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231224s2012 xx |||||o 00| ||eng c |
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|a 10.1021/la301254a
|2 doi
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|a pubmed24n0726.xml
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|a (NLM)22594657
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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|a de Saint-Aubin, Christine
|e verfasserin
|4 aut
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|a New 2-in-1 polyelectrolyte step-by-step film buildup without solution alternation
|b from PEDOT-PSS to polyelectrolyte complexes
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|c 2012
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 04.10.2012
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|a Date Revised 09.12.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Although never emphasized and increasingly used in organic electronics, PEDOT-PSS (poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate)) layer-by-layer (lbl) film construction violates the alternation of polyanion and polycation rule stated as a prerequisit for a step-by-step film buildup. To demonstrate that this alternation is not always necessary, we studied the step-by-step construction of films using a single solution containing polycation/polyanion complexes. We investigated four different systems: PEDOT-PSS, bPEI-PSS (branched poly(ethylene imine)-poly(sodium 4-styrene sulfonate)), PDADMA-PSS (poly(diallyl dimethyl ammonium)-PSS), and PAH-PSS (poly(allylamine hydrochloride)-PSS). The film buildup obtained by spin-coating or dipping-and-drying process was monitored by ellipsometry, UV-vis-NIR spectrophotometry, and quartz-crystal microbalance. The surface morphology of the films was characterized by atomic force microscopy in tapping mode. After an initial transient regime, the different films have a linear buildup with the number of deposition steps. It appears that, when the particles composed of polyanion-polycation complex and complex aggregates in solution are more or less liquid (case of PEDOT-PSS and bPEI-PSS), our method leads to smooth films (roughness on the order of 1-2 nm). On the other hand, when these complexes are more or less solid particles (case of PDADMA-PSS and PAH-PSS), the resulting films are much rougher (typically 10 nm). Polycation/polyanion molar ratios in monomer unit of the liquid, rinsing, and drying steps are key parameters governing the film buildup process with an optimal polycation/polyanion molar ratio leading to the fastest film growth. This new and general lbl method, designated as 2-in-1 method, allows obtaining regular and controlled film buildup with a single liquid containing polyelectrolyte complexes and opens a new route for surface functionalization with polyelectrolytes
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Polyamines
|2 NLM
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|a Polyelectrolytes
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|a Polymers
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|a Polystyrenes
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|a Solutions
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|a Thiophenes
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|a poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)
|2 NLM
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|a polyanions
|2 NLM
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|a polycations
|2 NLM
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|a Hemmerlé, Joseph
|e verfasserin
|4 aut
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|a Boulmedais, Fouzia
|e verfasserin
|4 aut
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|a Vallat, Marie-France
|e verfasserin
|4 aut
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|a Nardin, Michel
|e verfasserin
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|a Schaaf, Pierre
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 28(2012), 23 vom: 12. Juni, Seite 8681-91
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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|g volume:28
|g year:2012
|g number:23
|g day:12
|g month:06
|g pages:8681-91
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|u http://dx.doi.org/10.1021/la301254a
|3 Volltext
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