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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
Title statement Structural 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 Titles Strukturální 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 title Structural and chemical properties of boron and nitrogen dopants in graphene by means of STM/AFM in UHV at 5 K Issue data 2019 Phys.des. 59 : il., grafy Note Ved. 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 Country Česko Language angličtina Document kind PUBLIKAČNÍ ČINNOST Title Mgr. Degree program Navazující Degree program Chemistry Degreee discipline Material Chemistry book
Kvalifikační práce Downloaded Size datum zpřístupnění 00255239-747516341.pdf 49 12.9 MB 26.04.2019 Posudek Typ posudku 00255239-ved-961011070.pdf Posudek vedoucího 00255239-opon-846762593.pdf Posudek 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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