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  • Allali, NaoualLuleå tekniska universitet,Materialvetenskap,LCPME, UMR CNRS-Université de Lorraine, Villers-lès-Nancy, France; SRSMC, UMR CNRS-Université de Lorraine, Faculté des Sciences et Technologies, Vandoeuvre-lès-Nancy, France (author)

Accurate control of the covalent functionalization of single-walled carbon nanotubes for the electro-enzymatically controlled oxidation of biomolecules

  • Article/chapterEnglish2018

Publisher, publication year, extent ...

  • 2018-10-26
  • Beilstein-Institut,2018
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:ltu-71587
  • https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-71587URI
  • https://doi.org/10.3762/bjnano.9.257DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Validerad;2018;Nivå 2;2018-11-15 (johcin)
  • Single-walled carbon nanotubes (SWCNTs) were functionalized by ferrocene through ethyleneglycol chains of different lengths (FcETGn) and the functionalized SWCNTs (f-SWCNTs) were characterized by different complementary analytical techniques. In particular, high-resolution scanning electron transmission microscopy (HRSTEM) and electron energy loss spectroscopy (EELS) analyses support that the outer tubes of the carbon-nanotube bundles were covalently grafted with FcETGn groups. This result confirms that the electrocatalytic effect observed during the oxidation of the reduced form of nicotinamide adenine dinucleotide (NADH) co-factor by the f-SWCNTs is due to the presence of grafted ferrocene derivatives playing the role of a mediator. This work clearly proves that residual impurities present in our SWCNT sample (below 5 wt. %) play no role in the electrocatalytic oxidation of NADH. Moreover, molecular dynamic simulations confirm the essential role of the PEG linker in the efficiency of the bioelectrochemical device in water, due to the favorable interaction between the ETG units and water molecules that prevents π-stacking of the ferrocene unit on the surface of the CNTs. This system can be applied to biosensing, as exemplified for glucose detection. The well-controlled and well-characterized functionalization of essentially clean SWCNTs enabled us to establish the maximum level of impurity content, below which the f-SWCNT intrinsic electrochemical activity is not jeopardized.

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  • Urbanova, VeronikaLCPME, UMR CNRS-Université de Lorraine, Villers-lès-Nancy, France (author)
  • Etienne, MathieuLCPME, UMR CNRS-Université de Lorraine, Villers-lès-Nancy, France (author)
  • Devaux, XavierIJL, UMR CNRS-Université de Lorraine, Nancy Cedex, France (author)
  • Mallet, MartineLCPME, UMR CNRS-Université de Lorraine, Villers-lès-Nancy, France (author)
  • Vigolo, BrigitteIJL, UMR CNRS-Université de Lorraine, Faculté des Sciences et Technologies, Vandoeuvre-lès-Nancy Cedex, France (author)
  • Adjizian, Jean-JosephIMN, UMR CNRS-Université de Nantes, Nantes, France (author)
  • Ewels, ChrisIMN, UMR CNRS-Université de Nantes, Nantes, France (author)
  • Öberg, SvenLuleå tekniska universitet,Materialvetenskap(Swepub:ltu)oberg (author)
  • Soldatov, AlexanderLuleå tekniska universitet,Materialvetenskap(Swepub:ltu)also (author)
  • McRae, EdwardIJL, UMR CNRS-Université de Lorraine, Faculté des Sciences et Technologies,Vandoeuvre-lès-Nancy Cedex, France (author)
  • Fort, YvesSRSMC, UMR CNRS-Université de Lorraine, Faculté des Sciences et Technologies, Vandoeuvre-lès-Nancy, France (author)
  • Dossot, ManuelLCPME, UMR CNRS-Université de Lorraine, Villers-lès-Nancy, France (author)
  • Mamane, VictorInstitut de Chimie de Strasbourg, UMR CNRS-Université de Strasbourg, Strasbourg, France (author)
  • Luleå tekniska universitetMaterialvetenskap (creator_code:org_t)

Related titles

  • In:Beilstein Journal of Nanotechnology: Beilstein-Institut9, s. 2750-27622190-4286

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