نتایج جستجو برای: polyaniline emeraldine base

تعداد نتایج: 260313  

2016
Aleksandra Janoševic Ležaić Sandra Luginbühl Danica Bajuk-Bogdanović Igor Pašti Reinhard Kissner Boris Rakvin Peter Walde Gordana Ćirić-Marjanović

We report about the first Raman spectroscopy study of a vesicle-assisted enzyme-catalyzed oligomerization reaction. The aniline dimer N-phenyl-1,4-phenylenediamine (= p-aminodiphenylamine, PADPA) was oxidized and oligomerized with Trametes versicolor laccase and dissolved O2 in the presence of sodium bis(2-ethylhexyl)sulfosuccinate (AOT) vesicles (80-100 nm diameter) as templates. The conversio...

2003
Xiangyang Shi Alejandro L. Briseno Raymond J. Sanedrin Feimeng Zhou

Multilayers of poly(diallyldimethylammonium chloride) and poly(sodium 4-styrenesulfonate) precoated onto melamine formaldehyde (MF) particles via the layer-by-layer (LbL) self-assembly procedure were used as templates for the subsequent deposition of polyaniline (PANI). Transmission electron microscopic (TEM) and scanning electron microscopic (SEM) images reveal that the as-prepared PANIcontain...

2015
O. Alexander Bell Guanglu Wu Johannes S. Haataja Felicitas Brömmel Natalie Fey Annela M. Seddon Robert L. Harniman Robert M. Richardson Olli Ikkala Xi Zhang Charl F. J. Faul

A tetra(aniline)-based cationic amphiphile, TANI-NHC(O)C5H10N(CH3)3(+)Br(-) (TANI-PTAB) was synthesized, and its emeraldine base (EB) state was found to self-assemble into nanowires in aqueous solution. The observed self-assembly is described by an isodesmic model, as shown by temperature-dependent UV-vis investigations. Linear dichroism (LD) studies, combined with computational modeling using ...

2013
Ahsan I. Nawroj John P. Swensen Aaron M. Dollar

This paper introduces a technique of inducing bulk conductivity in a polymer. The technique uses coiled copper ‘cells’ embedded into a polymer during fabrication which can subsequently create highly redundant series-parallel networks. The preceding body of work aimed to improve the conductivity of non-conducting polymers by embedding particulates (of metal, carbon, etc.) into the polymer, or by...

2014
Lidija Glavas Karin Odelius Ann-Christine Albertsson

Control over micelle properties is vital in the field of drug delivery, and the ability to modify these properties in order to trigger dissociation is highly desirable. We prepared polymeric micelles with the ability to undergo dissociation over time without the need for external stimulation by incorporating an electroactive and redox responsive segment into amphiphilic copolymers. The incorpor...

2012
Ahmad Abdolahi Esah Hamzah Zaharah Ibrahim Shahrir Hashim

The present paper aims to study the preparation of polyaniline nanofibers through simple interfacial polymerization. Ammonium persulfate, hydrochloric acid and chloroform were used as oxidant, dopant and organic solvent respectively. Field Emission Scanning Electron Microscopy (FESEM), X-ray diffraction and Fourier Transform Infrared Spectroscopy (FTIR) techniques were used to analyze the produ...

2008
Wenrong Yang Jingquan Liu Rongkun Zheng Zongwen Liu Yun Dai Guonan Chen Simon Ringer Filip Braet

In this report, a novel chemical synthesis of polyaniline/gold nanocomposite is explored using ionic liquid (IL) 1-Butyl-3-methylimidazolium hexafluorophosphate. The direct chemical synthesis of polyaniline/gold nanocomposite was initiated via the spontaneous oxidation of aniline by AuCl(4) (-) in IL. A nearly uniform dispersion of polyaniline/Au particles with a diameter of 450 ± 80 nm was pro...

Journal: :Physical chemistry chemical physics : PCCP 2013
Ju-Won Jeon Yuguang Ma Jared F Mike Lin Shao Perla B Balbuena Jodie L Lutkenhaus

Conjugated polymers, such as polyaniline, have been widely explored as sensors, electrodes, and conductive fillers. As an electrode material in electrochemical energy storage systems, polyaniline can be subject to irreversible oxidation that reduces cycle life and electrode capacity, thus, limiting its widespread application. Here we present a simple route to produce and prepare polyaniline-bas...

2007
D. A. FUNGARO A. OLIVEIRA M. LINARDI

−− The electrocatalytic properties of platinum nanoparticles incorporated into polyaniline films was investigated for oxidation of ethanol in sulfuric acid solutions. The electropolymerization of aniline and the electrochemical depositions of platinum particles into the polyaniline film were achieved by cyclic voltammetry. The effect of the formation conditions of platinum-modified polyaniline ...

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