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231223s2005 xx ||||| 00| ||eng c |
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|a pubmed24n0525.xml
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|a (DE-627)NLM157331946
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|a (NLM)16114923
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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1 |
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|a Shaporenko, A
|e verfasserin
|4 aut
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|a Self-assembled monolayers of semifluorinated alkaneselenolates on noble metal substrates
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|c 2005
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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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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 20.03.2007
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|a Date Revised 23.08.2005
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Self-assembled monolayers (SAMs) formed from semifluorinated dialkyldiselenol (CF(3)(CF(2))(5)(CH(2))(2)Se-)(2) (F6H2SeSeH2F6) on polycrystalline Au(111) and Ag(111) were characterized by high-resolution X-ray photoelectron spectroscopy, infrared reflection absorption spectroscopy, near edge X-ray absorption fine structure spectroscopy, scanning tunneling microscopy, and contact angle measurements. The Se-Se linkage of F6H2SeSeH2F6 was found to be cleaved upon the adsorption, followed by the formation of selenolate-metal bond. The resulting F6H2Se SAMs are well-ordered, densely packed, and contamination-free. The packing density of these films is governed by the bulky fluorocarbon part, which exhibits the expected helical conformation. A noncommensurate hexagonal arrangement of the F6H2Se molecules with an average nearest-neighbor spacing of about 5.8 +/- 0.2 A, close to the van der Waals diameter the fluorocarbon chain, was observed on Au(111). The orientation of the fluorocarbon chains in the F6H2Se SAMs does not depend on the substrate-the average tilt angle of these moieties was estimated to be about 21-22 degrees on both Au and Ag
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|a Journal Article
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|a Cyganik, P
|e verfasserin
|4 aut
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|a Buck, M
|e verfasserin
|4 aut
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|a Ulman, A
|e verfasserin
|4 aut
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|a Zharnikov, M
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 21(2005), 18 vom: 30. Aug., Seite 8204-13
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:21
|g year:2005
|g number:18
|g day:30
|g month:08
|g pages:8204-13
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|d 21
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