Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  Macroporous indium tin oxide electrode layers as conducting substrates for immobilization of bulky electroactive guests

Liu, Y., Peters, K., Mandlmeier, B., Müller, A., Fominykh, K., Rathousky, J., et al. (2014). Macroporous indium tin oxide electrode layers as conducting substrates for immobilization of bulky electroactive guests. Electrochimica Acta, 140, 108-115. doi:10.1016/j.electacta.2014.05.046.

Item is

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Liu, Yujing1, 2, Autor           
Peters, Kristina2, Autor           
Mandlmeier, Benjamin3, Autor           
Müller, Alexander4, Autor           
Fominykh, Ksenia2, Autor           
Rathousky, Jiri5, Autor           
Scheu, Christina Ulrike6, Autor           
Fattakhova-Rohlfing, Dina3, Autor           
Affiliations:
1Swiss Federal Laboratories for Materials Science and Technol-ogy (Empa) Duebendorf, Switzerland, ou_persistent22              
2Department of Chemistry and Centre for NanoScience (CeNS), University of Munich (LMU), Butenandtstrasse 5-13 (E), Munich, Germany, ou_persistent22              
3Department of Chemistry and Center for NanoScience (CeNS), Ludwig-Maximilians- Universität München, Butenandtstr. 5-11, D-81377 Munich, Germany, ou_persistent22              
4Department of Chemistry and CeNS, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-11 (E), Munich, Germany, ou_persistent22              
5J. Heyrovský Institute of Physical Chemistry, V.v.i., Academy of Sciences of the Czech Republic, Dolejskova 3, Prague 8, Czech Republic, ou_persistent22              
6Department of Chemistry and Center for NanoScience (CeNS), Ludwig-Maximilians Universität München, Germany, ou_persistent22              

Inhalt

einblenden:
ausblenden:
Schlagwörter: CYTOCHROME-C; DIRECT ELECTROCHEMISTRY; THIN-FILMS; NANOPARTICLES; HEMOGLOBIN; ADSORPTION; PROTEIN; GOLD; CELLElectrochemistry; Macroporous electrodes; templated self-assembly, transparent; conducting oxides; indium tin oxide; redox proteins;
 Zusammenfassung: Macroporous indium tin oxide (ITO) electrodes with a defined uniform pore size were prepared via direct co-assembly of ultra-small indium tin hydroxide (nano-ITOH) nanoparticles and poly(methyl methacrylate) (PMMA) beads. The use of nano-ITOH nanoparticles enables a facile large-scale fabrication of homogeneous crack-free coatings with good adhesion to the substrate, good optical quality and tunable thickness, which easily transform at 400 degrees C into crystalline ITO with similar morphology. Macroporous ITO films exhibit reasonably high electric conductivity of 4.0 +/- 0.3 S cm(-1) and open interconnected pores with a uniform size of ca. 300 nm, which makes them suitable conducting platforms for immobilization of bulky redox species or for deposition of functional electroactive layers. Deposition of functional semiconducting layers on the walls of the porous ITO scaffold was shown for titanium dioxide, which penetrates the ITO framework as shown by transmission electron microscopy (TEM) analysis of a cross-section. The obtained layers were used as conducting substrates for the immobilization of the heme proteins cytochrome c and hemoglobin, which demonstrate a direct electron transfer to the macroporous ITO electrode. Surface coverage of cytochrome c adsorbed on the macroporous ITO electrode is more than 12 times higher than on a planar one, reaching 400 pmol cm(-2) for a film of ca. 360 nm in thickness. Hemoglobin adsorbed on the macroporous ITO electrodes also demonstrates a noticeably high surface coverage of ca. 160 +/- 20 pmol cm(-2), which is roughly 7-10 times higher than the theoretical value for monolayer coverage. (C) 2014 Elsevier Ltd. All rights reserved.

Details

einblenden:
ausblenden:
Sprache(n): eng - English
 Datum: 2014-09-10
 Publikationsstatus: Erschienen
 Seiten: 8
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: ISI: 000342528600016
DOI: 10.1016/j.electacta.2014.05.046
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Electrochimica Acta
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Amsterdam : Pergamon
Seiten: - Band / Heft: 140 Artikelnummer: - Start- / Endseite: 108 - 115 Identifikator: ISSN: 0013-4686
CoNE: https://pure.mpg.de/cone/journals/resource/954925396434