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231224s2012 xx |||||o 00| ||eng c |
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|a 10.1021/la203657n
|2 doi
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|a eng
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1 |
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|a Bousquet, Antoine
|e verfasserin
|4 aut
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|a Redox grafting of diazotated anthraquinone as a means of forming thick conducting organic films
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|c 2012
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 01.05.2012
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|a Date Revised 17.01.2012
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2011 American Chemical Society
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|a Thick conductive layers containing anthraquinone moieties are covalently immobilized on gold using redox grafting of the diazonium salt of anthraquinone (i.e., 9,10-dioxo-9,10-dihydroanthracene-1-diazonium tetrafluoroborate). This grafting procedure is based on using consecutive voltammetric sweeping and through this exploiting fast electron transfer reactions that are mediated by the anthraquinone redox moieties in the film. The fast film growth, which is followed by infrared reflection absorption spectroscopy, atomic force microscopy, X-ray photoelectron spectroscopy, ellipsometry, and coverage calculation, results in a mushroom-like structure. In addition to varying the number of sweeps, layer thickness control can easily be exerted through appropriate choice of the switching potential and sweep rate. It is shown that the grafting of the diazonium salt is essentially a diffusion-controlled process but also that desorption of physisorbed material during the sweeping process is essentially for avoiding blocking of the film due to clogging of the electrolyte channels in the film. In general, sweep rates higher than 0.5 V s(-1) are required if thick, porous, and conducting films should be formed
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Anthraquinones
|2 NLM
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|a Azo Compounds
|2 NLM
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1 |
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|a Ceccato, Marcel
|e verfasserin
|4 aut
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|a Hinge, Mogens
|e verfasserin
|4 aut
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|a Pedersen, Steen Uttrup
|e verfasserin
|4 aut
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|a Daasbjerg, Kim
|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 28(2012), 2 vom: 17. Jan., Seite 1267-75
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|x 1520-5827
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|g volume:28
|g year:2012
|g number:2
|g day:17
|g month:01
|g pages:1267-75
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|u http://dx.doi.org/10.1021/la203657n
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