Self-assembled monolayer of polyoxometalate on gold surfaces: Quartz crystal microbalance, electrochemistry, and in-situ scanning tunneling microscopy study
文献类型：期刊论文
| 作者 | Tang ZY ; Liu SQ ; Wang EK ; Dong SJ |
| 刊名 | langmuir
 |
| 出版日期 | 2000 |
| 卷号 | 16期号:11页码:4946-4952 |
| 关键词 | CHEMICALLY MODIFIED ELECTRODES SODIUM DECATUNGSTOCERATE IV SULFUR-CONTAINING MOLECULES ATOMIC-FORCE MICROSCOPY ORGANIC-SURFACES STRUCTURAL CHARACTERIZATION INFRARED-SPECTROSCOPY THIOL MONOLAYERS ANION ADSORPTION SINGLE-CRYSTAL |
| ISSN号 | 0743-7463 |
| 通讯作者 | wang ek |
| 中文摘要 | a new kind of inorganic self-assembled monolayer (sam) was prepared by spontaneous adsorption of polyoxometalate anion, asmo11vo404-, onto a gold surface from acidic aqueous solution. the adsorption process, structure, and electrochemical properties of the asmo11vo404- sam were investigated by quartz crystal microbalance (qcm), electrochemistry, and scanning tunneling microscopy (stm). the qcm data suggested that the self-assembling process could be described in terms of the langmuir adsorption model, providing the value of the free energy of adsorption at -20 kj mol(-1). the maximum surface coverage of the asmo11vo404- sam on gold surface was determined from the qcm data to be 1.7 x 10(-10) mol cm(-2), corresponding to a close-packed monolayer of asmo11vo404- anion. the analysis of the voltammograms of the asmo11vo404- sam on gold electrode showed three pairs of reversible peaks with an equal surface coverage of 1.78 x 10(-10) mol cm(-2) for each of the peaks, and the value was agreed well with the qcm data. in-situ stm image demonstrated that the asmo11vo404- sam was very uniform and no aggregates or multilayer could be observed. furthermore, the high-resolution stm images revealed that the asmo11vo404- sam on au(lll) surface was composed of square unit cells with a lattice space of 10-11 angstrom at +0.7 v (vs ag\agcl). the value was quite close to the diameter of asmo11vo404- anion obtained from x-ray crystallographic study. the surface coverage of the asmo11vo404- sam on gold electrode estimated from the stm image was around 1.8 x 10(-10) mol cm(-2), which was consistent with the qcm and electrochemical results. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000087304100030 |
| 公开日期 | 2010-11-04 |
| 源URL | [http://202.98.16.49/handle/322003/19733]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Tang ZY,Liu SQ,Wang EK,et al. Self-assembled monolayer of polyoxometalate on gold surfaces: Quartz crystal microbalance, electrochemistry, and in-situ scanning tunneling microscopy study[J]. langmuir,2000,16(11):4946-4952. |
| APA | Tang ZY,Liu SQ,Wang EK,&Dong SJ.(2000).Self-assembled monolayer of polyoxometalate on gold surfaces: Quartz crystal microbalance, electrochemistry, and in-situ scanning tunneling microscopy study.langmuir,16(11),4946-4952. |
| MLA | Tang ZY,et al."Self-assembled monolayer of polyoxometalate on gold surfaces: Quartz crystal microbalance, electrochemistry, and in-situ scanning tunneling microscopy study".langmuir 16.11(2000):4946-4952. |
入库方式： OAI收割
来源：长春应用化学研究所
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