Showing papers in "Synthetic Metals in 1996"

TL;DR: In this paper, the application of conducting polymers for the direct conversion of electrical energy to mechanical energy in electromechanical actuators is analyzed using theoretical and experimental results, and basic principles of operation, predicted performance advantages and disadvantages, comparisons with natural muscle, evaluations of initial device demonstrations, and methods for improving device performance are provided.

TL;DR: In this article, a conducting polymer, emeraldine, which can be applied chemically on the surface of the stainless steel, is used to prevent corrosion of stainless steel from 0.1 V versus SCE and a current of about 100 μA/ cm2.

TL;DR: In this article, steady-state and transient optical characterization of phenylenevinylene polymers and extract a picture of the photoexcitations and dynamics which may apply more generally to non-degenerate ground-state conjugated polymers.

TL;DR: In this paper, the properties of light-emitting diodes based on poly(2-methoxy,5-(2′-ethylhexyloxy)-1,4-phenylenevinylene) (MEH-PPV) with indium-tin oxide (ITO) anodes are compared with those in which a layer of polyaniline (PAni) is coated between the ITO and the emissive polymer.

TL;DR: In this article, a conjugated poly(2,5-dihexadecanoxy phenylene vinylene pyridyl vinylene) (PPV-PPy V) was used for multilayer light-emitting diode (LED) devices.

TL;DR: In this paper, new organic oligomers and polymers based on the carbazole molecule are explored for possible applications in light-emitting devices, including poly(N-butyl-3,6-carbazolylene) polymer for hole-transporting and lightemitting layer in multilayer light emitting diodes.

TL;DR: In this article, fluorescence spectra, quantum yields Φ F, decay curves, and fluorescence anisotropies of oligothiophenes and oligophenylenevinylenes with varying chain lengths are determined in the dissolved state, in nano-aggregates and in ultrathin films.

TL;DR: In this article, the combination of Fe 2 (SO 4 ) 3 as an oxidant and anionic surfactants, such as sodium dodecylbenzenesulfonate, sodium alkylnaphthalene sulfonate and Sodium alkylsulfonates, brought about enhanced conductivity as well as increased yield of the resultant polypyrrole.

TL;DR: In this paper, the effect of photoprocessing of conjugated polymers in light-emitting diodes (LEDs) using photolithographic processing is investigated.

TL;DR: In this article, a series of oligo (p-phenylene vinylenes) are investigated in solution, nanoaggregates and vapour-deposited or cast ultrathin films.

TL;DR: The hole-injection potential barrier between PPy and MEH-PPV, as determined by Fowler-Nordheim analysis, is≈ 0.23 eV.

TL;DR: In this paper, aniline polyaniline was obtained by carrying out the polymerization at low temperatures, typically between −25 and −30 °C, using an inert solute (lithium chloride is the preferred choice) to keep the aqueous reaction medium mobile.

TL;DR: In this paper, the effect of pH, temperature, monomer/oxidant molar ratio, catalysts and ionic strength on the reaction yield and electrical conductivity of chemically synthesized poly (o-methoxyaniline) was studied.

TL;DR: The morphology of polymer composite films of poly[2-methoxy,5-(2′-ethylhexyloxy)-1,4-phenylene-vinylene] (MEH-PPV) and buckminsterfullerene (C 60 ) has been systematically studied over a wide range of concentrations (10 −81 wt.% of C 60 ) using transmission electron microscopy (TEM).

TL;DR: In this paper, the advantages for the PPV film formation as well as the limitations are reported with respect to the fabrication of light-emitting diode (LED) cells.

TL;DR: In this paper, a network-like structure of polypyrrole embedded in the insulating polymer matrix was investigated by low-voltage scanning electron microscopy (LVSEM) and potential contrast measurements as a function of the acceleration voltage were used to prove the perfection of the PPy network structure.

TL;DR: In this paper, the influence of residual water retained in the emeraldine base form of polyaniline (PANI-EB) on its electrical properties (dielectric losses, complex electric modulus and impedance) is studied in the frequency range 10-105 Hz.

TL;DR: In this paper, it was shown that the anomalous and nonharmonic amide modes in these peptide chains are the result of nonlinear coupling between modes and are the signature of the vibrational polaron.

TL;DR: In this article, an overview of the early stages of interface formation with metals on the surfaces of conjugated polymers and model molecular solids, especially in connection with polymer-based light-emitting diode (LED) devices, was presented at the symposium for Alan Heeger.

TL;DR: In this article, carbon deposition on a catalyst surface during decomposition of different carbon-containing compounds can be used for the synthesis of carbon nanotubes of graphitic structure, and different supported transition metal oxides were found to be active in the production of these materials.

TL;DR: A composite of polyaniline (PANI) containing iron oxides with nanometer size was synthesized by a chemical method as mentioned in this paper, and the structure, electrical and magnetic properties of the resulting PANI-FexOy composites depend on the pH value of the reaction medium and temperature.

TL;DR: In this paper, photoluminescence studies of poly(3-dodecylthiophene) (P3DT) in solution were conducted and the results indicated a large increase in the natural radiative lifetime from approximately 1 ns in good solvent to 20 ns in a poor solvent, which implies an emitting state that is different in the two situations.

TL;DR: In this article, photophysics and light-emitting device applications of poly(pyridine) and poly( p -pyridyl vinylene)-based polymers are presented.

TL;DR: In this article, the authors reported photocurrent and photoluminescence measurements on blends of the organometallic polymer Pt-poly-yne and C 60, and showed that triplet excitons with a binding energy of at least 0.8 eV are created after photoexcitation of Pt-Poly-Yen.

TL;DR: In this paper, the authors demonstrate the use of chemical vapour deposition polymerization as an effective method to fabricate conjugated polymer films as constituents in organic electroluminescence (EL) devices.

TL;DR: In this article, a trap-limited charge transport mechanism is proposed for conjugated polymers, which allows a distinct control of mobility and conductivity, and can be used to fabricate organic thin-film transistors with high mobility and low conductivity.

TL;DR: In this article, the photovoltaic effect in heterojunction structures consisting of a layer of C60 thermally evaporated onto a film of the conjugated polymer poly(p-phenylenevinylene) sandwiched between electrodes of indium-tin oxide and Al.

TL;DR: The transient behavior of electroluminescence (EL) from single and double-layer light-emitting diodes (LEDs) has been measured upon application of a pulse voltage as discussed by the authors.

TL;DR: In this article, the photoluminescence quantum yield of conjugated polymers and oligomers is investigated in light-emitting devices (LEDs), and the authors demonstrate that the emission colour of these devices can be controlled by the driving electric field.