Diffusion of ferrocene methanol in super-cooled aqueous solutions using cylindrical microelectrodes
The diffusion of ferrocene methanol in super-cooled aqueous solutions containing sucrose has been studied, using disk and cylindrical microelectrodes, over a wide viscosity range. The solution viscosity and the reduced temperature T/Tg (Tg being the glass transition temperature) were varied by chang...
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2007
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13882481_v9_n7_p1444_Longinotti http://hdl.handle.net/20.500.12110/paper_13882481_v9_n7_p1444_Longinotti |
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paper:paper_13882481_v9_n7_p1444_Longinotti2023-06-08T16:13:06Z Diffusion of ferrocene methanol in super-cooled aqueous solutions using cylindrical microelectrodes Longinotti, Maria Paula Corti, Horacio Roberto Aqueous solutions Diffusion Ferrocene methanol Micro-electrodes Super-cooled Diffusion Microelectrodes Solutions Sugar (sucrose) Supercooling Viscosity Ferrocene methanol Glass forming liquids Solution viscosity Sucrose concentration Methanol The diffusion of ferrocene methanol in super-cooled aqueous solutions containing sucrose has been studied, using disk and cylindrical microelectrodes, over a wide viscosity range. The solution viscosity and the reduced temperature T/Tg (Tg being the glass transition temperature) were varied by changing the sucrose concentration and the temperature of the system. The voltammetric limiting current obtained with a disk microelectrode and the i(t) response on a cylindrical microelectrode after a potential step were used to determine diffusion coefficients from 7 × 10-6 cm2 s-1 down to 2 × 10-11 cm2 s-1. The electrochemical procedure described in this work allows a simple and accurate measurement of the dynamics of electroactive solutes in glass-forming liquids. © 2007 Elsevier B.V. All rights reserved. Fil:Longinotti, M.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Corti, H.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13882481_v9_n7_p1444_Longinotti http://hdl.handle.net/20.500.12110/paper_13882481_v9_n7_p1444_Longinotti |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Aqueous solutions Diffusion Ferrocene methanol Micro-electrodes Super-cooled Diffusion Microelectrodes Solutions Sugar (sucrose) Supercooling Viscosity Ferrocene methanol Glass forming liquids Solution viscosity Sucrose concentration Methanol |
| spellingShingle |
Aqueous solutions Diffusion Ferrocene methanol Micro-electrodes Super-cooled Diffusion Microelectrodes Solutions Sugar (sucrose) Supercooling Viscosity Ferrocene methanol Glass forming liquids Solution viscosity Sucrose concentration Methanol Longinotti, Maria Paula Corti, Horacio Roberto Diffusion of ferrocene methanol in super-cooled aqueous solutions using cylindrical microelectrodes |
| topic_facet |
Aqueous solutions Diffusion Ferrocene methanol Micro-electrodes Super-cooled Diffusion Microelectrodes Solutions Sugar (sucrose) Supercooling Viscosity Ferrocene methanol Glass forming liquids Solution viscosity Sucrose concentration Methanol |
| description |
The diffusion of ferrocene methanol in super-cooled aqueous solutions containing sucrose has been studied, using disk and cylindrical microelectrodes, over a wide viscosity range. The solution viscosity and the reduced temperature T/Tg (Tg being the glass transition temperature) were varied by changing the sucrose concentration and the temperature of the system. The voltammetric limiting current obtained with a disk microelectrode and the i(t) response on a cylindrical microelectrode after a potential step were used to determine diffusion coefficients from 7 × 10-6 cm2 s-1 down to 2 × 10-11 cm2 s-1. The electrochemical procedure described in this work allows a simple and accurate measurement of the dynamics of electroactive solutes in glass-forming liquids. © 2007 Elsevier B.V. All rights reserved. |
| author |
Longinotti, Maria Paula Corti, Horacio Roberto |
| author_facet |
Longinotti, Maria Paula Corti, Horacio Roberto |
| author_sort |
Longinotti, Maria Paula |
| title |
Diffusion of ferrocene methanol in super-cooled aqueous solutions using cylindrical microelectrodes |
| title_short |
Diffusion of ferrocene methanol in super-cooled aqueous solutions using cylindrical microelectrodes |
| title_full |
Diffusion of ferrocene methanol in super-cooled aqueous solutions using cylindrical microelectrodes |
| title_fullStr |
Diffusion of ferrocene methanol in super-cooled aqueous solutions using cylindrical microelectrodes |
| title_full_unstemmed |
Diffusion of ferrocene methanol in super-cooled aqueous solutions using cylindrical microelectrodes |
| title_sort |
diffusion of ferrocene methanol in super-cooled aqueous solutions using cylindrical microelectrodes |
| publishDate |
2007 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13882481_v9_n7_p1444_Longinotti http://hdl.handle.net/20.500.12110/paper_13882481_v9_n7_p1444_Longinotti |
| work_keys_str_mv |
AT longinottimariapaula diffusionofferrocenemethanolinsupercooledaqueoussolutionsusingcylindricalmicroelectrodes AT cortihoracioroberto diffusionofferrocenemethanolinsupercooledaqueoussolutionsusingcylindricalmicroelectrodes |
| _version_ |
1768543245413908480 |