Artículo
Abstract:
Conducting polymers are important materials for several applications, among them, newly developed sensors that are based on changes in the conductivity of polyaniline (PANI). These sensors usually have pH limitations related to PANI characteristics (need for positive charge on the nitrogen atoms to get high conductivities). In this work, we report on a simple and fast treatment with propane sultone to dramatically improve PANI conductivity at neutral pH. As a result of this treatment, conductivity of the partially sultonated PANI (PSPANI) keeps its high conductivity at low pH almost unchanged, and as the pH approaches neutrality, PSPANI remains remarkably conductive (resistance grows less than 10 fold), while resistance in PANI increases up to 6 orders of magnitude. Electrochemical techniques and X-ray photoelectron spectroscopy are used to study the reaction. An application of this treatment to a hydrogen peroxide sensor is presented. Detection of < 1 ppm at neutral pH could be achieved.
Registro:
| Documento: | Artículo |
| Título: | A microelectrochemical enzyme transistor based on an N-alkylated poly(aniline) and its application to determine hydrogen peroxide at neutral pH |
| Autor: | Raffa, D.; Leung, K.T.; Battaglini, F. |
| Filiación: | INQUIMAE, Departamento de Quimica Inorganica, Universidad de Buenos Aires, C1428EHA Buenos Aires, Argentina Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ont. N2L 3G1, Canada |
| Palabras clave: | Alkylation; Conductive materials; Electrochemistry; Hydrogen peroxide; Microsensors; Organic polymers; pH effects; Sulfonation; X ray photoelectron spectroscopy; Conducting polymers; Microelectromechanical devices; hydrogen peroxide; nitrogen; polyaniline; propanesultone; alkylation; article; electric conductivity; electricity; electrochemical analysis; electrochemistry; electronic sensor; pH; reaction analysis; semiconductor; X ray photoelectron spectroscopy |
| Año: | 2003 |
| Volumen: | 75 |
| Número: | 19 |
| Página de inicio: | 4983 |
| Página de fin: | 4987 |
| DOI: | http://dx.doi.org/10.1021/ac0341620 |
| Título revista: | Analytical Chemistry |
| Título revista abreviado: | Anal. Chem. |
| ISSN: | 00032700 |
| CODEN: | ANCHA |
| CAS: | hydrogen peroxide, 7722-84-1; nitrogen, 7727-37-9; polyaniline, 25233-30-1; propanesultone, 1120-71-4 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00032700_v75_n19_p4983_Raffa |
Referencias:
- Bartlett, P.N., Astier, Y., (2000) J. Chem. Soc., Chem. Commun., pp. 105-112
- Bartlett, P.N., Birkin, P.R., Palmisano, F., De Benedetto, G., (1996) J. Chem. Soc., Faraday Trans., 92, pp. 3123-3130
- Bartlett, P.N., Birkin, P.R., Wang, J.H., Palmisano, F., De Benedetto, G., (1998) Anal. Chem., 70, pp. 3685-3694
- Bartlett, P.N., Wang, J.H., Wallace, E.N.K., (1996) J. Chem. Soc., Chem. Commun., pp. 359-360
- Bartlett, P.N., Wang, J.H., (1996) J. Chem. Soc., Faraday Trans., 92, pp. 4137-4143
- Chevalier, J.-W., Bergeron, J.-Y., Dao, L.H., (1992) Macromolecules, 25, pp. 3325-3331
- Mikhael, M.G., Padias, A.B., Hall H.K., Jr., (1997) J. Polym. Sci., A: Polym. Chem., 35, pp. 1673-1679
- McCoy, C.H., Lorkovic, I.M., Wrighton, M.S., (1995) J. Am. Chem. Soc., 117, pp. 6934-6943
- Bergeron, J.-Y., Chevalier, J.-W., Dao, L.H., (1990) J. Chem. Soc., Chem. Commun., pp. 180-182
- Chen, S.A., Hwang, G.-W., (1995) J. Am. Chem. Soc., 117, pp. 10055-10062
- Raffa, D.L., Battaglini, F., (2001) J. Electroanal. Chem., 504, pp. 120-124
- Paul, E.W., Ricco, A.J., Wrighton, M.S., (1985) J. Phys. Chem., 89, pp. 1441-1447
- Bartlett, P.N., Birkin, P.R., (1993) Anal. Chem., 65, pp. 1118-1119
Citas:
---------- APA ----------
Raffa, D., Leung, K.T. & Battaglini, F. (2003) . A microelectrochemical enzyme transistor based on an N-alkylated poly(aniline) and its application to determine hydrogen peroxide at neutral pH. Analytical Chemistry, 75(19), 4983-4987.http://dx.doi.org/10.1021/ac0341620
---------- CHICAGO ----------
Raffa, D., Leung, K.T., Battaglini, F. "A microelectrochemical enzyme transistor based on an N-alkylated poly(aniline) and its application to determine hydrogen peroxide at neutral pH" . Analytical Chemistry 75, no. 19 (2003) : 4983-4987.http://dx.doi.org/10.1021/ac0341620
---------- MLA ----------
Raffa, D., Leung, K.T., Battaglini, F. "A microelectrochemical enzyme transistor based on an N-alkylated poly(aniline) and its application to determine hydrogen peroxide at neutral pH" . Analytical Chemistry, vol. 75, no. 19, 2003, pp. 4983-4987.http://dx.doi.org/10.1021/ac0341620
---------- VANCOUVER ----------
Raffa, D., Leung, K.T., Battaglini, F. A microelectrochemical enzyme transistor based on an N-alkylated poly(aniline) and its application to determine hydrogen peroxide at neutral pH. Anal. Chem. 2003;75(19):4983-4987.http://dx.doi.org/10.1021/ac0341620
