Effect of template type on the preparation of the emeraldine salt form of polyaniline (PANI-ES) with horseradish peroxidase isoenzyme C (HRPC) and hydrogen peroxide

Tomoyuki Fujisaki; Keita Kashima; Sandra Serrano-Luginbühl; Reinhard Kissner; Danica Bajuk-Bogdanović; Maja Milojević-Rakić; Gordana Ćirić-Marjanović; Stephan Busato; Erlantz Lizundia; Peter Walde

doi:10.1039/C9RA06168A

Effect of template type on the preparation of the emeraldine salt form of polyaniline (PANI-ES) with horseradish peroxidase isoenzyme C (HRPC) and hydrogen peroxide†

Tomoyuki Fujisaki,

^ab Keita Kashima,

^ab Sandra Serrano-Luginbühl,^a Reinhard Kissner,

^c Danica Bajuk-Bogdanović,

^d Maja Milojević-Rakić,^d Gordana Ćirić-Marjanović,

^d Stephan Busato,

^e Erlantz Lizundia

^afg and Peter Walde

*^a

Author affiliations

* Corresponding authors

^a Department of Materials, Laboratory for Multifunctional Materials, ETH Zurich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland
E-mail: peter.walde@mat.ethz.ch

^b Department of Materials Chemistry and Bioengineering, National Institute of Technology, Oyama College, 771 Ohaza-Nakakuki, Oyama, Tochigi 323-0806, Japan

^c Department of Chemistry and Applied Biosciences, Laboratory of Inorganic Chemistry, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland

^d Faculty for Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia

^e Department of Materials, Laboratory for Soft Materials, ETH Zurich, Vladimir-Prelog-Weg 5, 8093 Zürich, Switzerland

^f Department of Graphic Design and Engineering Projects, Bilbao Faculty of Engineering, University of the Basque Country (UPV/EHU), Bilbao 48103, Spain

^g BCMaterials, Basque Center for Materials, Applications and Nanostructures, UPV/EHU Science Park, 48940 Leioa, Spain

Abstract

Horseradish peroxidase isoenzyme C (HRPC) is often used as catalyst for the preparation of the conductive emeraldine salt form of polyaniline (PANI-ES) from aniline and hydrogen peroxide (H₂O₂) in the presence of anionic templates in aqueous solution. Here, a direct comparison of three types of soft templates was made, (i) the sodium salt of sulfonated polystyrene (SPS), (ii) micelles from sodium dodecylbenzenesulfonate (SDBS), and (iii) vesicles from either a 1 : 1 molar mixture of SDBS and decanoic acid or from AOT (sodium bis(2-ethylhexyl)sulfosuccinate). Based on UV/vis/NIR, EPR and Raman spectroscopy measurements all three types of templates are similarly suitable, with advantages of the two vesicle systems in terms of aniline conversion degree and radical content in the final PANI-ES product. First experiments with sulfated cellulose nanocrystals (CNCs) indicate that they are promising rigid templates for the preparation of electroconductive PANI-ES-coated cellulose materials or devices.

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Effect of template type on the preparation of the emeraldine salt form of polyaniline (PANI-ES) with horseradish peroxidase isoenzyme C (HRPC) and hydrogen peroxide†

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Effect of template type on the preparation of the emeraldine salt form of polyaniline (PANI-ES) with horseradish peroxidase isoenzyme C (HRPC) and hydrogen peroxide

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