The Chemistry and Physics of Polythiazyl, (SN)x, and the Polythiazyl Halides

Street, G. B.; Gill, W. D.

doi:10.1007/978-1-4684-3480-4_31

Cited by 7 publications

(4 citation statements)

References 49 publications

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“…13 The electrochemical oxidation of polypyrrole and (CH) 1 is reversible enabling thin films of the polymers to be readily switched between the neutral insulating state and the oxidized conducting state. 1 ' These redox reactions are accompanied by color changes. Although thin films of pyrrole can be reversibly oxidized and reduced in the absence of air, exposure to air results in a blue black film which is no longer electrochemically reducible.…”

Section: Distmentioning

confidence: 99%

Electrical properties of pyrrole and its copolymers

et al. 1981

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Section: Distmentioning

confidence: 99%

Electrical properties of pyrrole and its copolymers

et al. 1981

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“…In the optical transform of the c-re~ion, the diffraction spots are largely streaked, but the 102-reflection still remains comparatively spotty after doping. This suggests that at the first stage of iodination iodine is probably not intercalated between the i'02 planes as in bromination [4], since the spacing of the 102 plane is not affected by iodine atoms.…”

Section: Resultsmentioning

confidence: 92%

“…The (SN)x thus intercalated with halogenes shows that the diffraction spots become more streaked perpendicular to the b-axis and extra streaks appear between the layer lines [8,13]. In (SN Bry)x, two structural models have been given: bromine atoms are intercalated between (SN)x molecules in the crystal lattice [14] or are cladded outside (SN)x fibrils [4]. Iqbal et al estimated that 10 % of the bromine has entered the (SN)x lattice while 90 0/0 is located in the interfibrillar regions [12].…”

Section: Introductionmentioning

confidence: 98%

“…The structure of polymeric sulfur nitride (SN)x has been extensively studied because of its characteristic electrical properties [1][2][3][4]. From X-ray and electron diff action studies, it was found that the large mosaic spread of diffraction spots was probably related to the fibrous nature of (SN)x crystals [5][6] originated in microtwins in the polymerization process [7].…”

Section: Introductionmentioning

confidence: 99%

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High resolution electron microscopy of (SN)x

Kawaguchi

Isoda

Petermannn

et al. 1984

Colloid & Polymer Sci

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Abstract:Pristine and iodinated (SN) x were studied by high resolution electron microscopy. High resolution electron micrographs showing lattice fringes up to 0.22 nm were obtained. In these electron micrographs, the texture of (SN) x crystals was elucidated to be fibrillar or mosaic; the lattice fringes were observed in domains extended along the molecular axis (b-axis) and very narrow in the perpendicular direction. Each crystallite varied from place to place in size but maintained the b-axis orientation. The high resolution image of iodinated (SN)x did not show directly the location of iodine atoms and their presence was deduced only from the optical transform of the image. The optical transform showed that iodine atoms were not intercalated uniformly, but locafized at the skin region on (SN)x fibers, where the crystal lattice was highly distorted. Then the iodination of (SN)x is supposed to result in the destruction of the crystal lattice by invasion of iodine atoms or to take place preferentially at a distorted crystal region.

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Electrical properties of ion‐implanted poly(p‐phenylene sulfide)

Mazurek

Day

Maby

et al. 1983

J. Polym. Sci. Polym. Phys. Ed.

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Ion implantation of impurities into thin films of poly(p‐phenylene sulfide) (PPS) is found to increase the conductivity of the material by up to 12 orders of magnitude. The increase is stable under exposure to ambient conditions, in contrast to the instability of the conductivity increases in PPS produced by chemical doping with AsF5. PPS films 0.1–0.2 μm thick are spin cast from solution onto interdigitated electrodes patterned on an oxidized silicon substrate. The room‐temperature interelectrode resistance is measured as a function of implantation fluence. An estimate of film conductivity is obtained from this resistance with a simple model for the electrode and film geometry. A first experiment yielded similar conductivity increases for implantation of either arsenic or krypton. At a fluence of 1 × 1016cm−;2, which corresponds to an average impurity concentration of 2.5 × 1021cm−3, the conductivity reaches an apparently saturated value of 1.5 × 10−5 (Ω cm)−1. Infrared spectra of the films before and after implantation suggest that crosslinking may be present in the implanted films, and Auger studies show stoichiometric changes throughout the implanted layer. These results suggest that the observed conductivity changes are the result of molecular rearrangements produced by the implantation rather than the result of specific chemical doping. Specific chemical doping may, however, explain the results of a second experiment in which implantation of bromine resulted in substantially larger conductivities found to increase at an approximate linear rate from a value of 1.0 × 10−4 (Ω cm)−1 at a fluence of 1 × 1016 cm−2 to a value of 4.0 × 10−4 (Ω cm)−1 at a fluence of 3.16 × 1016 cm−2.

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The Chemistry and Physics of Polythiazyl, (SN)x, and the Polythiazyl Halides

Cited by 7 publications

References 49 publications

Electrical properties of pyrrole and its copolymers

Electrical properties of pyrrole and its copolymers

High resolution electron microscopy of (SN)x

Electrical properties of ion‐implanted poly(p‐phenylene sulfide)

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