Authors
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Omelchenko, O. ; Tomsik, E. ; Zhigunov, A. ; Guskova, O. ; Gribkova, O. ; Gospodinova, N.
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Title
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J-like supramolecular assemblies of polyaniline in water
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Date
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09.12.2013
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Number
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39183
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Abstract
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The consideration of polyaniline (PANI) as a supramolecular assembly similar to J-aggregates of dyes is proposed. Fibrils with a length of more than 100 nm and a diameter of about 4 nm are formed in water during aniline polymerization, as shown by small-angle X-ray scattering. Long-wavelength absorption of the fibrils, red-shifted with respect to highly crystalline PANI film supports the idea about the formation of J-aggregates. Their formation, similar to dyes, is promoted by the addition of a sulfonated polyelectrolyte and becomes more pronounced with an increase of the molar mass of the polyelectrolyte. Self-organization of aniline oligomers in a polar environment is confirmed by atomistic molecular dynamics simulations.
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Publisher
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Macromolecular Rapid Communications
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Wikidata
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Citation
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Macromolecular Rapid Communications 214 (2013) 2739-2743
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DOI
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https://doi.org/10.1002/macp.201300429
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Tags
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conjugated polymers j-aggregates molecular dynamics polyaniline small-angle x-ray scattering
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