Graphene catalyzes the reversible formation of a C–C bond between two molecules

Navarro, José María Martínez; Pisarra, M.; Nieto‐Ortega, Belén; Villalva, Julia; G., Ayani, Cosme; Dı́az, Cristina; Calleja, F.; Miranda, Rodolfo; Martı́n, Fernando; Pérez, Emilio M.; Parga, Amadeo L. Vázquez de

doi:10.1126/sciadv.aau9366

Cited by 10 publications

(6 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, the on-surface migration of the spherical intermediate as depicted in Figure c can be directly correlated to an increased hydrogen loss rate (highlighted in Figure a). This dynamic bond breaking and binding to the GML catalyzes the H loss significantly and makes graphene a non-innocent substrate in our observations . This finding is important because previous SMART-EM studies revealed that molecules encapsulated in carbon nanotubes, , or attached to the periphery of carbon nanohorns, ,, show only minor interactions with the substrate.…”

Section: Resultssupporting

confidence: 50%

“…This dynamic bond breaking and binding to the GML catalyzes the H loss significantly and makes graphene a noninnocent substrate in our observations. 51 This finding is important because previous SMART-EM studies revealed that molecules encapsulated in carbon nanotubes, 52,53 or attached to the periphery of carbon nanohorns, 15,54,55 show only minor interactions with the substrate. Even though the hydrogen atoms' contributions are neglectable to the overall contrast of the molecule in TEM, their presence (or absence) has a great impact on the overall geometry of the structure.…”

mentioning

confidence: 94%

See 1 more Smart Citation

A Singular Molecule-to-Molecule Transformation on Video: The Bottom-Up Synthesis of Fullerene C₆₀ from Truxene Derivative C₆₀H₃₀

et al. 2021

View full text Add to dashboard Cite

Singular reaction events of small molecules and their dynamics remain a hardly understood territory in chemical sciences since spectroscopy relies on ensemble-averaged data, and microscopic scanning probe techniques show snapshots of frozen scenes. Herein, we report on continuous high-resolution transmission electron microscopic video imaging of the electron-beam-induced bottom-up synthesis of fullerene C 60 through cyclodehydrogenation of tailor-made truxene derivative 1 (C 60 H 30 ), which was deposited on graphene as substrate. During the reaction, C 60 H 30 transformed in a multistep process to fullerene C 60 . Hereby, the precursor, metastable intermediates, and the product were identified by correlations with electron dose-corrected molecular simulations and singlemolecule statistical analysis, which were substantiated with extensive density functional theory calculations. Our observations revealed that the initial cyclodehydrogenation pathway leads to thermodynamically favored intermediates through seemingly classical organic reaction mechanisms. However, dynamic interactions of the intermediates with the substrate render graphene as a non-innocent participant in the dehydrogenation process, which leads to a deviation from the classical reaction pathway. Our precise visual comprehension of the dynamic transformation implies that the outcome of electron-beam-initiated reactions can be controlled with careful molecular precursor design, which is important for the development and design of materials by electron beam lithography.

show abstract

Section: Resultssupporting

confidence: 50%

mentioning

confidence: 94%

A Singular Molecule-to-Molecule Transformation on Video: The Bottom-Up Synthesis of Fullerene C₆₀ from Truxene Derivative C₆₀H₃₀

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Moiré patterns represent a gradual change in the interaction between the film and the substrate across its unit cell, giving rise to a spatial modulation of the reactivity at the atomic level. This effect was demonstrated for graphene and opens new possibilities for catalysis on 2D materials . In thin film silica systems, a moiré pattern was reported for a silica ML on Ru(0001).…”

Section: Resultsmentioning

confidence: 78%

“…This effect was demonstrated for graphene 26 and opens new possibilities for catalysis on 2D materials. 27 In thin film silica systems, a moirépattern was reported for a silica ML on Ru(0001). In this case, a 30°F rotation after annealing triggered the emergence of the longrange spatial modulation.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Structure of a Silica Thin Film on Oxidized Cu(111): Conservation of the Honeycomb Lattice and Role of the Interlayer

et al. 2020

View full text Add to dashboard Cite

The metal–oxide interface has a crucial role in determining the growth of silica thin films. However, only a few metallic substrates have been explored so far. In previous studies, metal substrates exhibiting unreconstructed surfaces under oxygen exposure have been analyzed. In this work, we study the structure of a silica thin film grown on Cu(111) and propose that a copper oxide film formed at the interface inhibits the appearance of defects and domain boundaries. Our results suggest that the silica film structure has flexible connections with the copper oxide interlayer leading to a lattice solely composed of six-membered rings. This honeycomb configuration is certainly of importance in the design of well-defined two-dimensional oxide thin films on metallic substrates and for catalysis applications involving metal–oxide interfaces.

show abstract

“…The electron buzzing around the carbon atom which interact with the periodic potential of graphene hexagonal lattice [12] which produce new quasi-particles that's why graphene never stop conducting. The reasons that makes graphene interesting both as individual and as composites is due to the outstanding properties such as stiffness, strength [13] and toughness [14]. Throughout the world research groups working on the development of industrially fabricated graphene layers that have high stiffness used as graphene based composites for optoelectronics and neural implants [15,16].…”

Section: Introductionmentioning

confidence: 99%

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

Hussain

Ihrar

et al. 2020

SN Appl. Sci.

View full text Add to dashboard Cite

Two-dimensional (2D) graphene and its outstanding properties such as, enormous conductivities, mechanical strength, optical and electrical properties brought it one of the most studied materials for the production of energy using renewable resources. The composites of graphene with the same morphological materials such as layered transition metal oxides will be the most aspiring combination to boost their conducting, optoelectronic and mechanical properties. Furthermore, the transition metal chalcogenides materials attracted significant attention due to their atomically thin layers and enormous optical, conducting and electrical properties. The layered materials offer mostly atomically thin 2D plane to the charge carrier with superior conducting properties. The thickness at atomic level, band gap, spin orbit coupling electronic and optoelectronics properties of transition metal dichalcogenides makes them one of the promising entities in energy harvesting technologies. The review suggests some strategies to improve the transition metals-composites stability conducting properties to be tailored in various applications.

show abstract

Graphene catalyzes the reversible formation of a C–C bond between two molecules

Abstract: Graphene grown on a transition metal surface catalyzes a reversible C–C bond–forming reaction between two molecules.

Cited by 10 publications

References 57 publications

A Singular Molecule-to-Molecule Transformation on Video: The Bottom-Up Synthesis of Fullerene C₆₀ from Truxene Derivative C₆₀H₃₀

A Singular Molecule-to-Molecule Transformation on Video: The Bottom-Up Synthesis of Fullerene C₆₀ from Truxene Derivative C₆₀H₃₀

Structure of a Silica Thin Film on Oxidized Cu(111): Conservation of the Honeycomb Lattice and Role of the Interlayer

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

Contact Info

Product

Resources

About

Graphene catalyzes the reversible formation of a C–C bond between two molecules

Abstract: Graphene grown on a transition metal surface catalyzes a reversible C–C bond–forming reaction between two molecules.

Cited by 10 publications

References 57 publications

A Singular Molecule-to-Molecule Transformation on Video: The Bottom-Up Synthesis of Fullerene C60 from Truxene Derivative C60H30

A Singular Molecule-to-Molecule Transformation on Video: The Bottom-Up Synthesis of Fullerene C60 from Truxene Derivative C60H30

Structure of a Silica Thin Film on Oxidized Cu(111): Conservation of the Honeycomb Lattice and Role of the Interlayer

A review on graphene based transition metal oxide composites and its application towards supercapacitor electrodes

Contact Info

Product

Resources

About

A Singular Molecule-to-Molecule Transformation on Video: The Bottom-Up Synthesis of Fullerene C₆₀ from Truxene Derivative C₆₀H₃₀

A Singular Molecule-to-Molecule Transformation on Video: The Bottom-Up Synthesis of Fullerene C₆₀ from Truxene Derivative C₆₀H₃₀