FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2014429587> ?p ?o ?g. }

• W2014429587 endingPage "280" @default.
• W2014429587 startingPage "275" @default.
• W2014429587 abstract "A theoretical analysis of mass transport phenomena in conductive polymer-modified electrodes is presented. In the first part, the electronic transport properties of such polymers are described by two different diffusion coefficients: one relates to the electron mobility in the conductive state, the other describes electronic transport in the non-conductive state. Thus, this approach postulates a discontinuity for the electron diffusion coefficient with the local concentration of oxidized states within the film. It is shown that this hypothesis leads to the concept of a moving front which separates an area where the film is in its conductive state from one where it is in its insulating state. The same conclusions are drawn when D increases steeply with the concentration of oxidized sites, i.e. the doping level of the polymer. Thus, moving front phenomena appear to be intrinsically linked to the specificity of conductive polymers, i.e. the dramatic change in electronic conductivity upon switching. Assuming that the electrochemical process, for a chronoamperometric experiment, is controlled by electron diffusion leads to a front velocity proportional to t−1/2 and to the diffusion coefficient of the electron in the conductive zone. When this coefficient tends towards infinity a contradiction to the assumption of a process controlled by electron movements occurs. In this case, the electrochemical process can be controlled either by counter-ion movements or by the rate of the electrochemical reaction that takes place at the moving boundary; the velocity of the front is not proportional to t−1/2 and the chronoamperometric response can deviate from the usual Cottrell behaviour. In the second part of this work, the counter-ion movement is analysed. It is proposed that the conducting properties of the material might lead to a marked enhancement of the migrational aspect of ion transport within the internal structure of the film. It is then shown that describing ion transport as a migration phenomenon instead of a diffusion phenomenon leads again to the concept of a moving front. Several propagation equations are demonstrated: the first describes the concentration profile of counter-ions and the second describes the potential profile within the film. These two equations indicate that both concentration and electric potential propagate in the material at the same velocity. This velocity is proportional to the driving electric field, i.e. the potential drop that develops at the conductive|insulating interface or within the insulating zone of the material and varies with anion mobility." @default.
• W2014429587 created "2016-06-24" @default.
• W2014429587 creator A5016559312 @default.
• W2014429587 creator A5050685682 @default.
• W2014429587 creator A5075126811 @default.
• W2014429587 creator A5075256802 @default.
• W2014429587 date "1991-06-01" @default.
• W2014429587 modified "2023-09-24" @default.
• W2014429587 title "Fast redox switching of polypyrrole films on ultramicroelectrodes" @default.
• W2014429587 cites W1548805537 @default.
• W2014429587 cites W1990444872 @default.
• W2014429587 cites W1998070716 @default.
• W2014429587 cites W2005697700 @default.
• W2014429587 cites W2006166103 @default.
• W2014429587 cites W2047409333 @default.
• W2014429587 cites W2048171236 @default.
• W2014429587 cites W2061767713 @default.
• W2014429587 cites W2073981463 @default.
• W2014429587 cites W2074715351 @default.
• W2014429587 cites W2077139734 @default.
• W2014429587 cites W2083273646 @default.
• W2014429587 cites W2153464353 @default.
• W2014429587 doi "https://doi.org/10.1016/0022-0728(91)85555-4" @default.
• W2014429587 hasPublicationYear "1991" @default.
• W2014429587 type Work @default.
• W2014429587 sameAs 2014429587 @default.
• W2014429587 citedByCount "20" @default.
• W2014429587 countsByYear W20144295872016 @default.
• W2014429587 crossrefType "journal-article" @default.
• W2014429587 hasAuthorship W2014429587A5016559312 @default.
• W2014429587 hasAuthorship W2014429587A5050685682 @default.
• W2014429587 hasAuthorship W2014429587A5075126811 @default.
• W2014429587 hasAuthorship W2014429587A5075256802 @default.
• W2014429587 hasConcept C121332964 @default.
• W2014429587 hasConcept C131540310 @default.
• W2014429587 hasConcept C133495861 @default.
• W2014429587 hasConcept C147120987 @default.
• W2014429587 hasConcept C147789679 @default.
• W2014429587 hasConcept C159467904 @default.
• W2014429587 hasConcept C159985019 @default.
• W2014429587 hasConcept C17525397 @default.
• W2014429587 hasConcept C185592680 @default.
• W2014429587 hasConcept C192562407 @default.
• W2014429587 hasConcept C202374169 @default.
• W2014429587 hasConcept C26873012 @default.
• W2014429587 hasConcept C2777232022 @default.
• W2014429587 hasConcept C521977710 @default.
• W2014429587 hasConcept C52859227 @default.
• W2014429587 hasConcept C62520636 @default.
• W2014429587 hasConcept C69357855 @default.
• W2014429587 hasConcept C97355855 @default.
• W2014429587 hasConceptScore W2014429587C121332964 @default.
• W2014429587 hasConceptScore W2014429587C131540310 @default.
• W2014429587 hasConceptScore W2014429587C133495861 @default.
• W2014429587 hasConceptScore W2014429587C147120987 @default.
• W2014429587 hasConceptScore W2014429587C147789679 @default.
• W2014429587 hasConceptScore W2014429587C159467904 @default.
• W2014429587 hasConceptScore W2014429587C159985019 @default.
• W2014429587 hasConceptScore W2014429587C17525397 @default.
• W2014429587 hasConceptScore W2014429587C185592680 @default.
• W2014429587 hasConceptScore W2014429587C192562407 @default.
• W2014429587 hasConceptScore W2014429587C202374169 @default.
• W2014429587 hasConceptScore W2014429587C26873012 @default.
• W2014429587 hasConceptScore W2014429587C2777232022 @default.
• W2014429587 hasConceptScore W2014429587C521977710 @default.
• W2014429587 hasConceptScore W2014429587C52859227 @default.
• W2014429587 hasConceptScore W2014429587C62520636 @default.
• W2014429587 hasConceptScore W2014429587C69357855 @default.
• W2014429587 hasConceptScore W2014429587C97355855 @default.
• W2014429587 hasIssue "1-2" @default.
• W2014429587 hasLocation W20144295871 @default.
• W2014429587 hasOpenAccess W2014429587 @default.
• W2014429587 hasPrimaryLocation W20144295871 @default.
• W2014429587 hasRelatedWork W1990298262 @default.
• W2014429587 hasRelatedWork W2015323650 @default.
• W2014429587 hasRelatedWork W2025102758 @default.
• W2014429587 hasRelatedWork W2047683779 @default.
• W2014429587 hasRelatedWork W2057680117 @default.
• W2014429587 hasRelatedWork W2066416716 @default.
• W2014429587 hasRelatedWork W2070625954 @default.
• W2014429587 hasRelatedWork W2083179358 @default.
• W2014429587 hasRelatedWork W2091314282 @default.
• W2014429587 hasRelatedWork W2513732933 @default.
• W2014429587 hasVolume "307" @default.
• W2014429587 isParatext "false" @default.
• W2014429587 isRetracted "false" @default.
• W2014429587 magId "2014429587" @default.
• W2014429587 workType "article" @default.