Transparent and Electrically Conductive Films from Chemically Derived Graphene

Eigler, Siegfried

doi:10.5772/14133

Cited by 2 publications

(3 citation statements)

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“…Since the isolation and characterization of single-layer graphene, two-dimensional materials (2DMs) such as graphene, hexagonal boronitride (h-BN), and molybdenum disulfide (MoS 2 ) have held privileged positions within the molecular sciences. − Because of their excellent electronic and mechanical properties, 2DM-based devices have quickly gained prominence in chemistry, , materials science, , and physics over the past decade. , Contributing to their success is the ability to modify the Fermi level of 2DMs through various methodologies such as chemical doping − and covalent surface modification , among others. − Although attractive, the drawback of these methodologies is that they chemically alter the 2DM lattice, which can be detrimental to their physicochemical properties. Self-assembly on the other hand does not chemically alter the 2DM lattice since it relies on noncovalent interactions such as π–π stacking and/or van der Waals interactions.…”

Section: Introductionmentioning

confidence: 99%

“…2−6 Because of their excellent electronic and mechanical properties, 2DM-based devices have quickly gained prominence in chemistry, 7,8 materials science, 9,10 and physics over the past decade. 11,12 Contributing to their success is the ability to modify the Fermi level of 2DMs through various methodologies such as chemical doping 13−15 and covalent surface modification 16,17 among others. 18−20 Although attractive, the drawback of these methodologies is that they chemically alter the 2DM lattice, which can be detrimental to their physicochemical properties.…”

Section: ■ Introductionmentioning

confidence: 99%

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Formation of Highly Ordered Self-Assembled Monolayers on Two-Dimensional Materials via Noncovalent Functionalization

Brill

Kuntumalla

Ruiter

et al. 2020

ACS Appl. Mater. Interfaces

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Functionalized two-dimensional materials (2DMs) are attracting much attention due to their promising applications in nanoscale devices. Producing continuous and homogeneous surface assemblies with a high degree of order has been challenging. In this work, we demonstrate that by noncovalently self-assembling molecular platforms on 2DMs, high-quality and highly ordered monolayers can be generated. The high degree of order and uniformity of the self-assembled monolayer layers were confirmed by a variety of analytic techniques including time-of-flight secondary ion mass spectrometry, scanning tunnelling microscopy, X-ray photoelectron spectroscopy, and atomic force microscopy. Furthermore, by selectively enhancing the molecular vibrations of the molecular platform, via a combination of graphene-enhanced Raman spectroscopy (GERS) and surface-enhanced Raman spectroscopy (SERS), we were able to determine the orientation of self-assembled molecular platforms with respect to the surface normal. The selective enhancement of the vibrational modes occurs by taking advantage of the distance dependence of the Raman enhancement either by the graphene surface (GERS) or the silver nanoparticules (SERS) that are located on top of the self-assembled monolayer.

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