Showing papers in "Synthetic Metals in 2001"

TL;DR: In this article, the conductivity/temperature relationship of single fibers as small as 419 nm have been obtained, in a given preparation of certain polymers, such as polystyrene and polyethylene oxide.

TL;DR: In this paper, the importance of conducting polymers was discussed and the potential of these materials for utility in a wide variety of applications, including semiconducting and metallic polymers.

TL;DR: In this paper, photoluminescence studies of spun films of polyaniline base (emeraldine oxidation state) showed that films prepared from NMP solution in air having a relative humidity between 43±2 and 57±2% (21°C).

TL;DR: In this paper, single-wall carbon nanotubes encapsulating specified fullerenes (peapods) were synthesized using a sublimation method, and the Raman spectrum was measured to estimate macroscopic yield.

TL;DR: Polyaniline dispersions consisting of 10-20nm sized nanoparticles were prepared by oxidation with ammonium peroxydisulfate (APS) in SDS micellar solutions as discussed by the authors.

TL;DR: In this article, the in situ electrochemical doping process of the poly(3,4-ethylenedioxythiophene) (PEDT) has been studied in an aqueous micellar medium by means of optical spectroscopies.

TL;DR: In this article, it was shown that polycrystalline transistors with a grain size that increases when the temperature of the substrate is increased, and that the carrier mobility of the transistors increases with grain size.

TL;DR: In this article, a 3D dye-sensitized photovoltaic solar cells were fabricated using a three-layer concept, which consist of a transparent inorganic nanocrystalline titanium dioxide (nc-TiO 2 ) layer with a thickness of 2μm as electron acceptor and for electron transport.

TL;DR: In this paper, the dc and ac conductivities of polyaniline and polyvinyl alcohol (PVA) blends have been reported from room temperature to 80 K in the frequency range of 1.8 kHz to 5.5 kHz.

TL;DR: In this article, a model of polyaniline film formation is proposed based on the concept of the primary and secondary nucleation, where Oligoaniline cation radicals adsorbed on the glass surface nucleate the primary growth and the secondary nucleations occur on the produced polyaniniline layer.

TL;DR: In this paper, the role of single wall carbon nanotubes (SWNTs) in a hole conducting buffer polymer, polyethylene dioxythiophene (PEDOT), was investigated.

TL;DR: In order to develop the high quality electromagnetic interference (EMI) shielding textiles for protective clothing, polyester fabrics were electroless copper-plated as discussed by the authors, and the effects of pretreatment conditions such as scouring, etching, and catalyzation on electromagnetic interference shielding effectiveness (EMISE) and physical properties of treated fabrics were investigated.

TL;DR: In this paper, polypyrrole (PPy) films were uniformly electropolymerized over each carbon nanotube of the well-aligned CN arrays and the performance of the PPy films was evaluated by cyclic voltammetry (CV).

TL;DR: The photophysics and device physics of a phosphorescent polymer light emitting diode (LED) have been investigated in this article, where the emissive host, poly(9,9-dioctylfluorene) (PFO), was doped to a variety of concentrations between 0.2 and 8%.

TL;DR: In this article, transport measurements on PMMA-single-walled carbon nanotubes composites films are reported, characterized by Raman spectroscopy, optical absorption and electron microscopy.

TL;DR: In this paper, a high molecular weight, soluble, doped polypyrrole containing no substituent on the pyrrole ring has been synthesized by the incorporation of the novel, versatile di(2-ethylhexyl) sulfosuccinate dopant anion which renders the polymer soluble in polar and also weakly polar or non-polar solvents.

TL;DR: In this paper, the electrochemical polymerization of several ring-substituted anilines, namely of o-toluidine (o-Tol), m-toline (m-Toline), o-anisidine (oAnis), and o-chloroaniline (O-ClAn), was carried out on passivated Fe surfaces.

TL;DR: The properties of polyfluorenes for use in luminescent devices have been improved by a variety of approaches as discussed by the authors, such as using planar indenofluorene units.

TL;DR: In this paper, the authors present current/voltage characteristics, efficiency data and surface morphology studies of large area flexible plastic solar cells with a photoactive layer consisting of poly(2-methoxy-5-(3′,7′-dimethyloctyloxy)-1,4-phenylene vinylene), (P3OT) as donor and fullerene C 60 or a highly soluble methanofullerene, (phenyl-[6,6]-C 61 )-butyric acid methyl ester (PCBM) as electron acceptor.

TL;DR: In this article, it was shown that a network of metallic grains connected by resonance quantum tunneling has a Drude type response for both the high and low frequency regimes and behaves as a dielectric at intermediate frequency in agreement with experimental observations.

TL;DR: In this paper, an easy route for synthesis of polyaniline (PAn) in stable aqueous solution/dispersion form, using poly(vinyl alcohol) (PVA) as an efficient steric stabilizer.

TL;DR: In this article, the degree of crystallinity and surface morphology of poly(3,4-ethylenedioxythiophene) PEDOT, films was tuned by electrochemical synthesis.

TL;DR: In this paper, the authors reported the results of temperature dependence of dc conductivity ( σ dc ( T )), X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR), and XRD experiments for dodecylbenzenesulfonic acid (DBSA) doped polyaniline (PAN)-Na + -montmorillonite (MMT) nanocomposite.

TL;DR: In this article, the authors present their previous work that they had carried out just before the discovery of chemical doping, and they do not directly related to the discovery and development of conducting polymers to which the Nobel Prize in Chemistry in 2000 was awarded.

TL;DR: In this article, the photomagnetic effect of the mixed-valence compound Cu 2 II [Mo IV (CN) 8 ]·7.6H 2 O (Cu II ; 3d 9, S =1/2, Mo IV ; 4d 2, S =0) (1 ) was investigated.

TL;DR: In this article, the authors presented results on photovoltaic devices based on novel thiophene-isothianaphthene copolymers (PDTI) with π-π* band gap ranging from 1.2 eV to 1.8 eV.

TL;DR: In this paper, the effect of different protonic acids used in the electrochemical preparation of polyaniline on the oxidation current of methanol was studied, and the largest oxidation current was obtained for polyanilsines prepared in sulfuric acid solutions.

TL;DR: In this paper, the authors argue that high-dielectric polymers such as polyaniline and polypyrrole have unusually strong temperature dependence due to the low dimensionality of charge transport in the polymers.

TL;DR: In this paper, the authors investigated the electrical transport in organic light-emitting devices (OLEDs) based on tris(8-hydroxyquinolato)aluminium (Alq) as a function of temperature and organic layer thickness, and found that the thickness dependence of the current provided a unique criterion to discriminate between injection limited behavior, trap-charge limited conduction with an exponential trap distribution and a field independent mobility.

TL;DR: In this article, the Ni/Al 2 O 3 catalyst was used to grow carbon nanotubes (CNTs) in C 2 H 2 /H 2 medium at 600°C for 30 min with a gas flow rate of 10/100 sccm.