نتایج جستجو برای: polypyrrole

تعداد نتایج: 2101  

Journal: :Chemical communications 2002
Jyongsik Jang Joon Hak Oh

A lamellar-structured crystalline polypyrrole (PPy) supramolecular assembly was prepared by surfactant templating, and the regularly linked amorphous PPy nanoparticles with tunable window sizes could play the role of crystalline lattices in the supramolecular assembly.

Journal: :Chemical communications 2012
Yang Liu Zhen Liu Ning Lu Elisabeth Preiss Selcuk Poyraz Moon J Kim Xinyu Zhang

Polypyrrole coated copper nanowires were synthesized in a one-pot manner in the presence of cupric precursor and pyrrole. They displayed ultra-high sensitivity as a potentiometric sensor with considerable environmental stability comparable to noble metals.

Journal: :Chemical communications 2004
Jyongsik Jang Joon Hak Oh

Polypyrrole (PPy) nanotubes with highly uniform surface and tunable wall thickness were fabricated by one-step vapor deposition polymerization (VDP) using anodic aluminium oxide (AAO) template membranes, and transformed into carbon nanotubes through a carbonization process.

Journal: :Analytical chemistry 2002
Hiroyuki Okuno Tonomi Kitano Hidetaka Yakabe Masayoshi Kishimoto Bhavana A Deore Hiroshi Siigi Tsutomu Nagaoka

Overoxidized polypyrrole colloids imprinted with L-lactate were prepared to evaluate the performance of the overoxidation pseudo-template technique developed by the authors. A polypyrrole colloid that had been prepared from a mixture of monomer (pyrrole), dopant (L-lactate), steric stabilizer (poly(vinylpyrrolidone)) and oxidizing agent (peroxodisulfate) was electrochemically overoxidized at +1...

Journal: :The Journal of chemical physics 2008
Yafei Dai Estela Blaisten-Barojas

Polypyrrole is a conjugated polymer prototype of conducting polymers. The energetically preferred spatial conformation of n-pyrrole oligomers (n=1-24) in both the reduced and oxidized phases is obtained and analyzed in this paper within the hybrid density functional theory. Binding energies, gap energies, radius of gyration, end-to-end distance, and vibrational frequencies are reported as funct...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2008
Megan L O'Grady Kevin Kit Parker

The capability to selectively and reversibly control protein-protein interactions in antibody-doped polypyrrole (PPy) was accomplished by changing the voltage applied to the polymer. Polypyrrole was doped with sulfate polyanions and monoclonal anti-human fibronectin antibodies (alphaFN). The ability to toggle the binding and dissociation of fibronectin (FN) to alphaFN-doped polypyrrole was demo...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2005
N Hermsdorf M Stamm S Förster S Cunis S S Funari R Gehrke P Müller-Buschbaum

Self-supported particle-track-etched polycarbonate membranes with nearly perfect cylindrical pores are used for the preparation of similarly perfect cylindrical polypyrrole nanowires and nanotubes. A complete investigation of the structural properties that result at different stages of the preparation route of polypyrrole nanowires and nanotubes is based on a combination of real and reciprocal ...

Journal: :Bulletin of The Chemical Society of Ethiopia 2022

ABSTRACT. This work focused on the extraction of “water hyacinth leaf protein concentrate” (WHLPC) and preparation polypyrrole (PPy), polyaniline (PANI) polypyrrole-polyaniline copolymer (PPy/PANI) coated WHLPC by in situ polymerization investigate their application for removal Cr(VI) from aqueous solution. After optimizing experimental conditions like pH, adsorbent dosage, contact time initial...

Journal: :علوم و تکنولوژی پلیمر 0
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