Artículo
Longinotti, M.P.; Corti, H.R. "Diffusion of ferrocene methanol in super-cooled aqueous solutions using cylindrical microelectrodes" (2007) Electrochemistry Communications. 9(7):1444-1450
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Abstract:
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.
Registro:
| Documento: | Artículo |
| Título: | Diffusion of ferrocene methanol in super-cooled aqueous solutions using cylindrical microelectrodes |
| Autor: | Longinotti, M.P.; Corti, H.R. |
| Filiación: | Unidad de Actividad Física, Comisión Nacional de Energía Atómica, Avda., General Paz 1499, 1650 San Martín, Buenos Aires, Argentina Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellon II, Ciudad Universitaria, 1428 Buenos Aires, Argentina |
| Palabras clave: | 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 |
| Año: | 2007 |
| Volumen: | 9 |
| Número: | 7 |
| Página de inicio: | 1444 |
| Página de fin: | 1450 |
| DOI: | http://dx.doi.org/10.1016/j.elecom.2007.02.003 |
| Título revista: | Electrochemistry Communications |
| Título revista abreviado: | Electrochem. Commun. |
| ISSN: | 13882481 |
| CODEN: | ECCMF |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13882481_v9_n7_p1444_Longinotti |
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Citas:
---------- APA ----------
Longinotti, M.P. & Corti, H.R. (2007) . Diffusion of ferrocene methanol in super-cooled aqueous solutions using cylindrical microelectrodes. Electrochemistry Communications, 9(7), 1444-1450.http://dx.doi.org/10.1016/j.elecom.2007.02.003
---------- CHICAGO ----------
Longinotti, M.P., Corti, H.R. "Diffusion of ferrocene methanol in super-cooled aqueous solutions using cylindrical microelectrodes" . Electrochemistry Communications 9, no. 7 (2007) : 1444-1450.http://dx.doi.org/10.1016/j.elecom.2007.02.003
---------- MLA ----------
Longinotti, M.P., Corti, H.R. "Diffusion of ferrocene methanol in super-cooled aqueous solutions using cylindrical microelectrodes" . Electrochemistry Communications, vol. 9, no. 7, 2007, pp. 1444-1450.http://dx.doi.org/10.1016/j.elecom.2007.02.003
---------- VANCOUVER ----------
Longinotti, M.P., Corti, H.R. Diffusion of ferrocene methanol in super-cooled aqueous solutions using cylindrical microelectrodes. Electrochem. Commun. 2007;9(7):1444-1450.http://dx.doi.org/10.1016/j.elecom.2007.02.003
