Showing papers in "Synthetic Metals in 1995"

TL;DR: In this paper, the effects of secondary doping on polyaniline and its derivatives are shown to be based on a change in the molecualar conformation of the polyamide from "compact coil" to "expanded coil" during the secondary doping process.

TL;DR: In this paper, the anti-corrosion performance of polyaniline coated mild steel samples exposed to artificial brine and dilute hydrochloric acid environments was evaluated.

TL;DR: In this paper, a fabric chemical sensor, a process and an apparatus are described for the detection, classification, identification and/or quantification of one or more component chemicals of a chemical vapor via a resistance measurment made across sensor in response to exposure of the sensor to the chemical vapor.

TL;DR: In this article, the role of the counterion and electrolyte cation in polypyrrole (PPy) electroactuation has been investigated and it has been shown that PPy exhibits unusual mechanical responses when subjected to applied electrical potentials.

TL;DR: In this paper, the room-temperature structural, optical and related properties, in the (low frequency) excitonic spectral region, of some single valence metal-halide compounds based on Pb, Sn and Ge are briefly reviewed and some new results are reported.

TL;DR: In this article, a polypyrrole was synthesized by using dodecylbenzene sulfonic acid as the dopant and ammonium persulfate as the oxidant.

TL;DR: In this article, the PANI-(acid)0.5 complex is solvated by at least an additional 0.5 mole of solvating agent per PANI unit (PhN).

TL;DR: In this article, two electroluminescent polymers, poly(2,5-bis(cholestanoxy)-1,4-phenylene vinylene) (BCHA-PPV) and poly(3-octylthiophene) (P3OT), have been characterized on Au and Al substrates in terms of photo-oxidative stability after exposure to UV and visible irradiation from a Hg lamp.

TL;DR: In this article, electric field-induced fluorescence quenching in thin-film light-emitting diode (LED) structures made from blends of poly(phenyl-p -phenylene vinylene) and polycarbonate was investigated.

TL;DR: In this paper, the transport data for polypyrrole-hexafluorophosphate (PPy-PF6), protonated polyaniline and iodine-doped regio-regular polyalkylthiophenes (PATs), all in the insulating regime near the disorder-induced metal-insulator (M-I) boundary, are presented and analyzed.

TL;DR: In this article, an in situ deposition method is presented where combination of solutions of aniline monomer and an oxidizing agent leads to the growth of uniform polyaniline (PAn) conducting thin films on submerged substrates.

TL;DR: In this paper, the reduced viscosity of mixtures of polyaniline (emeraldine base, EB) and d,l-camphorsulfonic acid (HCSA) in solutions of m-cresol or chloroform was investigated.

TL;DR: In this article, the doping characteristics and stability of polyaniline base in the form of solution, powder and film was treated with aqueous solutions of three organic acids, toluenesulfonic acid (TSA), sulfosalicylic acid (SSA) and dodecylbenzenesulfonic acids (DBSA), and HClO4.

TL;DR: In this article, structural aspects of PAN-CSA, PAN-POT and PAN-MSA with m-cresol have been compared and it is shown that the geometry of the polymer chain packing, disorder and the interchain separation have a key influence on the charge conduction process.

TL;DR: In this article, the degree of polymerization decreases as the monomer length increases and this result is accounted for by the corresponding decrease of the coupling rate constant, measured by cyclic voltammetry for the less reactive 3-substituted series.

TL;DR: In this paper, pure polypyrrole (PPy)-polyamide composite films were synthesized electrochemically and the gas-sensing ability was investigated for both pure PPy and PPy-PA films.

TL;DR: In this paper, chemical oxidative polymerization of aniline was studied in an aqueous sodium dodecylsulfate (SDS) micellar system and the polymerization proceeded quickly, resulting in a homogeneous emeraldine-colored dispersion of polyaniline.

TL;DR: The qualitative results of a study of the fabrication of Ca/CN-PPV/ITO polymer light-emitting diodes (LEDs) in ultrahigh vacuum (UHV) are reported in this paper.

TL;DR: In this paper, an application of the intermolecular I···X-(X = CN, halogen atom) interaction is presented, where radical cation salts of iodine-bonded tetrathiafulvalene (TTF) derivatives have been prepared.

TL;DR: In this paper, the electronic properties of actual carbon nanotubes are presented and summerized in the presence of magnetic fiels, using the concepts of crystal orbital and thight-binding approximation.

TL;DR: In this article, the authors investigated reversible changes occurring in the electrochemical reduction of polythiophenes in acetonitrile have been investigated by cyclic voltammetry (CV), UV-Vis and IR spectroscopy.

TL;DR: In this article, the enhancement of electroluminescence (EL) from blends of poly(3-hexylthiophene) (P3HT) in poly(2-methoxy-5-(2′-ethylhexoxy)-1,4-phenylene vinylene) (MEH-PPV) was demonstrated.

TL;DR: In this article, the changes that occurred in the IR spectra of polypyrrole doped with dodecylsulfate were evaluated as it was progressively reduced electrochemically at constant current.

TL;DR: By dispersing a nonconjugated luminescent polymer and an electron-transporting material, 2-(4-biphenylyl)-5-(4tert-butylphenyl)-1,3,4-oxadiazole (PBD), into a hole-transating polymer, poly(9-vinylcarbazole) (PVK), they achieved improved efficiencies for blue light-emitting diodes (LEDs) fabricated with a copolyester (CPE) containing isolated 1,2-dinaphthylene units RE

TL;DR: In this paper, a mixture of head-to-tail poly(3-hexylthiophene) and poly(N-vinylcarbazole) (PVK) was used to produce a light-violet color emission, and the EL quantum efficiency was enhanced by blending, with an optimized value of 0.2% photons/electron in blend films with about 2 wt.% P3HT.

TL;DR: In this article, a mixture of hydrochloric acid-doped polyaniline (PANI·HCl) nanoparticles and poly(vinyl chloride) (PVC) has been prepared by redispersing sedimented colloidal particles of PANI in tetrahydrofuran solutions of PVC using ultrasound and casting the film from the dispersion.

TL;DR: In this article, the influence of the experimental synthesis conditions on the values of the electrical conductivity and on the morphology of polyindole is discussed, as well as the effect of these conditions on polyindoles' properties.

TL;DR: In this paper, the use of singly and doubly functionalised poly(methacrylates) (PMA) for the fabrication of polymeric light-emitting diodes (LEDs) was investigated.

TL;DR: In this article, the porosity of polypyrrole-silica colloidal nanocomposites has been characterized by using transmission electron microscopy (TEEM) measurements.

TL;DR: An alternative approach to synthesize sulfonated polyaniline (SPAN) is described, which results in higher sulfur-to-nitrogen ratio (SN ratio up to about 34 compared to 12 for the original route), and higher yield and other novel properties.