A combined ellipsometric and in situ infrared (SNIFTIRS) study of poly(benzo-[c]-thiophene) films

Christensen, Paul; Kerr, J.; Higgins, Simon J.; Hamnett, A.

doi:10.1039/dc9898800261

Cited by 27 publications

(17 citation statements)

References 2 publications

(1 reference statement)

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“…5), also assuming that the doping involves one electron per four monomer units and correlated to N Max (details above); $52% and $77% for the inner and outer layer, respectively, were obtained. The low value computed for the inner layer is comparable to that determined for polythionine [18] and poly(benzo-[c]-thiophene) films [51].…”

Section: Also Insupporting

confidence: 70%

An ellipsometric study of poly(3,4-ethylenedioxythiophene) electrosynthesis – from the initial stages to thick layers formation

Abrantes

Correia

Melato

2010

Journal of Electroanalytical Chemistry

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Section: Also Insupporting

confidence: 70%

An ellipsometric study of poly(3,4-ethylenedioxythiophene) electrosynthesis – from the initial stages to thick layers formation

Abrantes

Correia

Melato

2010

Journal of Electroanalytical Chemistry

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“…Recent studies using in situ ellipsometry (23,24) and infrared spectroscopy (25) suggest that a cycled PB film consists of a thick inner portion of"soluble" PB and a thin outer layer of "insoluble PB." We have proposed that PB is a poor conductor, below the threshold voltage, because the conduction electrons are in narrow bands that are fully occupied.…”

Section: Discussionmentioning

confidence: 99%

On the Electronic Conduction in Dry Thin Films of Prussian Blue, Prussian Yellow, and Everitt's Salt

Xidis

Neff

1991

J. Electrochem. Soc.

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Electron conductivities are reported for dry thin films of Prussian blue and its completely oxidized and reduced forms, Prussian yellow and Everitt's salt. It has been discovered that desiccated Prussian blue films are non-ohmic in the sense that significant electron conduction does not occur below a threshold voltage of ca. -+ 0.5 V. Prussian yellow and Everitt's salt are ohmic and do not have a conduction threshold. The conductivities, as determined from the slopes of the i-V curves, are essentially the same for Prussian yellow, Everitt's salt, and Prussian blue above the voltage threshold, and are ca. 5 x 10 -7 (~ cm) -1. The solid state voltammogram of a wet film is also considered in terms of the persistence of the threshold and the onset of electrochemistry. We propose a qualitative explanation for the threshold voltage based on the assumption that the "valence band" (ferric ferrocyanide) is completely occupied and that the applied voltage injects electrons into the "conduction band" (ferrous ferricyanide). ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 132.174.254.159 Downloaded on 2015-05-26 to IP ABSTRACTThe stationary polarization of small, differential conversion, molten carbonate fuel cells (3 cm 2) was measured between 600 and 700~ under various gas compositions. Multiple linear regression was used to correlate the experimental data and to infer the rate-limiting processes in fuel cell electrodes. The analysis indicates that both the anode and the cathode are primarily under mixed control at 700~ at low partial pressures of CO2. The anode does not exhibit charge-transfer control under normal operating conditions, due to its very fast kinetics. The superoxide mechanism appears to be the dominant reaction in a fuel cell cathode.

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“…An example of such a conjugated polymer with a narrow band gap (∼1 eV) is poly(isothianaphthene) (PITN), which has attracted growing attention since Wudl et al in 19841 established the possibility of using isothianaphthene as a precursor for a new type of polythiophene. Several pathways toward PITN, based on the electrochemical polymerization of isothianaphthene, have been described 1–6. In the last decade, there has also been extensive work on the development of a straightforward chemical polymerization route toward PITN, in which various isothianaphthene derivatives are utilized 7–11.…”

Section: Introductionmentioning

confidence: 99%

Convenient synthesis and polymerization of 5,6‐disubstituted dithiophthalides toward soluble poly(isothianaphthene): An initial spectroscopic characterization of the resulting low‐band‐gap polymers

Polec

Henckens

Goris

et al. 2003

J. Polym. Sci. A Polym. Chem.

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A new synthetic procedure toward substituted dithiophthalides, 5,6-dialkyloxydithiophthalide and 5,6-dithioalkyldithiophthalide, is presented. 5,6-Dithiooctyldithiophthalide was obtained from 4,5-dichlorophthalic acid in an eight-step reaction with an overall yield of 26%. 5,6-Dioctyloxydithiophthalide was obtained from 4,5dihydroxyphthalic acid dimethyl ester in a seven-step reaction (overall yield ϭ 15%). Both monomers were polymerized by a thermal and nonoxidative polymerization that resulted in soluble poly(isothianaphthene) derivatives with a band gap of about 1.2 eV. Photoinduced absorption measurements revealed the existence of charged excitations upon illumination. The photoinduced charge generation, combined with the extensive light-harvesting properties and the easy processability, makes these materials quite promising for photovoltaic applications.

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A combined ellipsometric and in situ infrared (SNIFTIRS) study of poly(benzo-[c]-thiophene) films

Cited by 27 publications

References 2 publications

An ellipsometric study of poly(3,4-ethylenedioxythiophene) electrosynthesis – from the initial stages to thick layers formation

An ellipsometric study of poly(3,4-ethylenedioxythiophene) electrosynthesis – from the initial stages to thick layers formation

On the Electronic Conduction in Dry Thin Films of Prussian Blue, Prussian Yellow, and Everitt's Salt

Convenient synthesis and polymerization of 5,6‐disubstituted dithiophthalides toward soluble poly(isothianaphthene): An initial spectroscopic characterization of the resulting low‐band‐gap polymers

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