E.S.R. of BF4−-doped polythiophene

Schärli, M.; Kiess, H.; Harbeke, G.; Berlinger, W.; Blazey, K. W.; Müller, K. A.

doi:10.1016/0379-6779(88)90104-x

Cited by 90 publications

(31 citation statements)

References 22 publications

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“…In order to evaluate their contribution to the overall response of the doped polymer, the relevant EPR spectra have been decomposed by fitting them with different superpositions of these two component lines. Similar two component lines have been observed previously in other thiophene based polymers namely polythiophene [44] and polyalkylthiophenes with methyl [15] and hexyl side groups [45]. Fig.…”

Section: Resultssupporting

confidence: 79%

Quantitative in-situ EPR spectroelectrochemical studies of doping processes in poly(3,4-alkylenedioxythiophene)s

Domagała

Pilawa

Łapkowski

2008

Electrochimica Acta

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Section: Resultssupporting

confidence: 79%

Quantitative in-situ EPR spectroelectrochemical studies of doping processes in poly(3,4-alkylenedioxythiophene)s

Domagała

Pilawa

Łapkowski

2008

Electrochimica Acta

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“…In the semiconductor part of the transition, the conduction is via hopping and there is a decrease in the linewidth with the increase in temperature, evidencing the decrease in resistivity with the increase in temperature. A linear increase behavior has been observed by Schärli et al 19 for highly doped poly͑3-methylthiophene͒ films. They found that the higher the doping level, the lower the temperature at which the increase in the linewidth with temperature starts.…”

Section: Resultsmentioning

confidence: 48%

“…Lorentzian lines have also been found in doped poly͑3-methylthiophene͒ films for similar doping levels. 18,19 For sample 2 the best fittings were for a combination of two Dysonian lines. In fact, the Dysonian lines were written as a combination of absorption and dispersion of Lorentzian lines.…”

Section: Resultsmentioning

confidence: 99%

Simultaneous observation of the magnetic and electric behavior in a correlated system near a metal-semiconductor transition: ESR in pellets of conducting polymers

et al. 2009

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Electron spin resonance ͑ESR͒ experiments show, at the metal-semiconductor transition temperature of a conducting polymer, the distinct contributions of the disordered and crystalline regions. In the more disordered regions of the polymer the polarons experience an antiferromagnetic coupling. As the level of disorder decreases, when small crystalline regions appear, there is a tendency, in some temperature range, for the polarons to interact ferromagnetically. For more ordered regions or crystalline regions of larger sizes, there is a competition between localized ferromagnetic coupled polarons and delocalized ones, that is, between localization and delocalization. The possibility to fit the ESR data for one of the samples using two Dysonian lines, one for each phase, allows one to follow the general behavior of the microwave conductivity as a function of the temperature. The semiconducting behavior of the disordered phase is clearly observed, as well as the true metallic behavior of the crystalline phase revealed by the increase in conductivity with the decrease in temperature.

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“…The theoretical calculations show that the interring torsion angles were evaluated to be about 45 5 . The interring distance was evaluated to be about 1.473 Å .…”

Section: Geometric Parametersmentioning

confidence: 99%

Chemical Synthesis, Electronic Study, and Vibrational Analysis of a New Organic Copolymer Based on PVK and 3-nhexylthiophene

et al. 2010

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Conjugated polymers containing carbazole moieties either in the main or in the side chains have attracted much attention because of their unique electronic properties, to their high photoluminescence quantum efficiency, and thermal stability. The aim of this work is to study a new organic copolymer which combines the PVK properties and those of PHT. We will describe in this study the protocol synthesis, the chemical structure, and the electronic and vibrational properties of the resulting copolymer. The experimental and theoretical studies are combined in order to describe the properties of this material. These properties suggest this compound (PVK-PHT) to be a good candidate for optoelectronic application.

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E.S.R. of BF4−-doped polythiophene

Cited by 90 publications

References 22 publications

Quantitative in-situ EPR spectroelectrochemical studies of doping processes in poly(3,4-alkylenedioxythiophene)s

Quantitative in-situ EPR spectroelectrochemical studies of doping processes in poly(3,4-alkylenedioxythiophene)s

Simultaneous observation of the magnetic and electric behavior in a correlated system near a metal-semiconductor transition: ESR in pellets of conducting polymers

Chemical Synthesis, Electronic Study, and Vibrational Analysis of a New Organic Copolymer Based on PVK and 3-nhexylthiophene

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