesis and Applications
- Polydiacetylene-based materials and applications
- Advanced Thermoelectric Materials and Devices
- Dielectric materials and actuators
- Advanced Chemical Sensor Technologies
- Graphene research and applications
- Solar-Powered Water Purification Methods
Czech Academy of Sciences
2012-2025
Institute of Macromolecular Chemistry
2025
Czech Academy of Sciences, Institute of Macromolecular Chemistry
2015-2024
Åbo Akademi University
2013-2015
Polypyrrole nanotubes exhibit conductivity of tens S cm<sup>−1</sup> which is one the highest among current conducting polymers.
Conducting polymers (CP), namely polyaniline (PANI) and polypyrrole (PPy), are promising materials applicable for the use as biointerfaces they intrinsically combine electronic ionic conductivity. Although a number of works have employed PANI or PPy in preparation copolymers, composites, blends with other polymers, there is no systematic study dealing comparison their fundamental biological properties. The present study, therefore, compares biocompatibility terms cytotoxicity (using NIH/3T3...
This article presents a contribution to better understanding of the processes which take place during synthesis polypyrrole nanotubes using structure-guiding agent, methyl orange. Polypyrrole was prepared by oxidation pyrrole monomer with iron(III) chloride. In presence orange, formation observed instead globular morphology. Two reaction schemes reversed additions oxidant and have been tested they show remarkable influence on produced Nanotubes circular or rectangular profiles diameters from...
In this work, flexible and free-standing composite films of nanofibrillated cellulose/polypyrrole (NFC/PPy) NFC/PPy-silver nanoparticles (NFC/PPy-Ag) have been synthesized for the first time via in situ one-step chemical polymerization applied potential biomedical applications. Incorporation NFC into PPy significantly improved its film formation ability resulting materials with good mechanical electrical properties. It is shown that NFC/PPy-Ag strong inhibition effect against growth...
The preparation of highly conducting polymer nanostructures with defined and uniform nanoscale morphologies represents a research challenge.
The present contribution reports the single-step preparation of new type soft macroporous conducting cryogels, a special hydrogels. Polyaniline/poly(vinyl alcohol) cryogel was prepared by oxidation aniline hydrochloride in frozen reaction mixtures, ice, containing supporting polymer, poly(vinyl alcohol). used for illustration contained polyaniline, and 93 wt % aqueous phase. It macroscopically homogeneous it had structure with average pore size ≈100 μm. polyaniline phase fibrillary....
Abstract Polyaniline cryogel is a new unique form of polyaniline combining intrinsic electrical conductivity and the material properties hydrogels. It prepared by polymerization aniline in frozen poly(vinyl alcohol) solutions. The biocompatibility macroporous was demonstrated testing its cytotoxicity on mouse embryonic fibroblasts via test embryotoxicity based formation beating foci within spontaneous differentiating stem cells. Good related to low contents low-molecular-weight impurities...
Composites of polyaniline (PANI) and Zr-based metal-organic frameworks (MOFs), UiO-66 UiO-66-NH
Polypyrrole nanotubes were prepared by the oxidation of pyrrole with iron(III) chloride in presence methyl orange. They subsequently used for reduction silver ions to nanoparticles. The nanotubular form polypyrrole is compared classical globular morphology its ability reduce ions. Both salts and bases experiments. content metallic resulting composite, determined thermogravimetric analysis, was 21–31 wt%. Elemental composition also discussed on basis energy-dispersive X-ray spectroscopy....
Polypyrrole (PPy) in globular form and as nanotubes were prepared by the oxidation of pyrrole with iron(III) chloride absence presence methyl orange, respectively. They subsequently converted to nitrogen-containing carbons at 650 °C an inert atmosphere. The course carbonization was followed thermogravimetric analysis accompanying changes molecular structure Fourier Transform Infrared Raman spectroscopies. Both original carbonized materials have been tested sensing polar non-polar organic...
Lines were drawn on polyaniline (PANI) salt films with laser beam, and then the samples left to age in air at room temperature. Both irradiated intact parts of sample their ageing studied Raman spectroscopy. It was found that laser-written record is reasonably stable. The degradation by irradiation compared changes PANI during heating. In all cases, deprotonation crosslinking chains proceed but relative rates processes vary conditions.
Abstract With the advancement of applications in biomedicines and bioelectronics, conducting polymers have attained huge significant attention. For such applications, poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is considered a potential polymer because its low cost, considerable stability, high conductivity mechanical strength. Most importantly, easy aqueous solution processability makes it more attractive. Over last few years, PEDOT:PSS has been predominantly...
Tungsten carbide (WC) was used as an additive to prepare polypyrrole (PPy) composites due its high electronic conductivity and chemical stability, well photo- electrocatalytic activities. Herein, conducting PPy/WC were prepared via a single-step approach in the absence or presence of safranin morphology guiding agent. The influence WC content addition on electrical conductivity, morphology, electrochemical properties investigated. PPy have globular while forms 1D nanostructures. In all...
Abstract The reaction between two non‐conducting chemicals, aniline and silver nitrate, yields a composite of conducting components, polyaniline metallic silver. Such polymer composites combine the electrical properties metals materials polymers. In present study, was oxidized with nitrate in solutions acetic acid; this context, oligomers are often major component oxidation products. An insoluble precipitate acetate is also samples. optimization conditions respect to acid concentrations...
The reaction between two nonconducting compounds, aniline and silver nitrate, yields a composite of conducting products, PANI silver. While the oxidation with nitrate is slow takes over several months, addition small amount p-phenylenediamine, 1 mol % relative to aniline, shortens time few hours and, higher concentrations even tens minutes. Nonconducting oligomers, however, are also present in products as rule. chemistry individual pathways discussed. Higher p-phenylenediamine mixture give...