Tunable synthesis of Prussian Blue in exponentially growing polyelectrolyte multilayer films

Polyelectrolyte multilayer (PEM) films have become very popular for surface functionalization and the design of functional architectures such as hollow polyelectrolyte capsules. It is known that properties such as permeability to small ionic solutes are strongly dependent on the buildup regime of th...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 25(2009), 24 vom: 15. Dez., Seite 14030-6
1. Verfasser: Laugel, Nicolas (VerfasserIn)
Weitere Verfasser: Boulmedais, Fouzia, El Haitami, Alae E, Rabu, Pierre, Rogez, Guillaume, Voegel, Jean-Claude, Schaaf, Pierre, Ball, Vincent
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2009
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Electrolytes Ferrocyanides Ions Membranes, Artificial Polymers ferric ferrocyanide TLE294X33A
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245 1 0 |a Tunable synthesis of Prussian Blue in exponentially growing polyelectrolyte multilayer films 
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520 |a Polyelectrolyte multilayer (PEM) films have become very popular for surface functionalization and the design of functional architectures such as hollow polyelectrolyte capsules. It is known that properties such as permeability to small ionic solutes are strongly dependent on the buildup regime of the PEM films. This permeability can be modified by tuning the ionization degree of the polycations or polyanions, provided the film is made from weak polyelectrolytes. In most previous investigations, this was achieved by playing on the solution pH either during the film buildup or by a postbuildup pH modification. Herein we investigate the functionalization of poly(allylamine hydrochloride)/poly(glutamic acid) (PAH/PGA) multilayers by ferrocyanide and Prussian Blue (PB). We demonstrate that dynamic exchange processes between the film and polyelectrolyte solutions containing one of the component polyelectrolyte allow one to modify its Donnan potential and, as a consequence, the amount of ferrocyanide anions able to be retained in the PAH/PGA film. This ability of the film to be a tunable reservoir of ferrocyanide anions is then used to produce a composite film containing PB particles obtained by a single precipitation reaction with a solution containing Fe(3+) cations in contact with the film. The presence of PB in the PEM films then provides magnetic as well as electrochemical properties to the whole architecture 
650 4 |a Journal Article 
650 7 |a Electrolytes  |2 NLM 
650 7 |a Ferrocyanides  |2 NLM 
650 7 |a Ions  |2 NLM 
650 7 |a Membranes, Artificial  |2 NLM 
650 7 |a Polymers  |2 NLM 
650 7 |a ferric ferrocyanide  |2 NLM 
650 7 |a TLE294X33A  |2 NLM 
700 1 |a Boulmedais, Fouzia  |e verfasserin  |4 aut 
700 1 |a El Haitami, Alae E  |e verfasserin  |4 aut 
700 1 |a Rabu, Pierre  |e verfasserin  |4 aut 
700 1 |a Rogez, Guillaume  |e verfasserin  |4 aut 
700 1 |a Voegel, Jean-Claude  |e verfasserin  |4 aut 
700 1 |a Schaaf, Pierre  |e verfasserin  |4 aut 
700 1 |a Ball, Vincent  |e verfasserin  |4 aut 
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773 1 8 |g volume:25  |g year:2009  |g number:24  |g day:15  |g month:12  |g pages:14030-6 
856 4 0 |u http://dx.doi.org/10.1021/la901479z  |3 Volltext 
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