Tracing a Moving Thin-Film Reaction Front with Nanometer Resolution

X-ray standing waves at grazing incidence are used to trace the position of the reactive chain ends of a surface-initiated (via protons in the underlying PEDOT:PSS layer) polymerization in a bulk polymer film, a procedure recently used to realize insoluble functional films for mutlilayer organic lig...

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Published in:Macromolecules 2012-04, Vol.45 (8), p.3487-3495
Main Authors: Köhnen, Anne, Brücher, Martin, Reckmann, Anna, Klesper, Heike, von Bohlen, Alex, Wagner, Ralph, Herdt, Alexej, Lützenkirchen-Hecht, Dirk, Hergenröder, Roland, Meerholz, Klaus
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Language:English
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Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polymers with particular properties
Preparation, kinetics, thermodynamics, mechanism and catalysts
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cited_by cdi_FETCH-LOGICAL-a204t-256310e32fd24a1a75b355ea6dfdd709302779bb660965a6e07b294fbfc9fe823
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container_title Macromolecules
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creator Köhnen, Anne
Brücher, Martin
Reckmann, Anna
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Hergenröder, Roland
Meerholz, Klaus
description X-ray standing waves at grazing incidence are used to trace the position of the reactive chain ends of a surface-initiated (via protons in the underlying PEDOT:PSS layer) polymerization in a bulk polymer film, a procedure recently used to realize insoluble functional films for mutlilayer organic light-emitting diodes. The reactive chain ends as well as their respective counterions are found within a few nanometers thin layer, which moves away from the surface as the reaction proceeds. This reactive front remains narrow for polymerized films that are significantly thicker than the front width. This result can be rationalized by assuming that all oxetane units in contact with the PEDOT:PSS are initiated before the reaction proceeds at elevated temperature.
doi_str_mv 10.1021/ma300204g
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source American Chemical Society:Jisc Collections:American Chemical Society Read & Publish Agreement 2022-2024 (Reading list)
subjects Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polymers with particular properties
Preparation, kinetics, thermodynamics, mechanism and catalysts
title Tracing a Moving Thin-Film Reaction Front with Nanometer Resolution
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