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231223s2007 xx ||||| 00| ||eng c |
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|a DE-627
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|a eng
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|a Montague, Matthew
|e verfasserin
|4 aut
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|a Fabrication of biomolecular nanostructures by scanning near-field photolithography of oligo(ethylene glycol)-terminated self-assembled monolayers
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|c 2007
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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 03.08.2007
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|a Date Revised 01.12.2018
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a The UV photo-oxidation of oligo(ethylene glycol) (OEG)-terminated self-assembled monolayers (SAMs) has been studied using static secondary ion mass spectrometry, X-ray photoelectron spectroscopy, contact angle measurement, and friction force microscopy. OEG-terminated SAMs are oxidized to yield sulfonates, but photodegradation of the OEG chain also occurs on a more rapid time scale, yielding degradation products that remain bound to the surface via gold-sulfur bonds. The oxidation of these degradation products is the rate-limiting step in the process. Photopatterning of OEG-terminated SAMs may be accomplished by using a mask and suitable light source or by using scanning near-field photolithography (SNP) in which the mask is replaced by a scanning near-field optical microscope coupled to a UV laser. Using SNP, it is possible to fabricate patterns in SAMs with a full width at half-maximum height (fwhm) as small as 9 nm, which is approximately 15 times smaller than the conventional diffraction limit. SNP-patterned OEG-terminated SAMs may be used to fabricate protein nanopatterns. By adsorbing carboxylic acid-terminated thiols into oxidized regions and converting these to active ester intermediates, it has been possible to fabricate lines of protein molecules with widths of only a few tens of nanometers
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Sulfhydryl Compounds
|2 NLM
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|a Polyethylene Glycols
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|a 3WJQ0SDW1A
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|a Gold
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|a 7440-57-5
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|a Ducker, Robert E
|e verfasserin
|4 aut
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|a Chong, Karen S L
|e verfasserin
|4 aut
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|a Manning, Robert J
|e verfasserin
|4 aut
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|a Rutten, Frank J M
|e verfasserin
|4 aut
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|a Davies, Martyn C
|e verfasserin
|4 aut
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|a Leggett, Graham J
|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 1985
|g 23(2007), 13 vom: 19. Juni, Seite 7328-37
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnas
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| 773 |
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|g volume:23
|g year:2007
|g number:13
|g day:19
|g month:06
|g pages:7328-37
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