Results 251 to 260 of about 26,114 (304)

Biocompatibility of colloidal polypyrrole

Colloids and Surfaces B: Biointerfaces, 2023
The excellent electroconductive properties of polypyrrole (PPy) predetermine its use as cell-instructive or biosensing biomaterial. PPy has potential for application in a physiological environment, and here the cytotoxicity, antioxidant capacity, modulation of neutrophil oxidative burst, antibacterial activity of colloidal PPy stabilized with ...
Káčerová, Simona, Víchová, Zdenka, Valášková, Kristýna, Vícha, Jan, Münster, Lukáš, Kašpárková, Věra, Vašíček, Ondřej, Humpolíček, Petr   +7 more
openaire   +3 more sources

Super-condensateurs polypyrrole/polypyrrole

Journal de Chimie Physique, 1995
Dans le cadre d'un projet Brite-Euram (Proposition 3286-Contrat BREU 0048), des supercondensateurs ont ete montes en utilisant des electrodes a base de polypyrrole (PPY). Le PPY avait ete synthetise chez SOLVAY, Possedait une capacite electrochimique superieure a 100 Ah.kg -1 et une conductivite dans le domaine 40-50 S.cm -1 .
X Andrieu, L Josset, JF Fauvarque
openaire   +1 more source

Photoactive Nanostructures of Polypyrrole

ChemPhysChem, 2009
AbstractThe creation of nanostructures of the photoactive polymer polypyrrole (PPy) on glass substrates with the spin‐coating method is described. No additional post‐production treatment is necessary to obtain uniformly distributed photoactive nanostructures on macroscopically scaled substrates.
Ruderer, M. A., Hirzinger, M., Müller-Buschbaum, P.   +2 more
openaire   +3 more sources

Properties of Polypyrrole‐Electrolyte‐Polypyrrole Cells

Journal of The Electrochemical Society, 1986
The charging and discharging characteristics of polypyrrole-electrolyte-polypyrrole cells were studied. It was found that secondary batteries could be formed in this way with rather large coulombic efficiencies, but poor charge-retention properties.
A. Mohammadi, O. Inganäs, I. Lundström
openaire   +1 more source

Inverted Emulsion Pathway to Polypyrrole and Polypyrrole Elastomer Composites *

Synthetic Metals, 1994
Abstract A new method is proposed for the preparation of polypyrrole and polypyrrole-elastomer composites. An inverted emulsion of water containing the oxidant (FeCl 3 ) in a solution (toluene, or a mixture of toluene and isooctane) of the host polymer (styrene-butadiene-styrene (SBS) triblock copolymer), or free of the host polymer, was first ...
Eli Ruckenstein, Liang Hong
openaire   +1 more source

Fabrication and electrochemical properties of flow-through polypyrrole and polypyrrole/polypyrrole nanoarrays

Chemical Papers, 2020
Flow-through polypyrrole (PPY) nanoarrays are well tailored into nanopore, nanotube-in-nanopore and nanorod-in-nanopore structures to act as free-standing supercapacitor electrodes through anodization, electro-polymerization deposition and chemical corrosion processes.
openaire   +1 more source

Ion transport in polypyrrole and a polypyrrole/polyanion composite

The Journal of Physical Chemistry, 1993
The ionic conductivities of polypyrrole/poly(styrenesulfonate) (PPY/PSS) and polypyrrole perchlorate (PPY/ClO 4 - ) films on electrodes have been measured in 0.2 M NaClO 4 (aq) as a function of oxidation level by impedance spectroscopy. As the oxidation level is increased, the ionic conductivity of PPY/ClO 4 - increases, while that of PPY/PSS ...
Xiaoming Ren, Peter G. Pickup
openaire   +1 more source

Photopolymerized Polypyrrole Microvessels

Chemistry – A European Journal, 2011
AbstractWe report on the preparation of water‐filled polymer microvessels through the photopolymerization of pyrrole in a water/chloroform emulsion. The resulting structures were characterized by complementary spectroscopic and microscopic techniques, including Raman spectroscopy, XPS, SEM, and TEM. The encapsulation of fluorescent, magnetic, and ionic
Krystyna, Kijewska, Gary J, Blanchard, Jakub, Szlachetko, Jarosław, Stolarski, Anna, Kisiel, Agata, Michalska, Krzysztof, Maksymiuk, Marcin, Pisarek, Paweł, Majewski, Paweł, Krysiński, Maciej, Mazur   +10 more
openaire   +2 more sources

INDIUM/POLYPYRROLE(POLYPYRROLE DERIVATIVES) SCHOTTKY JUNCTIONS

Journal of Macromolecular Science, Part A, 2001
Samples of polypyrrole, poly(N-methyl pyrrole) and their copolymer poly(N-methyl pyrrole-pyrrole) have been prepared by electrochemical polymerization technique. Their conductivity values have been optimized for fabricating indium-polymer Schottky junctions.
Amarjeet Kaur, Ramadhar Singh
openaire   +1 more source

Electrodeposition of polypyrrole-heparin and polypyrrole-hydroxyapatite films

Materials Letters, 2011
Abstract Composite films containing heparin and hydroxyapatite in a polypyrrole (PPY) matrix were electrochemically deposited as monolayers or bi-layers on conductive substrates. The deposition on stainless steel substrates was achieved using a thin prime layer of PPY deposited by anodic electropolymerization in the presence of salicylate anions ...
R. Ma, K.N. Sask, C. Shi, J.L. Brash, I. Zhitomirsky   +4 more
openaire   +1 more source