Formation of redox-active self-assembled polyelectrolyte-surfactant complexes integrating glucose oxidase on electrodes: Influence of the self-assembly solvent on the signal generation
In this work the effects of the self-assembly solvent on the structure and electrochemical behavior of redox-active polyelectrolyte-surfactant complexes cast on electrode supports from aqueous and DMF solutions are presented. The complex studied is formed by complexation of osmium complex-modified p...
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todo:paper_15675394_v105_n_p117_Cortez2023-10-03T16:26:37Z Formation of redox-active self-assembled polyelectrolyte-surfactant complexes integrating glucose oxidase on electrodes: Influence of the self-assembly solvent on the signal generation Cortez, M.L. Ceolín, M. Azzaroni, O. Battaglini, F. Electrochemical electrodes Electrodes Glucose Glucose sensors Polyelectrolytes Redox reactions Self assembly Surface active agents Adsorption characteristic Electrochemical behaviors Glucose oxidases (GOx) Humid environment Mesostructural ordering Polyelectrolyte-surfactant complexes Signal generation Structural transitions Glucose oxidase dodecyl sulfate glucose glucose oxidase osmium polyelectrolyte solvent surfactant electrolyte surfactant adsorption aqueous solution Article chemical structure complex formation composite material concentration (parameters) contact angle electrochemical analysis electrode electron transport exposure glucose oxidation synthesis chemistry electrode oxidation reduction reaction Electrodes Electrolytes Glucose Oxidase Oxidation-Reduction Surface-Active Agents In this work the effects of the self-assembly solvent on the structure and electrochemical behavior of redox-active polyelectrolyte-surfactant complexes cast on electrode supports from aqueous and DMF solutions are presented. The complex studied is formed by complexation of osmium complex-modified polyallylamine (OsPA) with dodecyl sulfate (DS) surfactants. The structure of the films was characterized by GISAXS, showing that films present a lamellar mesostructure. However, when they are exposed to humid environments, films cast from aqueous solutions (OsPA-DSaq) undergo a structural transition that ultimately leads to the disappearance of the mesostructural order. On the other hand, OsPA-DS films cast from DMF solutions (OsPA-DSorg) revealed no significant changes upon exposure to humid environments. Both types of films were exposed to glucose oxidase (GOx), showing similar adsorption characteristics. Notwithstanding these similarities in GOx and content, OsPA-DSaq films revealed a more sensitive bioelectrocatalytical response to glucose as compared to OsPA-DSorg films. © 2015 Elsevier B.V. Fil:Cortez, M.L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Battaglini, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15675394_v105_n_p117_Cortez |
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Universidad de Buenos Aires |
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I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Electrochemical electrodes Electrodes Glucose Glucose sensors Polyelectrolytes Redox reactions Self assembly Surface active agents Adsorption characteristic Electrochemical behaviors Glucose oxidases (GOx) Humid environment Mesostructural ordering Polyelectrolyte-surfactant complexes Signal generation Structural transitions Glucose oxidase dodecyl sulfate glucose glucose oxidase osmium polyelectrolyte solvent surfactant electrolyte surfactant adsorption aqueous solution Article chemical structure complex formation composite material concentration (parameters) contact angle electrochemical analysis electrode electron transport exposure glucose oxidation synthesis chemistry electrode oxidation reduction reaction Electrodes Electrolytes Glucose Oxidase Oxidation-Reduction Surface-Active Agents |
| spellingShingle |
Electrochemical electrodes Electrodes Glucose Glucose sensors Polyelectrolytes Redox reactions Self assembly Surface active agents Adsorption characteristic Electrochemical behaviors Glucose oxidases (GOx) Humid environment Mesostructural ordering Polyelectrolyte-surfactant complexes Signal generation Structural transitions Glucose oxidase dodecyl sulfate glucose glucose oxidase osmium polyelectrolyte solvent surfactant electrolyte surfactant adsorption aqueous solution Article chemical structure complex formation composite material concentration (parameters) contact angle electrochemical analysis electrode electron transport exposure glucose oxidation synthesis chemistry electrode oxidation reduction reaction Electrodes Electrolytes Glucose Oxidase Oxidation-Reduction Surface-Active Agents Cortez, M.L. Ceolín, M. Azzaroni, O. Battaglini, F. Formation of redox-active self-assembled polyelectrolyte-surfactant complexes integrating glucose oxidase on electrodes: Influence of the self-assembly solvent on the signal generation |
| topic_facet |
Electrochemical electrodes Electrodes Glucose Glucose sensors Polyelectrolytes Redox reactions Self assembly Surface active agents Adsorption characteristic Electrochemical behaviors Glucose oxidases (GOx) Humid environment Mesostructural ordering Polyelectrolyte-surfactant complexes Signal generation Structural transitions Glucose oxidase dodecyl sulfate glucose glucose oxidase osmium polyelectrolyte solvent surfactant electrolyte surfactant adsorption aqueous solution Article chemical structure complex formation composite material concentration (parameters) contact angle electrochemical analysis electrode electron transport exposure glucose oxidation synthesis chemistry electrode oxidation reduction reaction Electrodes Electrolytes Glucose Oxidase Oxidation-Reduction Surface-Active Agents |
| description |
In this work the effects of the self-assembly solvent on the structure and electrochemical behavior of redox-active polyelectrolyte-surfactant complexes cast on electrode supports from aqueous and DMF solutions are presented. The complex studied is formed by complexation of osmium complex-modified polyallylamine (OsPA) with dodecyl sulfate (DS) surfactants. The structure of the films was characterized by GISAXS, showing that films present a lamellar mesostructure. However, when they are exposed to humid environments, films cast from aqueous solutions (OsPA-DSaq) undergo a structural transition that ultimately leads to the disappearance of the mesostructural order. On the other hand, OsPA-DS films cast from DMF solutions (OsPA-DSorg) revealed no significant changes upon exposure to humid environments. Both types of films were exposed to glucose oxidase (GOx), showing similar adsorption characteristics. Notwithstanding these similarities in GOx and content, OsPA-DSaq films revealed a more sensitive bioelectrocatalytical response to glucose as compared to OsPA-DSorg films. © 2015 Elsevier B.V. |
| format |
JOUR |
| author |
Cortez, M.L. Ceolín, M. Azzaroni, O. Battaglini, F. |
| author_facet |
Cortez, M.L. Ceolín, M. Azzaroni, O. Battaglini, F. |
| author_sort |
Cortez, M.L. |
| title |
Formation of redox-active self-assembled polyelectrolyte-surfactant complexes integrating glucose oxidase on electrodes: Influence of the self-assembly solvent on the signal generation |
| title_short |
Formation of redox-active self-assembled polyelectrolyte-surfactant complexes integrating glucose oxidase on electrodes: Influence of the self-assembly solvent on the signal generation |
| title_full |
Formation of redox-active self-assembled polyelectrolyte-surfactant complexes integrating glucose oxidase on electrodes: Influence of the self-assembly solvent on the signal generation |
| title_fullStr |
Formation of redox-active self-assembled polyelectrolyte-surfactant complexes integrating glucose oxidase on electrodes: Influence of the self-assembly solvent on the signal generation |
| title_full_unstemmed |
Formation of redox-active self-assembled polyelectrolyte-surfactant complexes integrating glucose oxidase on electrodes: Influence of the self-assembly solvent on the signal generation |
| title_sort |
formation of redox-active self-assembled polyelectrolyte-surfactant complexes integrating glucose oxidase on electrodes: influence of the self-assembly solvent on the signal generation |
| url |
http://hdl.handle.net/20.500.12110/paper_15675394_v105_n_p117_Cortez |
| work_keys_str_mv |
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| _version_ |
1807320346071662592 |