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Structural and chemical properties of boron and nitrogen dopants in graphene by means of STM/AFM in UHV at 5 K

  1. Title statementStructural and chemical properties of boron and nitrogen dopants in graphene by means of STM/AFM in UHV at 5 K [rukopis] / Benjamin Jose Mallada faes
    Additional Variant TitlesStrukturální a chemické vlastnosti boru a dusíku dopantů v grafenu prostřednictvím STM / AFM v UHV na 5 K
    Personal name Mallada faes, Benjamin Jose, (dissertant)
    Translated titleStructural and chemical properties of boron and nitrogen dopants in graphene by means of STM/AFM in UHV at 5 K
    Issue data2019
    Phys.des.59 : il., grafy
    NoteVed. práce Pavel Jelínek
    Another responsib. Jelínek, Pavel, (thesis advisor)
    Another responsib. Univerzita Palackého. Katedra fyzikální chemie (degree grantor)
    Keywords STM * AFM * KPFM * doped graphene * nitrogen doped graphene * boron doped graphene * graphene reactivity with CO * STM * AFM * KPFM * doped graphene * nitrogen doped graphene * boron doped graphene * graphene reactivity with CO
    Form, Genre diplomové práce master's theses
    UDC (043)378.2
    CountryČesko
    Languageangličtina
    Document kindPUBLIKAČNÍ ČINNOST
    TitleMgr.
    Degree programNavazující
    Degree programChemistry
    Degreee disciplineMaterial Chemistry
    book

    book

    Kvalifikační práceDownloadedSizedatum zpřístupnění
    00255239-747516341.pdf4912.9 MB26.04.2019
    PosudekTyp posudku
    00255239-ved-961011070.pdfPosudek vedoucího
    00255239-opon-846762593.pdfPosudek oponenta

    During the last decade, graphene has emerged as one of the most researched material with promising applications in photocatalysis, molecular sensing, nanoelectronics, and energy storage. Here we show the incorporation of substitutional dopants significantly affects the graphene chemical reactivity. B and N dopants locally reduce and increase respectively the interaction of graphene to individual CO molecules attached to the apex of metallic tip, used for performing scanning probe microscopy and atomic force microscopy. The interaction is driven by weak electrostatic forces between seated charges induced by dopants in graphene and the molecule. The doping is accompanied by a sharp redistribution of graphene electron density at the B-C and N-C bonds observed in high-resolution AFM images and subsequent variation of the work function. Our observations provide further insight into the non-covalent interactions of boron and nitrogen dopants in graphene with relevant molecules for potential applications in molecular sensing.During the last decade, graphene has emerged as one of the most researched material with promising applications in photocatalysis, molecular sensing, nanoelectronics, and energy storage. Here we show the incorporation of substitutional dopants significantly affects the graphene chemical reactivity. B and N dopants locally reduce and increase respectively the interaction of graphene to individual CO molecules attached to the apex of metallic tip, used for performing scanning probe microscopy and atomic force microscopy. The interaction is driven by weak electrostatic forces between seated charges induced by dopants in graphene and the molecule. The doping is accompanied by a sharp redistribution of graphene electron density at the B-C and N-C bonds observed in high-resolution AFM images and subsequent variation of the work function. Our observations provide further insight into the non-covalent interactions of boron and nitrogen dopants in graphene with relevant molecules for potential applications in molecular sensing.

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