Electrochemical Characteristics of a 7-Ferrocenyl(carbonyloxy)-1- Heptanethiol-Modified Gold Electrode

The electrochemical properties of 7-ferrocenyl(carbonyloxy)-1-heptanethiol [FcCO2(CH2)7SH] were characterized by an electrochemical quartz crystal microbalance (EQCM). A gold surface was modified with FcCO2(CH2)7SH by the self-assembly method. EQCM was used to investigate mass change during the redox reactions of FcCO2(CH2)7SH monolayers on a modified gold electrode in solution containing K3Fe(CN)6 redox species. The FcCO2(CH2)7SH monolayer on gold acts as a mediator for the electron transfer between a gold electrode and electroactive species Fe(CN)63-/4- in solution. In both cases, electrochemical current responses were complicated because the observed currents were due to the redox of both the ferrocenyl group immobilized on gold and others in electrolyte solutions. The interfacial mass change (i.e. frequency change) on the gold electrode surface was observed during the redox of ferrocenyl groups.

Anahtar Kelimeler:

Electrochemical quartz crystal microbalance (EQCM), surface coverage, frequency, FcCO2(CH2)7SH; K3Fe(CN)6

Electrochemical Characteristics of a 7-Ferrocenyl(carbonyloxy)-1- Heptanethiol-Modified Gold Electrode

Keywords:

Electrochemical quartz crystal microbalance (EQCM), surface coverage, frequency, FcCO2(CH2)7SH; K3Fe(CN)6,

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A. Kumar and G.M. Whitesides. Science, 263, 60 (1994).
K.S. Weber and S.E. Creager. J. Electroanal. Chem. 445, 17 (1998).
A. Ulman. “An Introduction to Ultrathin Organic Films from Langmuir-Blodgett to Self-Assembly” Academic Press, New York (1991).
R.G. Nuzzo and D.L. Allara. J. Am. Chem. Soc. 105, 4481 (1983).
M.D. Porter, T.B. Bright, D.L. Allara and C.E.D. Chidsey. J. Am. Chem. Soc. 109, 3559 (1987).
H.O. Finklea , S. Avery, M. Lynch a nd T. Furtsch. Langmuir 3, 409 (1987).
C.D. Bain, E.B. Troughton, Y.T. Tao, J. Evall, G.M. Whitesides and R.G. Nuzzo. J. Am. Chem. Soc. 111, (1989).
M.M. Walczak, C. Chung, S.M. Stole, C.L. Widrig and M.D. Porter. J. Am. Chem. Soc. 113, 2370 (1991).
C.A. Widrig, C. Chung and M.D. Porter. J. Electroanal. Chem. 310, 335 (1991).
C.D. Bain, E.B. Troughton and G.M. Whitesides. J. Am. Chem. Soc. 111, 7155 (1989).
C.E.D. Chidsey, C.R. Betozi, T.M. Putvinski and A.M. Mujsce. J. Am. Chem. Soc. 112, 4301 (1990).
K. Uosaki, Y. Sato and H. Kita. Langmuir 7, 1510 (1991).
J.J. Hickman, D. Ofer, C. Zou, M.S. Wrighton, P.E. Laibinis and G.M. Whitesides. J. Am. Chem. Soc. 113, (1991).
G.K. Rowe and S.E. Creager. Langmuir 7, 2307 (1991).
D.M. Collard and M.A. Fox. Langmuir 7, 1192 (1991).
K. Shimazu, I. Yagi, Y. Sato and K. Uosaki. Langmuir 8, 1385 (1992).
Y. Sato, H. Itoigawa and K. Uosaki. Bull. Chem. Soc. Jpn. 66, 1032 (1993).
Y. Sato, B.L. Frey, R.M. Corn and K. Uosaki. Bull. Chem. Soc. Jpn. 67, 21 (1994).
K. Shimazu, I. Yagi, Y. Sato and K. Uosaki. J. Electroanal. Chem. 372, 117 (1994).
T. Ohtsuka, Y. Sato and K. Uosaki. Langmuir 10, 3658 (1994).
K Shimazu, S. Ye, Y. Sato and K. Uosaki. J. Electroanal. Chem. 375, 409 (1994).
G.K. Rowe and S.E. Creager. Langmuir 10, 1186 (1994).
D. Stephen, O’Connor, T. Gary, Olsen and S.E. Creager, J. Electroanal. Chem, 466, 197 (1999).
H.C. De Long, I.J. Donohue and D.A. Buttry. Langmuir 7, 2196 (1991).
S.E. Creager and G.K. Rowe. Anal. Chem. Acta 246, 233 (1991).
H.C. De Long, I.J. Donohue and D.A. Buttry. Langmuir 7, 2196 (1991).
S. Ikeda and N. Oyama. Anal. Chem. 65, 1910 (1993).
M. Shin, E.Y. Kim, I. Kwak and I.C. Jeon. J. Electroanal. Chem. 394, 87 (1995).
A.R. Hillman and A. Glidle. J. Electroanal. Chem. 379, 365, (1994).
K. Ma ninusz, E. Czirok a nd G. Inzelt. J. Electroanal. Chem. 379, 437 (1994).
T. Tj¨arnhage, B. Sk˚arman, B.L. Sethson and M. Sharp. Electrochim. Acta 41, 367 (1996).
Y. Okahata, Y. Matsunobu, K. Ijiro, M. Mukae, A. Murakami and K. Makino. J. Am. Chem. Soc. 114, (1992).
S. Yamaguchi, T. Shimomura, T. Tatsuma and N. Oyama. Anal. Chem. 65, 1925 (1993).
Y. Okahata, K. Ijiro and Y. Matsuzaki. Langmuir 9, 19 (1993).
X.H. Xu, H.C. Yang, T.E. Mallouk and A.J. Bard. J. Am. Chem. Soc. 116, 116 (1994).
X.H. Xu and A.J. Bard. J. Am. Chem. Soc. 117, 2627 (1995).
G.G. Guilbault and B. Hock. Anal. Lett. 28, 749 (1995).
C.D. Evans, I. Nicic and I.Q. Chambers. Electrochim. Acta 40, 2611 (1995).
M. Watanabe, H. Uchida and N. Ikeda. J. Electroanal. Chem. 380, 255 (1995).
M. Watanabe, H. Uchida, M. Miura and N. Ikeda. J. Electroanal. Chem. 384, 191 (1995).
H.C. De Long, I.J. Donohue and D.A. Buttry. Langmuir 7, 2196 (1991).
J.J. Donohue and D.A. Buttry. Langmuir 5, 671 (1989).
L.L. Nordyke and D.A. Buttry. Langmuir 7, 380 (1991).
C. Frubose and K. Dobihofer. J. Chem. Soc. Faraday Trans. 91, 1949 (1995).
Y. Sato and K. Uosaki, in: F.A. Schultz, I. Taniguchi (Eds.), “Redox Mechanisms and Interfacial Prop- erties of Molecules of Biological Importance”, ECS PV 93-11, 1993.
C.E.D. Chidsey, C.R. Betozi, T.M. Putvinski and A.M. Mujsce. J. Am. Chem. Soc. 112, 4301 (1990).