A5083789848- Porphyrin and Phthalocyanine Chemistry
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Luminescence and Fluorescent Materials
- Photodynamic Therapy Research Studies
- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Supramolecular Self-Assembly in Materials
- Photochemistry and Electron Transfer Studies
- Electrocatalysts for Energy Conversion
- Metal-Catalyzed Oxygenation Mechanisms
- Molecular Junctions and Nanostructures
- Fullerene Chemistry and Applications
- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Perovskite Materials and Applications
- Organic Light-Emitting Diodes Research
- Graphene research and applications
- Electrochemical sensors and biosensors
- Radioactive element chemistry and processing
- Nanoplatforms for cancer theranostics
- Crystallography and molecular interactions
- Transition Metal Oxide Nanomaterials
- Catalytic Processes in Materials Science
- Polydiacetylene-based materials and applications
Instituto de Ciencia de Materiales de Madrid
2024-2025
Consejo Superior de Investigaciones Científicas
2024-2025
Trinity College Dublin
2021-2023
University of Crete
2015-2022
Technological University Dublin
2021
Technical University of Munich
2021
Institute for Advanced Study
2021
St Petersburg University
2021
Crete University Press
2018
University Hospital of Heraklion
2017
Approaches to enhance the performance of recent sensitizers employed in dye-sensitized NiO photocathodes for DSC and DSPEC devices are described.
Heavy-atom-free sensitizers forming long-living triplet excited states via the spin-orbit charge transfer intersystem crossing (SOCT-ISC) process have recently attracted attention due to their potential replace costly transition metal complexes in photonic applications. The efficiency of SOCT-ISC BODIPY donor-acceptor dyads, so far most thoroughly investigated class such sensitizers, can be finely tuned by structural modification. However, predicting state yields and reactive oxygen species...
A mononuclear CoIII complex (1) of a bisamide-bisalkoxide donor ligand was synthesized and thoroughly characterized. The reaction 1 with 0.5 equiv. m-chloroperbenzoic acid (m-CPBA) in acetonitrile at -40 °C resulted the formation μ-oxodicobalt(IV) (2), which characterized by an array spectroscopic techniques, including X-ray absorption spectroscopy revealed short Co-Ooxo distance 1.67 Å. Reactivity studies 2 towards oxidation/oxygenation hydrocarbon C-H bond triphenylphosphine or thioanisole...
This study reveals the reaction pathways of 2 Al-Fe earth-abundant photocatalytic systems for CO2 reduction through femto-nanosecond optical transient absorption and microsecond X-ray spectroscopies. Time-resolved experimental findings with time-dependent density functional theory illustrate formation an elusive FeI octahedral species bound aqua ligands lifetimes 23-29 μs.
Redox-inactive metal ions functioning as Lewis acids (LA) play a significant role in modulating the redox reactivity of metal–oxygen intermediates such metal-oxo, metal-superoxo, and metal-peroxo species. In photosystem II (PS-II), redox-inactive ion CaII is critical for O2 activation, although its precise function remains unclear. Inspired by nature's use ions, this study aims to characterize complexes high-valent Cu(III) bound acids, 2-M (where M = ZnII, EuIII, YbIII, ScIII), through...
In this work a peptide nucleic acid has been covalently linked with porphyrin and boron-dipyrromethene exhibiting self assembly properties light-harvesting capability.
The syntheses, the photophysical/electrochemical characterization, and first application in LECs of different metallated porphyrins are provided.
Polyoxometalate-amino acid hybrids (<bold>POM-F</bold>and<bold>POM-FF</bold>) self-assemble into spherical architectures with high reproducibility in several “good–bad” solvent mixtures.
Sequential photoinduced energy transfer followed by electron leading to the formation of charge separated states in a newly assembled series supramolecular triads comprised boron dipyrromethenes (BODIPY or BDP), aluminum porphyrin (AlTPP) and C60 is demonstrated. In present strategy, donor (BDP) acceptor (C60) were axially positioned plane AlTPP via central metal. The structural integrity synthesized compounds self-assembled systems fully established using spectral, electrochemical...
The synthesis as well the reversible self-assembly of a series BDP-FF conjugates are described. ECD studies revealed chiral nature obtained materials.
A Cu II complex and its one-electron oxidized analog were thoroughly characterized. The compound was found to be a iminoxyl radical complex.
In this study, a new modified C60 derivative with an oPE/oPPV conjugated bridge bearing two pyridyl groups has been used in combination flexible porphyrin dimer (ZnP2) to construct electron donor/acceptor hybrid (C60-dipyr·ZnP2). This is based on metal ligand coordination between the zinc centers of and that linker bears. order investigate interactions donor acceptor entities, both ground state excited states, comprehensive photophysical assays have carried out. particular, absorption...
Natural photosynthesis inspired the scientific community to design and synthesize molecular assemblies that possess advanced light-harvesting electron-transfer features. In this review, we present preparation photophysical investigation of novel porphyrin–fullerene hybrids acting as artificial photosynthetic systems. Porphyrinoids stand chlorophyll analogues have emerged suitable photosensitizers in supramolecular electron donor–acceptor hybrids. Fullerenes (C60) are versatile acceptors with...
A novel π-conjugated oligo(phenylenevinylene) (oPPV) (or <bold>LC</bold>) was prepared, as a new organic dye for dye-sensitized solar cells (DSSC), which contains cyanoacrylic acid group on one end and pyridyl the other.
Two novel zinc-metallated porphyrins, bearing three and six long alkoxy chains at the periphery, have been synthesized as sensitizers in DSSCs.
Abstract The utilization of solar energy via photoelectrochemical cells (PEC) towards hydrogen (H 2 ) production is a promising approach in the field artificial photosynthesis. In this work, synthesis and complete characterization first covalently linked porphyrin‐cobalt diimine‐dioxime dyad ( ZnP‐Co reported. synthetic procedure that was followed based on simple high yielding reactions, without using any noble metal. Photophysical investigation revealed sufficient electronic communication...
The synthesis, characterization, and application in light‐emitting electrochemical cells (LECs) of two near‐infrared (NIR)‐emitting Pt‐porphyrins (Pt‐por) with none or 20 F atoms their respective Pt‐por polyads containing from 1 to 4 BODIPY (BDP) units ( PtBDP ) connected via tetra‐fluorophenyl triazole spacer groups are reported. functionalization PtBDPs is tuned respect the number BDP optimizing 1) NIR emission through an efficient energy transfer core, 2) electronic structure decouple...
Abstract The time dependence of atropisomer interconversion has limited the pursuit single drug candidates, even in circumstances where one presents favorable biological activity over another. Moderate energy barriers risk compromising stability. As a result, examples atropisomerically pure drugs current clinical use are rare. However, recent years, there been shift towards development single, stable candidates with enhanced activity. Consequently, methods which effectively restrict rotation...
Free base 5,10,15,20-tetrakis(4-carboxylatophenyl)porphyrin stands for the class of powerful porphyrin photosensitizers singlet oxygen generation and light-harvesting. The atomic level selectivity dynamic UV pump - N K-edge probe X-ray absorption spectroscopy in combination with time-dependent density functional theory (TD-DFT) gives direct access to crucial excited molecular states within unusual relaxation pathway. efficient intersystem crossing, that is El-Sayed forbidden not facilitated...
Three covalently linked donor–acceptor zinc porphyrin–fullerene (ZnP–C<sub>60</sub>) dyads were tested as sensitizers in NiO-based dye-sensitized solar cells (DSCs).
Abstract Two A 2 B type free base porphyrins have been synthesized and examined as hole−transporting materials (HTMs) in perovskite solar cells (PSCs). These molecules contain a porphyrin ring π −spacer, two N,N’ ‐dimethylphenyl groups either phenylcarboxylic acid or phenyl‐methyl‐ester units respectively. chosen alternative HTMs to the well−known Spiro‐MeOTAD (N2,N2,N2′,N2′,N7,N7,N7′,N7′‐octakis(4‐methoxyphenyl)‐9,9′‐spirobi[9H‐fluorene]‐2,2′,7,7′‐tetramine) since exhibit high versatility...