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231223s2006 xx ||||| 00| ||eng c |
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|a pubmed24n0539.xml
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|a (NLM)16584238
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|a DE-627
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|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Diao, Yu-Xia
|e verfasserin
|4 aut
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| 245 |
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|a Adsorbed structures of 4,4'-bipyridine on Cu(111) in acid studied by STM and IR
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|c 2006
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|b nc
|2 rdacarrier
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|a Date Completed 09.07.2007
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|a Date Revised 04.04.2006
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a 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, BiPyH2(2+), 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, BiPyH2(2+) is reduced to its monocation radical, BiPyH2(*+), 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 BiPyH2(2+) and BiPyH2(*+) 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 BiPyH2(2+) and the surface and between the radicals
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|a Journal Article
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1 |
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|a Han, Mei-Juan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wan, Li-Jun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Itaya, Kingo
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Uchida, Taro
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Miyake, Hiroto
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yamakata, Akira
|e verfasserin
|4 aut
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| 700 |
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|a Osawa, Masatoshi
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 22(2006), 8 vom: 11. Apr., Seite 3640-6
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
8 |
|g volume:22
|g year:2006
|g number:8
|g day:11
|g month:04
|g pages:3640-6
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