Results 211 to 220 of about 14,055 (259)

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
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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

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
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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
Kijewska, Krystyna, Blanchard, Gary J., Szlachetko, Jakub, Stolarski, Jarosław, Kisiel, Anna, Michalska, Agata, Maksymiuk, Krzysztof, Pisarek, Marcin, Majewski, Paweł, Krysiński, Paweł, Mazur, Maciej   +10 more
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Polypyrrole

2009
Abstract Major Applications There are potential applications for PPy in display devices, chemical sensors, electrodes in batteries, drug carriers, heating fabrics, deionizers, and as a catalyst. Properties Of Special Interest Presence of an extended π–bonding system, which imparts electrical properties to the polymer.
Amit S Kulkarni, Shrish Rane, Gregory Beaucage   +2 more
openaire   +1 more source

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

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
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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
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Actuation of polypyrrole nanowires

Nanotechnology, 2008
Nanoscale actuators are essential components of the NEMS (nanoelectromechanical systems) and nanorobots of the future, and are expected to become a major area of development within nanotechnology. This paper demonstrates for the first time that individual polypyrrole (PPy) nanowires with diameters under 100 nm exhibit actuation behavior, and therefore ...
Alexander S, Lee, Serban F, Peteu, James V, Ly, Aristides A G, Requicha, Mark E, Thompson, Chongwu, Zhou   +5 more
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Electromagnetic shielding of polypyrrole–sawdust composites: polypyrrole globules and nanotubes

Cellulose, 2017
Economic and efficient materials for the shielding of electromagnetic interference are required by many applications. Electrically conducting composite materials based on wood sawdust modified by polypyrrole (PPy) with different morphology, globular and nanotubular, were prepared through in-situ polymerization of pyrrole with the use of iron (III ...
Vladimir Babayan, Natalia E. Kazantseva, Robert Moučka, Jaroslav Stejskal   +3 more
openaire   +2 more sources