Showing papers in "Synthetic Metals in 1983"

TL;DR: In this paper, X-ray photoelectron spectroscopy (XPS) was used to characterize the conducting polymer BF4−-doped polypyrrole, and the results revealed that the pyrrole units are preserved in the polymer, the dopant occurs as BF 4− ions, there are four pyr role units per BF 4 − ion, and that electronic charge is extracted uniformly from all pyrrox units by the dopants ion.

TL;DR: In this article, the ideal conductivity of a one dimensional (1-D) carbon based metal has been studied and compared with previous results on graphite intercalation compounds (GICs).

TL;DR: In this article, the deintercalation of layered compounds LiMO 2 (M = Cr, Co) and NaM′O 2 were investigated by using iodine or bromine as oxidizing agents in acetonitrile.

TL;DR: In this paper, a new staging model is proposed, with two 2nd stages, IIa and IIb, characterized by different anion packing densities, for graphite intercalation.

TL;DR: A review of the chemistry of acceptor type intercalants can be found in this paper, where it is shown that redox chemistry might be intrinsic to the formation of so-called acceptor compounds and how the oxidative or coordinating capability of a chemical species relates to its behavior as an intercalant.

TL;DR: In this article, the authors summarized recent experimental results on staging transitions in intercalated graphite and observed transitions to dilute stage 1 at high temperature for LixC6 with 0.16.

TL;DR: In this article, the magnetic phase transitions in a second-stage CoCl 2 -graphite intercalation compound based on a single crystal of Kish graphite have been investigated by elastic neutron scattering, magnetization, magnetic susceptibility, and specific heat measurements.

TL;DR: In this article, an exfoliated graphite was prepared from ternary intercalation compounds and a residue compound by abrupt heating above 600°C, where the degree of exfoliation exceeds 300 times.

TL;DR: In this article, the influence of electrolyte concentration has been studied for the first time in graphite intercalation processes and a practical application of a graphite salt electrode as a positive in a lead/graphite accumulator is investigated.

TL;DR: In this paper, it was shown that the spins of NiCl 2+ ions in the magnetic phase are aligned ferromagnetically within the intercalant layer and the mean size of the islands is about 150 A.

TL;DR: In this article, the a-axis electrical conductivities were 2.0 × 10 5 Ω −1 cm −1 between 9 and 13 wt.% of intercalant for the compounds of pyrolytic graphite, and (8−9) × 10 3 Ω−1 cm−1 in the 7 − 14 wt% range for those of polyacrylonitrile(PAN)-based carbon fiber.

TL;DR: In this paper, an in situ ESR study of the graphite-fluorine system as well as of graphitefluoride acceptor intercalation compounds was performed, with emphasis on the ESR line-shape (A/B ratio) and linewidth, indicating that conduction carriers are scattered by the intercalants due to the spin-orbit mechanism.

TL;DR: In this paper, the inplane unit cell and the twinned domain structure were found by X-ray diffraction to be preserved after exfoliation and collapse of single crystal graphite intercalated with bromine.

TL;DR: In this article, the electrical properties of pitch-based fibers heat treated to 2500, 2750 and 3000 °C and then intercalated are reported. But the electrical resistivity both above and below room temperature, the tensile strength, and Young's modulus are not reported.

TL;DR: In this article, the results obtained for the three metal chlorides are compared and the structure of the second stage CuCl 2 compound is reported, and the results of the third stage Cl 2 compound are compared.

TL;DR: In this paper, the stability of potassium-graphite intercalation compounds (K-GICs) in an oxygen atmosphere was examined at temperatures from 0 to 60 °C.

TL;DR: In this paper, a well-staged, fibrous intercalation compounds with acceptors have been successfully synthesized in highly ordered graphite fibers heat treated to 2900 °C and grown from the thermal decomposition of benzene.

TL;DR: In this article, the structure and morphology of trans-CH x films were established and it was shown that the trans -CH x chains lie parallel to the fibril axes.

TL;DR: The possible synthesis of ternary graphite intercalation compounds by the direct action of over twenty simple organic molecules on KC 8 or KC 24 has been investigated in this article, where the organic molecules were cyclic aromatic or cyclic ethylenic hydrocarbons, epoxidesm quinones, etc.

TL;DR: In this paper, the magnetization, specific heat and electrical transport properties of C6Eu have been investigated in detail, and the existence of a weak, four-spin exchange interaction is essential for these magnetization processes.

TL;DR: In this article, a real-space molecular-orbital description of electronic wave functions which are postulated to be the precursors of the superconducting state in high- and low-dimensional metals is presented, based on self-consistent X-alpha scattered-wave (SCF-Xα-SW) calculations for clusters representing the local molecular environments in these materials.

TL;DR: In this paper, the authors used graphite fibers made from benzene decomposition (heat treatment temperature: 2900 °C) as electrodes in a thermocell of the concentration-type cells developed by Lalancette et al.

TL;DR: In this article, the Grignard reagent of 1-methyl 2,5-dibromopyrrole with Ni(AcAcAc) 2 catalyst was used to synthesize poly(1-methyl2,5 pyrrolylene) with conductivities in the range, 10 −3 −10 −6 ohm −1 cm −1.

TL;DR: In this article, a double-capacitor model was proposed to explain the potential-charge curve of pyrographite intercalation of sulphuric acid and the adjacent graphite planes.

TL;DR: In this paper, the Ginzburg-Landau coherence length perpendicular to the layer planes of the crystals at zero temperature is ten to twenty times larger than the layer repeat distances, showing a three dimensional character.

TL;DR: In this paper, the authors used spectroscopic ellipsometry to determine the complex dielectric function from 1.5 to 6.0 eV of thin films of Prussian Blue and electrochemically grown polypyrrole and poly- N -methyl pyrrole.

TL;DR: In this article, the identity period I c = 12.5 A corresponds to the [Li(THF) 4 ] + intercalates with excess Li + depending on the parent binary, and two narrow 7 Li n.m.r.