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

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

doi:10.1039/c9ra06168a

Cited by 17 publications

(22 citation statements)

References 62 publications

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“…The formation of products that are rich in PANI-ES r.u. is further supported by the fact that the reaction products produce an EPR spectrum (indication of the presence of unpaired electrons, as expected for the polaron form of PANI-ES) (Junker et al 2012;Fujisaki et al 2019). Moreover, the PANI-ES products remain dispersed (no precipitation), and the chosen aniline concentration is such that the progress of the reaction can easily be followed by in situ UV/Vis/NIR absorption measurements using conventional quartz cells with an optical path length of L = 0.1 cm (Junker et al 2012).…”

Section: Synthesis Of Pani-es From Aniline With Hrpc and H 2 O 2 In The Presence Of Aot Vesicles ("Reference Reaction")mentioning

confidence: 62%

“…The conditions for the "reference reaction" were the ones elaborated before (Junker et al 2012) and already used in various previous investigations (Junker et al 2013;Pašti et al 2017;Fujisaki et al 2019). The reactions were carried out in 2-mL polypropylene Eppendorf tubes.…”

Section: "Reference Reaction": Synthesis Of Pani-es Products From Aniline With Hrpc H 2 O 2 and Aot Vesiclesmentioning

confidence: 99%

“…Moreover, the PANI-ES products remain dispersed (no precipitation), and the chosen aniline concentration is such that the progress of the reaction can easily be followed by in situ UV/Vis/NIR absorption measurements using conventional quartz cells with an optical path length of L = 0.1 cm (Junker et al 2012). We call the conditions mentioned above "optimal" for the "reference reaction" since they fulfill several criteria we set for the reaction course and results (Junker et al 2012;Fujisaki et al 2019). The "reference reaction" is usually carried out in closed reaction tubes without any stirring or tube rotation.…”

Section: Synthesis Of Pani-es From Aniline With Hrpc and H 2 O 2 In The Presence Of Aot Vesicles ("Reference Reaction")mentioning

confidence: 99%

“…The structures shown refer to ideal PANI-ES chains which are thought to consist of polaron or bipolaron segments only 2011; Serrano- . Good templates for obtaining PANI-ES enzymatically from aniline, or the aniline dimer PADPA (p-aminodiphenylamine), were found to be anionic polyelectrolytes like sulfonated polystyrene sodium salt (SPS) (Samuelson et al 1998;Liu et al 1999b;Karamyshev et al 2003;Sakharov et al 2003;Fujisaki et al 2019;Kashima et al 2019), or anionic micelles, formed for example from SDBS (sodium dodecylbenzenesulfonate) (Liu et al 1999a(Liu et al , 2002Streltsov et al 2009;Fujisaki et al 2019;Kashima et al 2019), or anionic vesicles, built from sodium bis(2-ethylhexyl)sulfosuccinate) (AOT) (Guo et al 2011;Junker et al 2012Junker et al , 2014Fujisaki et al 2019;Kashima et al 2019) or from a 1:1 molar mixture of SDBS and decanoic acid (Guo et al 2009;Fujisaki et al 2019;Kashima et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…In all these examples, the terminal oxidant, H 2 O 2 or O 2 , was added at-or was present from-the beginning of the reaction (Guo et al 2011;Junker et al 2012;Fujisaki et al 2019;Kashima et al 2019), or it was added in portions during the course of the reaction (H 2 O 2 ) (Samuelson et al 1998;Liu et al 1999aLiu et al , b, 2002Sakharov et al 2003). The aim of the work presented here was to investigate whether PANI-ES formation from aniline with horseradish peroxidase isoenzyme C (HRPC) and AOT vesicles as templates is also possible with in situ formation of H 2 O 2 from d-glucose with glucose oxidase (GOD) and O 2 from air according to the following equation: (Bankar et al 2009), see Scheme 2.…”

Section: Introductionmentioning

confidence: 99%

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Application of an enzymatic cascade reaction for the synthesis of the emeraldine salt form of polyaniline

et al. 2021

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The synthesis of the emeraldine salt form of polyaniline (PANI-ES) from aniline with Aspergillus sp. glucose oxidase (GOD), d-glucose, dissolved O2, and horseradish peroxidase isoenzyme C (HRPC) in the presence of large unilamellar vesicles of AOT (sodium bis-(2-ethylhexyl)sulfosuccinate) as templates at pH = 4.3 and T ~ 25 °C was investigated in a systematic way. In this cascade reaction mixture, the oxidation of aniline is catalyzed by HRPC with H2O2 that is formed in situ as byproduct of the GOD-catalyzed oxidation of d-glucose with O2. Under the elaborated experimental conditions which we considered ideal, the formation of PANI-ES products is evident, as judged by UV/Vis/NIR and EPR measurements. Comparison was made with a reference reaction, which was run under similar conditions with added H2O2 instead of GOD and d-glucose. Although the reference reaction was found to be superior, with the cascade reaction, PANI-ES products can still be obtained with high aniline conversion (> 90%) within 24 h as stable dark green PANI-ES/AOT vesicle dispersion. Our results show that the in situ formation of H2O2 does not prevent the inactivation of HRPC known to occur in the reference reaction. Moreover, the GOD used in the cascade reaction is inactivated as well by polymerization intermediates.

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Section: Synthesis Of Pani-es From Aniline With Hrpc and H 2 O 2 In The Presence Of Aot Vesicles ("Reference Reaction")mentioning

confidence: 62%

Section: "Reference Reaction": Synthesis Of Pani-es Products From Aniline With Hrpc H 2 O 2 and Aot Vesiclesmentioning

confidence: 99%

Section: Synthesis Of Pani-es From Aniline With Hrpc and H 2 O 2 In The Presence Of Aot Vesicles ("Reference Reaction")mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Application of an enzymatic cascade reaction for the synthesis of the emeraldine salt form of polyaniline

et al. 2021

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Transient Rechargeable Battery with a High Lithium Transport Number Cellulosic Separator

Mittal

Ojanguren

Cavasin

et al. 2021

Adv Funct Materials

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Transient batteries play a pivotal role in the development of fully autonomous transient devices, which are designed to degrade after a period of stable operation. Here, a new transient separator‐electrolyte pair is introduced for lithium ion batteries. Cellulose nanocrystals (CNCs) are selectively located onto the nanopores of polyvinyl alcohol membranes, providing mobile ions to interact with the liquid electrolyte. After lithiation of CNCs, membranes with electrolyte uptake of 510 wt%, ionic conductivities of 3.077 mS·cm–1, electrochemical stability of 5.5 V versus Li/Li+, and high Li+ transport numbers are achieved. Using an organic electrolyte, the separators enable stable Li metal deposition with no dendrite growth, delivering 94 mAh·g–1 in Li/LiFePO4 cells at 100 mA·g–1 after 200 cycles. To make the separator‐electrolyte pair transient and non‐toxic, the organic electrolyte is replaced by a biocompatible ionic liquid. As a proof of concept, a fully transient Li/V2O5 cell is assembled, delivering 55 mAh·g–1 after 200 cycles at 100 mA·g–1. Thanks to the reversible Li plating/stripping, dendrite growth suppression, capacity retention, and degradability, these materials hold a bright future in the uptake of circular economy concepts applied to the energy storage field.

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Operando Raman spectroelectrochemical study of polyaniline degradation: A joint experimental and theoretical analysis

Nunes¹,

Pires²,

Thaines³

et al. 2022

Journal of Energy Storage

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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

Abstract: Different types of templates consisting of sulfonate or sulfate groups were compared for the horseradish peroxidase/H2O2-catalysed synthesis of the emeraldine salt form of polyaniline from aniline at pH = 4.3.

Cited by 17 publications

References 62 publications

Application of an enzymatic cascade reaction for the synthesis of the emeraldine salt form of polyaniline

Application of an enzymatic cascade reaction for the synthesis of the emeraldine salt form of polyaniline

Transient Rechargeable Battery with a High Lithium Transport Number Cellulosic Separator

Operando Raman spectroelectrochemical study of polyaniline degradation: A joint experimental and theoretical analysis

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