Studies on kinetics of different types of probing species through self-assembled monolayers on a gold electrode by SECM
文献类型：期刊论文
| 作者 | Chen Zhong; Shen Li; Xie Shu-Bao; He Sha-Li; Jing Ping; Xu Xiao-Dong; Shao Yuan-Hua |
| 刊名 | CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
 |
| 出版日期 | 2008-04-10 |
| 卷号 | 29期号:4页码:700-704 |
| 关键词 | Self-assembled Monolayer Et kinEtics Across The Sams Scanning Electrochemical Microscopy Nnn ' n '-tetramethyl-p-phenylenediamine |
| ISSN号 | 0251-0790 |
| 英文摘要 | In this paper, the kinetic behavior of mediators with different polarities at n-alkanethiol modified gold electrode are investigated by scanning electrochemical microscopy (SECM). Ferrocyanide [K4Fe(CN)(6)] and N,N,N',N'-tetramethyl-p-phenylenediamine(TMPD) are employed as the mediators, and the self-assembled monolayers (SAMs) act as a better blocking barrier for the transport of ferrocyanide than that of TMPD. This difference is mainly because of the better permeation of TMPD into the hydrophobic monolayers. A simple model is applied to extract the kinetic rate constants of the permeation step. On the basis of the kinetic rate constants obtained, we can deduce that the equilibriums exist before and after the electronic transfer (ET) when using TMPD, and the apparent kinetic constant is larger than ferrocyanide in this step. The tunneling decay constant of the TMPD in the SAMs, beta, can be measured to be equal to 1.2 per methylene group. |
| 语种 | 英语 |
| WOS记录号 | WOS:000255101400009 |
| 出版者 | HIGHER EDUCATION PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/63913]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Shao Yuan-Hua |
| 作者单位 | Peking Univ, Coll Chem & Mol Engn, Inst Analyt Chem, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen Zhong,Shen Li,Xie Shu-Bao,et al. Studies on kinetics of different types of probing species through self-assembled monolayers on a gold electrode by SECM[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2008,29(4):700-704. |
| APA | Chen Zhong.,Shen Li.,Xie Shu-Bao.,He Sha-Li.,Jing Ping.,...&Shao Yuan-Hua.(2008).Studies on kinetics of different types of probing species through self-assembled monolayers on a gold electrode by SECM.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,29(4),700-704. |
| MLA | Chen Zhong,et al."Studies on kinetics of different types of probing species through self-assembled monolayers on a gold electrode by SECM".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 29.4(2008):700-704. |
入库方式： OAI收割
来源：化学研究所
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