Zobrazeno 1 - 10
of 164
pro vyhledávání: '"G. Koßmehl"'
Publikováno v:
Journal of Polymer Science Part C: Polymer Symposia. 22:463-475
Polymers with a structure similar to phthalocyanine were made by melting of tetracyanothiophene (I), tetracyanofuran (II), octacyano-P.P.P-triphenylphospholidine (III), tetramethyl-bis(maleonitriledithiolato)cuprate (IVa), and copper bis(maleonitrile
Publikováno v:
Journal of Solid State Electrochemistry. 4:225-230
Photoelectrochemical measurements have been performed at a polybithienyl (PBT) film (doping level of 1 × 1018/cm3) deposited on a platinum electrode. The cathodic photocurrents and negative slope of the Mott-Schottky plot indicate that the PBT film
Autor:
Wolfgang Kautek, Waldfried Plieth, Karl Doblhofer, Guangtao Li, G. Koßmehl, Hesun Zhu, J. Melscheimer
Publikováno v:
Acta Polymerica. 50:252-259
The syntheses and electropolymerization of 3-alkylthiophene functionalized with terminal 1,2-diol group as well as its protected forms were described. It was found that, in spite of the nucleophilic nature of diol function, the thiophene derivative b
Publikováno v:
Journal of Solid State Electrochemistry. 2:355-361
The polymerization of aniline has been studied employing in-situ electrochemical and Raman spectroscopical techniques. Aniline was polymerized by cyclic voltammetry on a Pt surface in sulfuric acid solutions of aniline. The Raman bands were assigned
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :169-176
The reactivity of a variety of differently β-methylated oxidized α,α′-blocked (end-capped) bithiophenes has been studied. Electroanalytical methods such as cyclic voltammetry and studies with a rotating-ring disc electrode (RRDE) are employed, r
Publikováno v:
Journal of Electroanalytical Chemistry. 433:223-226
Cyclic voltammetric measurements at different temperatures, concentrations and scan rates give evidence for the reversible dimerization of 3,3′,5,5′,tetramethyl-2,2′-bithiophene radical cations. The analysis of the experimental data confirm the
Publikováno v:
International Journal of Environmental Analytical Chemistry. 67:223-236
A novel polymer-chemosensor microsystem which can be operated without additional energy consuming heating is presented. Production steps were reduced to metal coating of ceramic plates and structuring of an interdigital array by CAD-supported pulsed
Autor:
B. Labahn, G. Kossmehl
Publikováno v:
Zeitschrift für Naturforschung B. 51:286-294
Polysiloxanes as side chain polymers containing the 2.2′-bithiophene unit, hexyl and octyl terminal groups and spacer units with 3, 5. 6 and 10 methylene groups were prepared and characterized. These polymers have monotropic liquid crystalline phas
Publikováno v:
Liquid Crystals. 20:95-98
As part of a broader study of liquid crystal polymers with side groups containing fluorene moieties, more information was required about the properties of fluorene derivatives. With this aim in mind, the solution Kerr-effects for five fluorene-based
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 269:39-53
As starting materials for liquid crystalline polyesters, a number of bis [4-(ω-alkenyloxybenzoyl)oxy arenes (arising from the diols hydroquinone, 4,4′-biphenyldiol, 1,6-di(4-hydroxyphenyl)hexane, 2,7-fluorenediol and 2,7-fluorenonediol) have been