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32 papers
Curved graphene nanoribbons derived from tetrahydropyrene-based polyphenylenes via one-pot K-region oxidation and Scholl cyclization
Sebastian Obermann, Wenhao Zheng, Jason Melidonie +11
Precise synthesis of graphene nanoribbons (GNRs) is of great interest to chemists and materials scientists because of their unique opto-electronic properties and potential applicat…
Near IR bandgap semiconductive 2D conjugated metal-organic framework with rhombic lattice and high mobility
Lukas Sporrer, Guojun Zhou, Mingchao Wang +11
Two-dimensional conjugated metal-organic frameworks (2D c-MOFs) are emerging as a unique class of 2D electronic materials. However, intrinsically semiconducting 2D c-MOFs with gaps…
Giant proton transmembrane transport through sulfophenylated graphene in a direct methanol fuel cell
Weizhe Zhang, Max Makurat, Xue Liu +21
An ideal proton exchange membrane should only permeate protons and be leak tight for fuels. Graphene is impermeable to water and poorly conducting to protons. Here, we chemically f…
Tailoring magnetism of nanographenes via tip-controlled dehydrogenation
Chenxiao Zhao, Qiang Huang, Leoš Valenta +10
Atomically precise graphene nanoflakes, called nanographenes, have emerged as a promising platform to realize carbon magnetism. Their ground state spin configuration can be anticip…
On-surface synthesis and characterization of Teranthene and Hexanthene: Ultrashort graphene nanoribbons with mixed armchair and zigzag edges
Gabriela Borin Barin, Marco Di Giovannantonio, Thorsten G. Lohr +8
Graphene nanoribbons (GNRs) exhibit a broad range of physicochemical properties that critically depend on their width and edge topology. While the chemically stable GNRs with armch…
A Cu3BHT-Graphene van der Waals Heterostructure with Strong Interlayer Coupling
Zhiyong Wang, Shuai Fu, Wenjie Zhang +19
Two dimensional van der Waals heterostructures (2D are of significant interest due to their intriguing physical properties that are critically defined by the constituent monolayers…
Multifunctional, Self-Cleaning Air Filters Based on Graphene-Enhanced Ceramic Networks
Armin Reimers, Ala Bouhanguel, Erik Greve +9
Particulate air pollution is taking a huge toll on modern society, being associated with more than three million deaths per year. In addition, airborne infectious microorganism can…
Overcoming water diffusion limitations in hydrogels via microtubular graphene networks for soft actuators
Margarethe Hauck, Lena M. Saure, Berit Zeller-Plumhoff +9
Hydrogel-based soft actuators can operate in sensitive environments, bridging the gap of rigid machines interacting with soft matter. However, while stimuli-responsive hydrogels ca…
Hybrid aeromaterials for enhanced and rapid volumetric photothermal response
Lena M. Saure, Niklas Kohlmann, Haoyi Qiu +8
Conversion of light into heat is essential for a broad range of technologies such as solar thermal heating, catalysis and desalination. Three-dimensional (3D) carbon nanomaterial-b…
Twisted bilayer zigzag-graphene nanoribbon junctions with tunable edge states
Dongfei Wang, De-Liang Bao, Qi Zheng +14
Stacking two-dimensional layered materials such as graphene and transitional metal dichalcogenides with nonzero interlayer twist angles has recently become attractive because of th…
Graphene coating of Nafion membranes for enhanced fuel cell performance
Jasper Ruhkopf, Ulrich Plachetka, Michael Moeller +9
Electrochemically exfoliated graphene (e-G) thin films on Nafion membranes exhibit a selective barrier effect against undesirable fuel crossover. The approach combines the…
Growth optimization and device integration of narrow-bandgap graphene nanoribbons
Gabriela Borin Barin, Qiang Sun, Marco Di Giovannantonio +26
The electronic, optical and magnetic properties of graphene nanoribbons (GNRs) can be engineered by controlling their edge structure and width with atomic precision through bottom-…
Synthesis and characterization of super-nonazethrene
Elia Turco, Shantanu Mishra, Jason Melidonie +6
Beginning with the early work of Clar et al. in 1955, zethrenes and their laterally-extended homologues, super-zethrenes, have been intensively studied in the solution phase, and a…
Observation of fractional edge excitations in nanographene spin chains
Shantanu Mishra, Goncalo Catarina, Fupeng Wu +9
Fractionalization is a phenomenon in which strong interactions in a quantum system drive the emergence of excitations with quantum numbers that are absent in the building blocks. O…
Designer spin order in diradical nanographenes
Yuqiang Zheng, Can Li, Chengyang Xu +14
The magnetic properties of carbon materials are at present the focus of an intense research effort in physics, chemistry and materials science due to their potential applications i…
On-surface synthesis of nitrogen-doped nanographenes with 5-7 membered rings
Dmitry Skidin, Frank Eisenhut, Marcus Richter +7
We report on the formation of nitrogen-doped nanographenes containing five- and seven-membered rings by thermally induced cyclodehydrogenation on the Au(111) surface. Using scannin…
Collective All-Carbon Magnetism in Triangulene Dimers
Shantanu Mishra, Doreen Beyer, Kristjan Eimre +8
Triangular zigzag nanographenes, such as triangulene and its pi-extended homologues, have received widespread attention as organic nanomagnets for molecular spintronics, and may se…
Wetting Properties of Graphene Aerogels
Francesco De Nicola, Ilenia Viola, Lorenzo Donato Tenuzzo +7
Graphene hydrophobic coatings paved the way towards a new generation of optoelectronic and fluidic devices. Nevertheless, such hydrophobic thin films rely only on graphene non-pola…
Band Gap of Atomically Precise Graphene Nanoribbons as a Function of Ribbon Length and Termination
Leopold Talirz, Hajo Söde, Shigeki Kawai +7
We study the band gap of finite armchair graphene nanoribbons (7-AGNRs) on Au(111) through scanning tunneling microscopy/spectroscopy combined with density functional theor…
Multi-wavelength Raman Spectroscopy of Ultra-narrow Nanoribbons Made by Solution-mediated Bottom-up Approach
Daniele Rizzo, Deborah Prezzi, Alice Ruini +10
Here we present a combined experimental and theoretical study of graphene nanoribbons (GNRs), where detailed multi-wavelength Raman measurements are integrated by accurate ab initi…
WS2-graphite dual-ion battery
Sebastiano Bellani, Faxing Wang, Gianluca Longoni +8
A novel WS2-graphite dual-ion battery (DIB) is developed by combining together a conventional graphite cathode and high-capacity few-layer WS2 flakes anode. The WS2 flakes are prod…
Structure-dependent electrical properties of graphene nanoribbon devices with graphene electrodes
Leonardo Martini, Zongping Chen, Neeraj Mishra +9
Graphene nanoribbons (GNRs) are a novel and intriguing class of materials in the field of nanoelectronics, since their properties, solely defined by their width and edge type, are…
Substrate transfer and ex situ characterization of on-surface synthesized graphene nanoribbons
Gabriela Borin Barin, Andrew Fairbrother, Lukas Rotach +13
Recent progress in the on-surface synthesis of graphene nanoribbons (GNRs) has given access to atomically precise narrow GNRs with tunable electronic band gaps that makes them exce…
Probing optical excitations in chevron-like armchair graphene nanoribbons
Richard Denk, Alberto Lodi-Rizzini, Shudong Wang +15
The bottom-up fabrication graphene nanoribbons (GNRs) has opened new opportunities to specifically control their electronic and optical properties by precisely controlling their at…