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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1021/la201106r
|2 doi
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|a pubmed24n0696.xml
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|a (DE-627)NLM208677372
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|a (NLM)21619015
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Ladhari, Nadia
|e verfasserin
|4 aut
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|a Reactive layer-by-layer deposition of poly(ethylene imine) and a precursor of TiO2
|b influence of the sodium chloride concentration on the film growth, interaction with hexacyanoferrate anions, and particle distribution in the film
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|c 2011
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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 28.09.2011
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|a Date Revised 19.11.2015
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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 Films prepared according to a layer-by-layer (LBL) manner find increasing importance in many applications such as coatings with dedicated optical or electronic properties, particularly when including nanomaterials. An alternative way to prepare such hybrid layer-by-layer coatings is to perform sol-gel chemistry in a layer-by-layer manner. In this article, we highlight the importance of the NaCl concentration as a parameter to control the growth as well as the properties of LBL films made from poly(ethylene imine) as the organic counterpart and titanium IV (bisammoniumlactato)dihydroxyde ([Ti(lac)(2)(OH)(2)](2-)) as the precursor of TiO(2). An increase in the sodium chloride concentration leads to the faster growth of the film and to a decrease in the number of hexacyanoferrate anions remaining in the film after a buffer rinse. This may be due to a progressive increase in the fraction of negatively charged TiO(2) as suggested by transmission electron microscopy. In the presence of 0.5 M NaCl, the fraction of TiO(2) is close to 60% in mass. As a surprising finding, the films produced from 0.15 M NaCl are not homogeneously filled with TiO(2) even if the film is produced in an LBL fashion. The increased concentration of TiO(2) at the film-solution interface could constitute a barrier for the incorporation of the negatively charged redox probe
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|a Journal Article
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|a Anions
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|a Ferrocyanides
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|a ferrocyn
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|a titanium dioxide
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|a 15FIX9V2JP
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|a Sodium Chloride
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|a 451W47IQ8X
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|a Polyethyleneimine
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|a 9002-98-6
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|a Titanium
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|a D1JT611TNE
|2 NLM
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|a Ringwald, Christian
|e verfasserin
|4 aut
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|a Ersen, Ovidiu
|e verfasserin
|4 aut
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|a Florea, Ileana
|e verfasserin
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|a Hemmerlé, Joseph
|e verfasserin
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|a Ball, Vincent
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 27(2011), 12 vom: 21. Juni, Seite 7934-43
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g volume:27
|g year:2011
|g number:12
|g day:21
|g month:06
|g pages:7934-43
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|u http://dx.doi.org/10.1021/la201106r
|3 Volltext
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