A5068524122- Molecular Junctions and Nanostructures
- Surface Chemistry and Catalysis
- Graphene research and applications
- Perovskite Materials and Applications
- Solid-state spectroscopy and crystallography
- Quantum Dots Synthesis And Properties
- Advanced Chemical Physics Studies
- Synthesis and Properties of Aromatic Compounds
- Nanomaterials for catalytic reactions
- Organic Electronics and Photovoltaics
- Quantum and electron transport phenomena
- Mass Spectrometry Techniques and Applications
- Fullerene Chemistry and Applications
- Catalysis and Hydrodesulfurization Studies
- Quantum-Dot Cellular Automata
- Porphyrin and Phthalocyanine Chemistry
- nanoparticles nucleation surface interactions
- Catalysis and Oxidation Reactions
- Surface and Thin Film Phenomena
- Luminescence and Fluorescent Materials
- Supramolecular Self-Assembly in Materials
- Asymmetric Hydrogenation and Catalysis
- Topological Materials and Phenomena
- Synthesis of Indole Derivatives
- Electronic and Structural Properties of Oxides
Madrid Institute for Advanced Studies
2023-2025
IMDEA Nanoscience
2022-2025
Material Physics Center
2017-2023
University of the Basque Country
2017-2023
Donostia International Physics Center
2017-2023
Laboratoire de physique des Solides
2016-2021
Université Paris-Sud
2017
Centre National de la Recherche Scientifique
2017
Université Paris-Saclay
2017
We report the on-surface synthesis of 7-armchair graphene nanoribbons (7-AGNRs) substituted with nitrile (CN) functional groups. The CN groups are attached to GNR backbone by modifying 7-AGNR precursor. Whereas many these survive synthesis, reaction process causes cleavage some from ribbon and cycloisomerization few nitriles onto pyridine rings. Scanning tunneling spectroscopy density theory reveal that behave as very efficient n-dopants, significantly downshifting bands introducing deep...
Abstract The incorporation of non‐benzenoid motifs in graphene nanostructures significantly impacts their properties, making them attractive for applications carbon‐based electronics. However, understanding how specific structures influence properties remains limited, and further investigations are needed to fully comprehend implications. Here, we report an on‐surface synthetic strategy toward fabricating nanographenes containing different combinations pentagonal heptagonal rings. Their...
Triangulene and its homologues are promising building blocks for high‐spin low‐dimensional networks with long‐range magnetic order. Despite the recent progress in synthesis characterization of coupled triangulenes, key parameters such as number organic linking units or their dihedral angles remain scarce, making further studies crucial an essential understanding implications. Here, we investigate reactivity two triangulene dimers linked by (Dimer 1) one 2) para‐biphenyl units, respectively,...
Triangulene and its homologues are promising building blocks for high‐spin low‐dimensional networks with long‐range magnetic order. Despite the recent progress in synthesis characterization of coupled triangulenes, key parameters such as number organic linking units or their dihedral angles remain scarce, making further studies crucial an essential understanding implications. Here, we investigate reactivity two triangulene dimers linked by (Dimer 1) one 2) para‐biphenyl units, respectively,...
Open-shell nanographenes (NGs), also known as molecular π-magnets, have recently garnered attention for their potential in spintronics and quantum computing. Tailoring of such NGs at the atomic level allows control magnetic interactions. We report here on-surface synthesis a dibenzo-fused rhomboidal NG with predominant zigzag edges featuring an open-shell (antiferromagnetic) character high value exchange coupling (MEC) on Au(111) surfaces. Scanning tunneling microscopy (STM) noncontact force...
The experimental realization of kagome lattices that exhibit the predicted coexistence topological states with high electron kinetics and non-dispersing quantum remains challenging. Additionally, robustness these states...
The family of hybrid organic–inorganic halide perovskites is in the limelight because their recently discovered high photovoltaic efficiency. These materials combine energy conversion efficiencies exceeding 22% and low-temperature low-cost processing solution; a breakthrough panorama renewable energy. Solar cell operation relies on excitation valence band electrons to conduction by solar photons. One factor strongly impacting absorption efficiency dispersion. dispersion has been extensively...
Non-benzenoid non-alternant nanographenes (NGs) have attracted increasing attention on account of their distinct electronic and structural features in comparison to isomeric benzenoid counterparts. In this work, we present a series unprecedented azulene-embedded NGs Au(111) during the attempted synthesis cyclohepta[def]fluorene-based high-spin non-Kekulé structure. Comprehensive scanning tunneling microscopy (STM) non-contact atomic force (nc-AFM) evidence structures conformations these...
Copper is the paradigmatic catalyzer of Ullmann cross-coupling reaction. Despite this, its role in reaction still under debate. Here, we shed light on mechanistic steps debromination, characterizing a prototypical molecule, namely 4,7-dibromobenzo[ c]-1,2,5-thiadiazole (2Br-BTD), deposited Cu(110) surface. By means scanning probe techniques and first principle calculations, demonstrate oxidative addition Cu atoms leading to -C-Cu-Br metal-organic complex. The scission strongly bound bromine...
Abstract The incorporation of non‐benzenoid motifs in graphene nanostructures significantly impacts their properties, making them attractive for applications carbon‐based electronics. However, understanding how specific structures influence properties remains limited, and further investigations are needed to fully comprehend implications. Here, we report an on‐surface synthetic strategy toward fabricating nanographenes containing different combinations pentagonal heptagonal rings. Their...
The design of novel low-dimensional carbon materials is at the forefront modern chemistry. Recently, on-surface covalent synthesis has emerged as a powerful strategy to synthesize previously precluded compounds and polymers. Here, we report scanning probe microscopy study, complemented by theoretical calculations, on sequential skeletal rearrangement sumanene-based precursors into coronene-based organometallic network stepwise intra- inter-molecular reactions Au(111). Interestingly, upon...
Within the collection of surface-supported reactions currently accessible for production extended molecular nanostructures under ultra-high vacuum, Ullmann coupling has been most successful in controlled formation covalent single C-C bonds. Particularly advanced control this synthetic tool obtained by means hierarchical reactivity, commonly achieved use different halogen atoms that consequently display distinct activation temperatures. Here we report on site-selective reactivity certain...
Non-covalent bonds are fundamental for designing self-assembled organic structures with potentially high responsiveness to mechanical, light, and thermal stimuli. The weak intermolecular interaction allows triggering charge-transport, energy-conversion, enzymatic, catalytic activity, name a few. Here, we discuss the synergistic action that multiple highly-directional purely electrostatic have in assembling one molecular specie, namely 4,7-dibromobenzo[c]-1,2,5-thiadiazole (2Br-BTD), two...
We show that the electronic and chemical properties of a surface-supported 2-dimensional layer structure can be self-texturized at nanoscale.
Thioether polymers are fundamental for a variety of applications. Their synthesis is, however, more challenging than that other metal-catalyzed reactions due to the reported detachment S atom during thermal activation. In this study, it has been demonstrated unambiguously annealing results in thioetherification 4-bromo-4-mercaptobiphenyl molecule (Br-MBP) adsorbed on surface Au(111). Through complementary techniques, such as scanning tunneling microscopy, spectroscopy, and first-principle...
High bromine containing dimers of tetrabromoanthra- p -quinodimethane as appealing building-blocks for organic synthesis. Thorough study their isomerism and optoelectronic properties.
Nanocars are carbon-based single-molecules with a precise design that facilitates their atomic-scale control on surface. The rational of these molecules is important in atomic and molecular-scale manipulation to advance the development molecular machines, as well for better understanding self-assembly, diffusion desorption processes. Here, we introduce construction collection minimalistic nanocars. They feature an anthracene chassis four benzene derivatives wheels. After sublimation...
<title>Abstract</title> π-Conjugated polymers play a crucial role in modern organic optoelectronics and spintronics. However, key aspect remains unexplored: how to make π-conjugated polymer able host intrinsic solitons just by chemical design without the need of external doping. Exploiting on-surface synthesis address such challenge, we present novel reaction based on regio- stereo-selective coupling indenyl moieties for fabricating acenoindenylidene Au(111) surface, which feature...
On-surface chemistry represents a fast-growing field allowing to synthesize molecular structures not available by traditional wet chemistry. In this context, high-resolution scanning probe microscopy techniques are able provide unprecedented spatial resolution, precisely identify individual products of the reactions. Nevertheless, deep understanding reaction mechanism under conditions imposed substrate remains unknown. Nowadays, various computational strategies employed characterize optimal...
Surface-catalyzed reactions have been employed for the synthesis of carbon nanomaterials featuring precisely defined atomic structures. A recent breakthrough involves gold surface-catalyzed [3 + 3] cycloaromatization isopropyl-substituted arenes, allowing on-surface novel carbon-based polymers[1-3]. In this process, surface plays a crucial role in activating isopropyl substituents, facilitating formation phenylene rings through intermolecular coupling. For instance, such investigations might...
Abstract The design of novel low‐dimensional carbon materials is at the forefront modern chemistry. Recently, on‐surface covalent synthesis has emerged as a powerful strategy to synthesize previously precluded compounds and polymers. Here, we report scanning probe microscopy study, complemented by theoretical calculations, on sequential skeletal rearrangement sumanene‐based precursors into coronene‐based organometallic network stepwise intra‐ inter‐molecular reactions Au(111). Interestingly,...