Abstract
A very small amount of sulfide impurity in 4-pyridinethiol (4-PySH) modifier solution was found to interfere with the proper formation of the 4-PySH modified surface for cytochrome c electrochemistry on an Au(111) electrode. When the modification was conducted in an alkaline (e.g. 0.1 M KOH) solution, in aqueous solutions under applying a potential more positive than 0.3 V vs. Ag/AgCl, or at a low modifier concentration (e.g. 20 μM), the proper 4-PySH modified surface was obtained even using 4-PySH as received, which contained a small amount of sulfide. The selective adsorption of 4-PySH in the presence of a small amount of sulfide under these conditions was due to the rapid formation of proper 4-PySH modified surface, which prevented the sulfide from reacting with the electrode surface.
| Original language | English |
|---|---|
| Pages (from-to) | 2843-2853 |
| Number of pages | 11 |
| Journal | Electrochimica Acta |
| Volume | 45 |
| Issue number | 18 |
| DOIs | |
| Publication status | Published - Jun 9 2000 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Chemical Engineering(all)
- Analytical Chemistry
- Electrochemistry
Cite this
Simple methods for preparation of a well-defined 4-pyridinethiol modified surface on Au(111) electrodes for cytochrome c electrochemistry. / Taniguchi, Isao; Yoshimoto, Soichiro; Yoshida, Masahito; Kobayashi, Shun Ichi; Miyawaki, Toshifumi; Aono, Yutaka; Sunatsuki, Yukinari; Taira, Hideo.
In: Electrochimica Acta, Vol. 45, No. 18, 09.06.2000, p. 2843-2853.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Simple methods for preparation of a well-defined 4-pyridinethiol modified surface on Au(111) electrodes for cytochrome c electrochemistry
AU - Taniguchi, Isao
AU - Yoshimoto, Soichiro
AU - Yoshida, Masahito
AU - Kobayashi, Shun Ichi
AU - Miyawaki, Toshifumi
AU - Aono, Yutaka
AU - Sunatsuki, Yukinari
AU - Taira, Hideo
PY - 2000/6/9
Y1 - 2000/6/9
N2 - A very small amount of sulfide impurity in 4-pyridinethiol (4-PySH) modifier solution was found to interfere with the proper formation of the 4-PySH modified surface for cytochrome c electrochemistry on an Au(111) electrode. When the modification was conducted in an alkaline (e.g. 0.1 M KOH) solution, in aqueous solutions under applying a potential more positive than 0.3 V vs. Ag/AgCl, or at a low modifier concentration (e.g. 20 μM), the proper 4-PySH modified surface was obtained even using 4-PySH as received, which contained a small amount of sulfide. The selective adsorption of 4-PySH in the presence of a small amount of sulfide under these conditions was due to the rapid formation of proper 4-PySH modified surface, which prevented the sulfide from reacting with the electrode surface.
AB - A very small amount of sulfide impurity in 4-pyridinethiol (4-PySH) modifier solution was found to interfere with the proper formation of the 4-PySH modified surface for cytochrome c electrochemistry on an Au(111) electrode. When the modification was conducted in an alkaline (e.g. 0.1 M KOH) solution, in aqueous solutions under applying a potential more positive than 0.3 V vs. Ag/AgCl, or at a low modifier concentration (e.g. 20 μM), the proper 4-PySH modified surface was obtained even using 4-PySH as received, which contained a small amount of sulfide. The selective adsorption of 4-PySH in the presence of a small amount of sulfide under these conditions was due to the rapid formation of proper 4-PySH modified surface, which prevented the sulfide from reacting with the electrode surface.
UR - http://www.scopus.com/inward/record.url?scp=0033708017&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033708017&partnerID=8YFLogxK
U2 - 10.1016/S0013-4686(00)00358-3
DO - 10.1016/S0013-4686(00)00358-3
M3 - Article
AN - SCOPUS:0033708017
VL - 45
SP - 2843
EP - 2853
JO - Electrochimica Acta
JF - Electrochimica Acta
SN - 0013-4686
IS - 18
ER -