Impediment to heterogeneous electron transfer reactions of redox-active species by alkanedithiol self-assembled monolayers with and without an adlayer of au nanoparticles
文献类型：期刊论文
| 作者 | Yang, ML; Zhang, ZJ |
| 刊名 | Electrochimica acta
 |
| 出版日期 | 2004-11-01 |
| 卷号 | 49期号:28页码:5089-5095 |
| 关键词 | Alkanedithiol Sam Voltammetry Qcm Au nanoparticles |
| ISSN号 | 0013-4686 |
| DOI | 10.1016/j.electacta.2004.06.020 |
| 通讯作者 | Zhang, zj() |
| 英文摘要 | The impediment of heterogeneous electron transfer (et) reactions of several electroactive species by alkanedithiol self-assembled monolayers (sams) and those covered with au nanoparticles was investigated. it was found that, when densely packed 1,6-hexanedithiol and 1,9-nonanedithiol sams were formed with and without adsorbed gold nanoparticles, fe(cn)(6)(3-) reduction became extremely sluggish. the attachment of au nanoparticles does not appear to improve the electronic communication between the solution species and the underlying au electrode surface. on the other hand, ru(nh3)(6)(3+) and ferrocenecarboxylic acid both exhibited quasi-reversible redox waves at these surfaces. the variation of impediment were attributed to the different electron transfer mechanisms for these redox species. the adsorption of au nanoparticles onto alkanedithiol sams was estimated by flow injection quartz crystal microbalance (fi-qcm), showing a rapid adsorption process. amounts of au nanoparticles did not vary between the two different alkanedithiols. finally, we quantified the adsorption of an nanoparticles at the qcm crystal modified with a 1,9-nonanedithiol sam in air. a surface coverage of 2.56% was obtained. (c) 2004 elsevier ltd. all rights reserved. |
| WOS关键词 | GOLD ELECTRODES ; ALKANETHIOL MONOLAYERS ; COLLOID MONOLAYERS ; MERCURY-ELECTRODES ; TRANSFER KINETICS ; SURFACES ; FILMS ; OCTADECANETHIOL ; ADSORPTION ; ULTRAMICROELECTRODES |
| WOS研究方向 | Electrochemistry |
| WOS类目 | Electrochemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000224945700006 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2376791 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zhang, ZJ |
| 作者单位 | Chinese Acad Sci, Grad Sch, Dept Chem, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, ML,Zhang, ZJ. Impediment to heterogeneous electron transfer reactions of redox-active species by alkanedithiol self-assembled monolayers with and without an adlayer of au nanoparticles[J]. Electrochimica acta,2004,49(28):5089-5095. |
| APA | Yang, ML,&Zhang, ZJ.(2004).Impediment to heterogeneous electron transfer reactions of redox-active species by alkanedithiol self-assembled monolayers with and without an adlayer of au nanoparticles.Electrochimica acta,49(28),5089-5095. |
| MLA | Yang, ML,et al."Impediment to heterogeneous electron transfer reactions of redox-active species by alkanedithiol self-assembled monolayers with and without an adlayer of au nanoparticles".Electrochimica acta 49.28(2004):5089-5095. |
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来源：中国科学院大学
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