منابع مشابه
Characterization of Polyacetylene and Polyacetylene Doped with Palladium
Samples of Naarmann polyacetylene, denoted as N-(CH)x, (unstretched) and polyacetylene doped with Pd have been investigated, being characterized by: (i) conductivity using the four-point method, (ii) bulk concentration of Pd using the atomic absorption method, (iii) bulk density using helium pycnometry, (iv) surface composition by X-ray photoelectron spectroscopy and (v) electron transport para...
متن کاملCastaing microprobe analysis of doped polyacetylene films
2014 By doping, the electrical behaviour of polyacetylene film was considerably modified leading to the large development of the research in the field of conducting polymers. The aim of this paper is to point out the inhomogeneity of the dopant through the film cross section, in particular with I2 and SbF5. It is also evidenced that errors may be induced by these inhomogeneities in the interpre...
متن کاملOptical properties of potassium-doped polyacetylene
The optical reflectance of polyacetylene doped with high concentrations of potassium has been measured, and the optical properties estimated by Kramers–Kronig analysis. The samples, doped by a vapor-phase technique to y ≈ 0.08 and 0.18, showed strong doping-induced infrared absorption at ∼900, 1270, and 1390 cm−1. These experiments were motivated by calculations of the infrared absorption which...
متن کاملMean-field theory for alkali-metal-doped polyacetylene.
The Landau theory used by Choi and Mele (CM) to treat their rotor model on a triangular lattice for the orientational ordering of polyacetylene chains in alkali-metal-doped polyacetylene is studied. A reanalysis of the higher-order terms in the Landau expansion indicates that cosine ordering can support a nonzero cubic term in the Landau expansion whereas the sine-ordered phase has no such term...
متن کاملGrowth and morphology of undoped and doped polyacetylene thin films
2014 Very thin films were studied by means of transmission electron microscopy. On undoped films, the existence of nascent microfibrils was pointed out. Elsewhere the effects of doping with iodine, SbF5 and MoCl5 were studied. Revue Phys. Appl. 19 (1984) 187-190 MARS 1984 Classification Physics Abstracts 81.20S Tome 19 No 3 MARS 1984
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 2009
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2008.09.002