Tuning of the electrochemical properties of transparent fluorine-doped tin oxide electrodes by microwave pulsed-plasma polymerized allylamine

Anna Cirocka , Dorota Zarzeczańska , Anna Wcisło , Jacek Ryl , Robert Bogdanowicz , Birgit Finke , Tadeusz Ossowski

Abstract

We report here the dry, one-step, and low-temperature modification of FTO surfaces using pulsed plasma polymerization of allylamine (PPAAm). PPAAm/FTO surfaces were characterized by X-ray photoelectron spectroscopy, spectroscopic ellipsometry, and contact angles to understand the morphological, structural, and optical properties. FTO were coated with a very thin layer of adherent cross-linked, pinhole-, and additive-free allylamine plasma polymer resistant to hydrolysis and delamination, and characterized by a high density of positively charged amino groups. Electrochemical studies revealed that PPAAm/FTO electrodes show wide range pH stability and reaction rates tuned by the duration of plasma treatment. We show how the modification of plasma treatment duration between 72 s and 288 s affects the chemical structure and thickness of the obtained modification, having a strong influence on the charge transfer kinetics. In particular, XPS revealed the occurrence of the reduction processes under long-term plasma exposure proving the need for monitoring of this key factor. This covalent immobilization of amine compounds on FTO surface using rapid process in microwave pulsed-plasma makes it a promising electrode for future applications in electrochemical biosensors and optoelectronic devices.
Author Anna Cirocka (FCh / DACh / LSCh)
Anna Cirocka,,
- Laboratory of Supramolecular Chemistry
, Dorota Zarzeczańska (FCh / DACh / LSCh)
Dorota Zarzeczańska,,
- Laboratory of Supramolecular Chemistry
, Anna Wcisło (FCh / DACh / LSCh)
Anna Wcisło,,
- Laboratory of Supramolecular Chemistry
, Jacek Ryl
Jacek Ryl,,
-
, Robert Bogdanowicz
Robert Bogdanowicz,,
-
, Birgit Finke
Birgit Finke,,
-
, Tadeusz Ossowski (FCh / DACh / LSCh)
Tadeusz Ossowski,,
- Laboratory of Supramolecular Chemistry
Journal seriesElectrochimica Acta, ISSN 0013-4686, (N/A 100 pkt)
Issue year2019
Vol313
Pages432-440
Publication size in sheets0.5
Keywords in EnglishFluorine-doped tin oxide electrodes, surface modification, plasma polymerization, allylamine, direct surface amination
ASJC Classification1603 Electrochemistry; 1500 General Chemical Engineering
DOIDOI:10.1016/j.electacta.2019.05.046
URL https://doi.org/10.1016/j.electacta.2019.05.046
Languageen angielski
Score (nominal)100
ScoreMinisterial score = 100.0, 30-09-2019, ArticleFromJournal
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.101; WoS Impact Factor: 2017 = 5.116 (2) - 2017=4.857 (5)
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