Výsledky vyhledávání - "Hans-Peter Welzel"

Reactive groups on polymer-covered electrodes

Autor: Gunnar Engelmann, Hans-Peter Welzel, Wolf-Dietrich Hunnius, Waldfried Plieth, Gerhard Kossmehl

Publikováno v: Journal of Solid State Electrochemistry. 5:141-149

Polythiophene films containing ester groups on the surface of electrodes are interesting potential carrier materials for reagents. Methyl thiophene-3-acetate (3) can be copolymerized with 3-methylthiophene (1) and 3-butylthiophene (2) by means of cyc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f99293bee172c15630c9b3db55ddfe18
https://doi.org/10.1007/s100080000112

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Reactive groups on polymer covered electrodes 6-Copolymerization of 2,2′-bithiophene with methyl thiophene-3-acetate and 3-methylthiophene

Autor: Gerhard Kossmehl, W.-D. Hunnius, Hans-Peter Welzel, Waldfried Plieth, Gunnar Engelmann

Publikováno v: Electrochimica Acta. 44:1827-1832

Polythiophene films at the surface of electrodes containing ester groups are interesting potential carrier materials for reagents. Methyl thiophene-3-acetate (2) can be copolymerized with 3-methylthiophene (1) by means of cyclic voltammetry at potent

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9560b2aab8867dff932c62ed9f9ce4e2
https://doi.org/10.1016/s0013-4686(98)00331-4

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Synthesis and electropolymerization of new p-nitrophenyl-functionalized thiophene derivatives

Autor: Guangtao Li, Gerhard Koßmehl, Hans-Peter Welzel, Waldfried Plieth, Hesun Zhu

Publikováno v: Macromolecular Chemistry and Physics. 199:2737-2746

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1ff49e82fa41d2cfeed7557214fd46dd
https://doi.org/10.1002/macp.1998.021991217

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Synthesis and electropolymerization of newp-nitrophenyl-functionalized thiophene derivatives

Autor: Waldfried Plieth, Hesun Zhu, Gerhard Koßmehl, Guangtao Li, Hans-Peter Welzel

Publikováno v: Macromolecular Chemistry and Physics. 199:2737-2746

Electrooxidative polymerization of three new p-nitrophenyl-functionalized thiophene derivatives leads to materials which show the electroactivities of both nitrobenzene and polythiophene. However, other than the reversible redox transition in solutio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7e7ea5d972d02b65ad161c7d90c2f12e
https://doi.org/10.1002/(sici)1521-3935(19981201)199:12<2737::aid-macp2737>3.0.co

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Reactive groups on polymer coated electrodes, 8. Novel conducting polymer interfaces produced by electrochemical copolymerization of functionalized thiophene activated esters with 3-methylthiophene

Autor: Guangtao Li, Wolf-Dietrich Hunnius, Hesun Zhu, Hans-Peter Welzel, Gerhard Koßmehl, Gunnar Engelmann, Waldfried Plieth

Publikováno v: Macromolecular Chemistry and Physics. 199:2255-2266

With the synthesis of two new functionalized thiophene activated esters and their electrocopolymerization with 3-methylthiophene, two types of redox active polymers have been prepared. FTIR studies of the resultant polymers reveal that both types of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0e9fe116c7a6f58d9312580eeeff29a6
https://doi.org/10.1002/(sici)1521-3935(19981001)199:10<2255::aid-macp2255>3.0.co

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Reactive groups on polymer coated electrodes, 7. New electrogenerated electroactive polythiophenes with different protected carboxyl groups

Autor: Gerhard Koßmehl, Hesun Zhu, Wolf-Dietrich Hunnius, Waldfried Plieth, Guangtao Li, Gunnar Engelmann, Hans-Peter Welzel

Publikováno v: Macromolecular Chemistry and Physics. 199:525-533

By the protection of the carboxyl group of 3-thiopheneacetic acid with differently substituted benzyl groups a series of new thiophene derivatives were synthesized. While 3-thiopheneacetic acid is not electropolymerizable, the new obtained monomers c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::39263f00d4efd30f2ee8013554e99716
https://doi.org/10.1002/(sici)1521-3935(19980401)199:4<525::aid-macp525>3.0.co

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Studies on β-methylated end-capped bithiophenes

Autor: Gunnar Engelmann, Jürgen Heinze, Werner Jugelt, G. Kossmehl, P. Tschuncky, Hans-Peter Welzel

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

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::892a3be7c8be9a81bcd9c96e7c021394
https://doi.org/10.1039/a702499a

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Reactive Groups on Polymer-Covered Electrodes. 5. Synthesis and Cyclovoltammetric Analysis of 3-Substituted Thiophene Derivatives

Autor: H. Boettcher, Hans-Peter Welzel, Gerhard Kossmehl, W.-D. Hunnius, Gunnar Engelmann

Publikováno v: Macromolecules. 30:7419-7426

Various functionalized polythiophene films on electrode surfaces were produced by electropolymerization. Starting from 3-(2-hydroxyethyl)thiophene (1) different ether and ester derivatives were synthesized: 3-(2-(benzyloxy)ethyl)thiophene (2), 3-[2-(

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::79ec3c9a558b7d3ac3e33c4f80f616c3
https://doi.org/10.1021/ma9612236

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