Artículo
Abstract:
A fast high-frequency 'in situ' transfer-function measurement with a quartz crystal microbalance (QCM) has been obtained by an ac voltage divider formed by the quartz crystal impedance (ZQ) and a measuring resistor (Rm). The frequency is swept by a voltage-controlled oscillator (VCO) and the ratio of output (Eo) and input (Ei) ac voltages gives the transfer function of the device. A non-linear fit of the transfer-function modulus vs. frequency around the natural resonance frequency of the system in the 10 MHz range was performed with a Butterworth-Van Dyke equivalent circuit. Mass and viscoelastic components were evaluated with the Sauerbrey-Kanazawa-Bruckenstein equations. The method was tested by varying the viscoelasticity of the quartz surface in sucrose solutions [i.e. by varying the quantity (ρLηL)1/2] and mass sensitivity was calibrated by silver deposition. Fast measurements in non-steady-state experiments were performed with redox hydrogels undergoing oxidation and reduction with anion and water exchange with the outside solution. Deconvolution of both rigid mass (Δm) and viscous resistance (R) was achieved and this explained the abnormal behaviour of the resonance-frequency shift (Δf) during cyclic voltammetry of ferrocene-modified poly(allylamine) hydrogels on a resonant electrochemical QCM.
Registro:
| Documento: | Artículo |
| Título: | Measurement of viscoelastic changes at electrodes modified with redox hydrogels with a quartz crystal device |
| Autor: | Calvo, E.J.; Danilowicz, C.; Etchenique, R. |
| Filiación: | INQUIMAE- Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, AR-1428 Buenos Aires, Argentina CONICET, Argentina |
| Año: | 1995 |
| Volumen: | 91 |
| Número: | 22 |
| Página de inicio: | 4083 |
| Página de fin: | 4091 |
| DOI: | http://dx.doi.org/10.1039/FT9959104083 |
| Título revista: | Journal of the Chemical Society, Faraday Transactions |
| ISSN: | 09565000 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09565000_v91_n22_p4083_Calvo |
Referencias:
- (1992) Molecular Design of Electrode Surfaces, , R. Murray, Techniques in Chemistry, Wiley, New York, XXII
- Buttry, D.A., Ward, M.D., (1992) Chem. Rev., 92, p. 1355
- Buttry, D.A., (1991) Electrochemical Interfaces, , VCH, Weinheim, ch. 10
- Clarke, A.P., Vos, J.G., Gildle, A., Hillman, A.R., (1993) J. Chem. Soc., Faraday Trans., 89, p. 1695
- Bruckenstein, S., Wilde, P., Hillman, A.R., (1990) J. Phys. Chem., 94, p. 6468
- Hillman, A.R., Loveday, D.C., Bruckenstein, S., Wilde, P., (1990) J. Chem. Soc., Faraday Trans., 86, p. 437
- Kanazawa, K.K., New Characterization Techniques for Thin Polymer Films, , Ho-Ming Tong and L. T. Nguyen, Wiley, ch. 5, 125
- Martin, S.J., Granstaff, V.E., Frye, G.C., (1991) Anal. Chem., 63, p. 2272
- Borjas, R., (1990) J. Electroanal. Chem., 280, p. 73
- Muramatsu, H., Tamiya, E., Karube, I., (1988) Anal. Chem., 60, p. 2142
- Frubose, C., Doblhofer, K., Soares, D.M., (1993) Ber. Bunsen-Ges Phys. Chem., 95, p. 475
- Soares, D.M., Kautek, W., Fruböse, C., Doblhofer, K., (1994) Ber. Bunsen-Ges. Phys. Chem., 98, p. 219
- Muramatsu, H., Ye, X., Suda, M., Sakuhara, T., Ataka, T., (1992) J. Electroanal. Chem., 322, p. 311
- Van Dyke, K.S., (1925) Phys. Rev., 25, p. 895
- (1984) Applications of LM833, Linear Supplement Databook, p. 51. , National Semiconductors Corp
- (1991) Operation and programming manual, , HP5334B Universal Counter, Hewlett-Packard Co., Santa Clara, CA
- Benje, M., Eiermann, M., Pittermann, U., Weil, K.G., (1986) Ber. Bunsen-Ges. Phys. Chem., 90, p. 435
- Bard, A.J., Faulkner, L.R., (1980) Electrochemical Methods. Fundamentals and Applications, , Wiley, New York, ch. 13
- (1959) Handbook of Chemistry and Physics, , Chemical Rubber Publishing Co., Cleveland, OH, 45th edn, 2194 and 2064
- Calvo, E.J., Danilowicz, C., Diaz, L., (1994) J. Electroanal. Chem., 369, p. 279
- Noël, M.A.M., Topart, P., (1994) Anal. Chem., 66, p. 484
- Tiean, Z., Liehua, N., Shouzhuo, Y., (1990) J. Electroanal. Chem., 293, p. 1
- Sauerbrey, G., (1959) Z. Phys., 155, p. 206
- Bruckenstein, S., Shay, M., (1985) Electrochim. Acta, 30, p. 1295
- Kanazawa, K.K., Gordon III, J.G., (1985) Anal. Chem., 57, p. 1770
- Reed, C.E., Kanazawa, K.K., Kaufman, J.H.J., (1990) J. Appl. Phys., 68, p. 1993
- Beck, R., Pitterman, U., Weil, K.G., (1992) J. Electrochem. Soc., 139, p. 453
- Varineau, P.T., Buttry, D.A., (1987) J. Phys. Chem., 91, p. 1292
- Inzelt, G., Bácskai, J., (1992) Electrochim. Acta., 37, p. 647
- Bruckenstein, S., Wilde, C.P., Hillman, A.R., (1990) J. Phys. Chem., 94, p. 6458
- Oyama, N., Tatsuma, T., Takahashi, K., (1993) J. Phys. Chem., 97, p. 10
- Muramatsu, H., Ye, X., Ataka, T., (1993) J. Electroanal. Chem., 347, p. 247
- Battaglini, F., Calvo, E.J., (1994) J. Chem. Soc., Faraday Trans., 90, p. 987
- Johannsmann, D., Mathauer, K., Wegner, G., Knoll, W., (1992) Phys. Rev. B, 46, p. 7808
- Duncan-Hewitt, W.C., Thompson, M., (1992) Anal. Chem., 64, p. 94
Citas:
---------- APA ----------
Calvo, E.J., Danilowicz, C. & Etchenique, R. (1995) . Measurement of viscoelastic changes at electrodes modified with redox hydrogels with a quartz crystal device. Journal of the Chemical Society, Faraday Transactions, 91(22), 4083-4091.http://dx.doi.org/10.1039/FT9959104083
---------- CHICAGO ----------
Calvo, E.J., Danilowicz, C., Etchenique, R. "Measurement of viscoelastic changes at electrodes modified with redox hydrogels with a quartz crystal device" . Journal of the Chemical Society, Faraday Transactions 91, no. 22 (1995) : 4083-4091.http://dx.doi.org/10.1039/FT9959104083
---------- MLA ----------
Calvo, E.J., Danilowicz, C., Etchenique, R. "Measurement of viscoelastic changes at electrodes modified with redox hydrogels with a quartz crystal device" . Journal of the Chemical Society, Faraday Transactions, vol. 91, no. 22, 1995, pp. 4083-4091.http://dx.doi.org/10.1039/FT9959104083
---------- VANCOUVER ----------
Calvo, E.J., Danilowicz, C., Etchenique, R. Measurement of viscoelastic changes at electrodes modified with redox hydrogels with a quartz crystal device. 1995;91(22):4083-4091.http://dx.doi.org/10.1039/FT9959104083
