Adsorbed structures of 4,4 '-bipyridine on Cu(111) in acid studied by STM and IR
文献类型：期刊论文
| 作者 | Diao, YX; Han, MJ; Wan, LJ; Itaya, K; Uchida, T; Miyake, H; Yamakata, A; Osawa, M |
| 刊名 | LANGMUIR
 |
| 出版日期 | 2006-04-11 |
| 卷号 | 22期号:8页码:3640-3646 |
| ISSN号 | 0743-7463 |
| DOI | 10.1021/la052765w |
| 英文摘要 | The adsorption of 4,4'-bipyridine (BiPy) on Cu(111) has been investigated in 0.1 M HClO4 by cyclic voltammetry, electrochemical scanning tunneling microscopy (STM), and surface-enhanced infrared adsorption spectroscopy (SEIRAS). Cyclic voltammetry showed the double layer region extending from -0.2 to 0.26 V and a pair of redox waves superposing on hydrogen evolution wave at more negative potentials. Diprotonated BiPy, BiPyH22+, is adsorbed flat on the Cu(111) (1 x 1) surface and forms a well-ordered monolayer with a (3 x 4) symmetry in the double-layer potential region. At more negative potential, BiPyH22+ is reduced to its monocation radical, BiPyH2 center dot+, and forms another well-ordered structure in which the radicals are stacked in molecular rows with a face-to-face self-dimer as the building unit. The SEIRA spectra of both BiPyH22+ and BiPyH2 center dot+ are dominated by gerade modes which should be IR-inactive for the centrosymmetric species. The breakdown of the selection rule of IR absorption is ascribed to the vibronic coupling associated with charge transfer between BiPyH22+ and the surface and between the radicals. |
| 语种 | 英语 |
| WOS记录号 | WOS:000236745700033 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/58949]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wan, LJ |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China 2.Tohoku Univ, Grad Sch Engn, Dept Appl Chem, Sendai, Miyagi 9808579, Japan 3.Hokkaido Univ, Ctr Catalysis Res, Sapporo, Hokkaido 0010021, Japan |
| 推荐引用方式 GB/T 7714 | Diao, YX,Han, MJ,Wan, LJ,et al. Adsorbed structures of 4,4 '-bipyridine on Cu(111) in acid studied by STM and IR[J]. LANGMUIR,2006,22(8):3640-3646. |
| APA | Diao, YX.,Han, MJ.,Wan, LJ.,Itaya, K.,Uchida, T.,...&Osawa, M.(2006).Adsorbed structures of 4,4 '-bipyridine on Cu(111) in acid studied by STM and IR.LANGMUIR,22(8),3640-3646. |
| MLA | Diao, YX,et al."Adsorbed structures of 4,4 '-bipyridine on Cu(111) in acid studied by STM and IR".LANGMUIR 22.8(2006):3640-3646. |
入库方式： OAI收割
来源：化学研究所
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