A5090364175- Surface Chemistry and Catalysis
- Molecular Junctions and Nanostructures
- Surface and Thin Film Phenomena
- Magnetic properties of thin films
- Graphene research and applications
- Analytical Chemistry and Chromatography
- Analytical Methods in Pharmaceuticals
- Quantum Dots Synthesis And Properties
- Fullerene Chemistry and Applications
- nanoparticles nucleation surface interactions
- Porphyrin and Phthalocyanine Chemistry
- Semiconductor materials and devices
- Theoretical and Computational Physics
- Chalcogenide Semiconductor Thin Films
- Advanced Materials Characterization Techniques
- Microfluidic and Capillary Electrophoresis Applications
- Semiconductor materials and interfaces
- Analytical Chemistry and Sensors
- Transition Metal Oxide Nanomaterials
- Synthesis and Properties of Aromatic Compounds
- Magnetic Properties and Applications
- Magnetism in coordination complexes
- ZnO doping and properties
- Lanthanide and Transition Metal Complexes
- Copper-based nanomaterials and applications
Instituto de Ciencia de Materiales de Madrid
2015-2025
Madrid Institute for Advanced Studies
2008-2025
Consejo Superior de Investigaciones Científicas
1998-2024
IMDEA Nanoscience
2013-2023
IMDEA Food
2022
Instituto de Ciencia de Materiales de Sevilla
2018
Universidad Autónoma de Madrid
1993-2014
University of Castilla-La Mancha
1993-2012
Material Physics Center
2010
Universidad Complutense de Madrid
2007-2009
During the last decade, interest on growth and self-assembly of organic molecular species solid surfaces spread over scientific community, largely motivated by promise cheap, flexible tunable electronic optoelectronic devices. These efforts lead to important advances in our understanding nature strength non-bonding intermolecular interactions that control assembly building blocks surfaces, which have been recently reviewed a number excellent papers. To large extent, such studies were...
The design of open-shell carbon-based nanomaterials is at the vanguard materials science, steered by their beneficial magnetic properties like weaker spin-orbit coupling than that transition metal atoms and larger spin delocalization, which are potential relevance for future spintronics quantum technologies. A key parameter in exchange (MEC) between unpaired spins, should be large enough to allow device operation practical temperatures. In this work, we theoretically experimentally explore...
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...
Cobalt-copper single-crystal superlattices were grown by epitaxy on a Cu(100) substrate with different bilayer thicknesses between 20 and 30 A\r{}. Polarized unpolarized neutron-diffraction characterization shows good structural quality antiferromagnetic ordering of the at zero field magnetic moments in film plane. Magnetization measurements are consistent neutron data, showing moment very close to saturation value bulk cobalt (1.7${\ensuremath{\mu}}_{B}$) as well complex dependence applied field.
The reaction between 1,3,5-tris(4-hydroxyphenyl)benzene and benzene-1,3,5-tricarbonyl trichloride leads to polyester condensation formation of a novel COF on an Au(111) surface. characterization performed in situ by means variable temperature STM XPS reveals the array hexagonal cavities with ca. 2 nm size.
Abstract On-surface synthesis is a promising strategy for engineering heteroatomic covalent nanoarchitectures with prospects in electronics, optoelectronics and photovoltaics. Here we report the thermal tunability of reaction pathways molecular precursor order to select intramolecular versus intermolecular reactions, yielding monomeric or polymeric phthalocyanine derivatives, respectively. Deposition tetra-aza-porphyrin species bearing ethyl termini on Au(111) held at room temperature...
Halogen compounds are capable of playing an important role in the manipulation nanoparticle shapes and properties. In a new approach, we examined shape evolution CdSe nanorods to hexagonal pyramids hot-injection synthesis under influence halogenated additives form organic chlorine, bromine iodine compounds. Supported by density functional theory calculations, this is explained as result X-type ligand coordination sloped flat Cd-rich facets equilibrium strongly influenced halides. Synchrotron...
Experiments and simulations on the effect of a surfactant atomic diffusion are presented. Cu adatoms deposited Cu(111) surface covered with monolayer Pb quickly get buried diffuse under layer by exchanging sites other atoms from substrate. The induces layer-by-layer growth suppressing hopping mechanism over terraces promoting exchange, both at across steps. This may be rather general has profound implications for synthesis artificial materials.
The composition of the interface resulting from room-temperature deposition iron on Si(100) under ultrahigh-vacuum conditions has been monitored by surface-sensitive techniques such as Auger electron spectroscopy, low-energy diffraction, and photoemission spectroscopy with synchrotron radiation. results show unequivocally that Fe/Si is not abrupt, but rather an amorphous intermixed region close to ${\mathrm{Fe}}_{3}$Si. formation this silicidelike layer related metallization deposited Fe...
The formation of iron silicides has been monitored by a variety surface sensitive techniques such as Auger electron spectroscopy, energy loss and low diffraction (LEED). deposition Fe onto Si(100) at room temperature results in layer-by-layer growth polycrystalline with some Si interdiffused into the growing film. extent reaction silicide is very limited temperature. These two observations contradict previous reports. Formation solid phase epitaxy occurs (325 °C). first compound formed can...
Polycyclic aromatic hydrocarbons (PAHs) are a family of organic compounds comprising two or more fused rings which feature manifold applications in modern technology. Among these species, those presenting an open-shell magnetic ground state particular interest for electronic, spintronic, and non-linear optics energy storage devices. Within PAHs, special attention has been devoted recent years to the synthesis study acene (periacene) families, steered by their decreasing HOMO–LUMO gap with...
The synthesis of novel polymeric materials with porphyrinoid compounds as key components the repeating units attracts widespread interest from several scientific fields in view their extraordinary variety functional properties potential applications a wide range highly significant technologies. vast majority such polymers present closed-shell ground state, and, only recently, result improved synthetic strategies, engineering open-shell spin delocalization along conjugation length has been...
The exchange anisotropy of Ni80Fe20 (permalloy) films deposited onto bulk single crystal CoO substrates using molecular-beam epitaxy is strongly affected by the interface structure. Contrary to expectations for uncompensated interfaces, loop shift increases samples with greater disorder. results are discussed in light proposed models. suggest that antiferromagnet domain dynamics an important part mechanism.
With increasing coverage, self-assembly of the fullerene derivative phenyl-C61-butyric acid methyl ester (PCBM) on Au(111) undergoes a transition from substrate-controlled to hydrogen-bond-controlled. At low coverages, PCBM nucleates exclusively at fcc areas “herringbone” reconstruction (left image). higher double rows molecules connected through hydrogen bonds are formed (right ML: monolayer. Supporting information for this article is available WWW under...
We report on the conformation and self-assembly properties of meso-tetramesitylporphyrin Cu(100). The results show that presence mesityl groups limits interaction between porphyrin ring copper surface, contributing to high mobility at room temperature. At low temperatures it is substrate which determines molecule orientation. intermolecular also very weak, only for coverages do porphyrins self-assemble form large islands with two different mirror symmetric unit cells. can be Fe metalated by...
Lanthanide‐based metal–organic compounds and architectures are promising systems for sensing, heterogeneous catalysis, photoluminescence, magnetism. Herein, the fabrication of interfacial 2D lanthanide‐carboxylate networks is introduced. This study combines low‐ variable‐temperature scanning tunneling microscopy (STM) X‐ray photoemission spectroscopy (XPS) experiments, density functional theory (DFT) calculations addressing their design electronic properties. The bonding ditopic linear...