A5083344039- Porphyrin and Phthalocyanine Chemistry
- Advanced Photocatalysis Techniques
- Electrocatalysts for Energy Conversion
- TiO2 Photocatalysis and Solar Cells
- CO2 Reduction Techniques and Catalysts
- Luminescence and Fluorescent Materials
- Advanced battery technologies research
- Supramolecular Self-Assembly in Materials
- Molecular Junctions and Nanostructures
- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Advanced Nanomaterials in Catalysis
- Polydiacetylene-based materials and applications
- Electrochemical sensors and biosensors
- Fuel Cells and Related Materials
- X-ray Diffraction in Crystallography
- Perovskite Materials and Applications
- Crystallization and Solubility Studies
- Click Chemistry and Applications
- Nanoplatforms for cancer theranostics
- Fullerene Chemistry and Applications
- Photodynamic Therapy Research Studies
- Synthetic Organic Chemistry Methods
- Chemical Synthesis and Analysis
- Transition Metal Oxide Nanomaterials
Chimie et Interdisciplinarité, Synthèse, Analyse, Modélisation
2023-2025
Centre National de la Recherche Scientifique
2024-2025
Institut Català d'Investigació Química
2022-2024
Nantes Université
2024
University of Crete
2015-2024
Laboratoire de Synthèse Organique
2024
National and Kapodistrian University of Athens
2023
Foundation for Research and Technology Hellas
2023
Institute of Science and Technology
2022
Crete University Press
2021
Approaches to enhance the performance of recent sensitizers employed in dye-sensitized NiO photocathodes for DSC and DSPEC devices are described.
Abstract Dye‐sensitized photocatalytic systems (DSPs) have been extensively investigated for solar‐driven hydrogen (H 2 ) evolution. However, their application in carbon dioxide (CO reduction remains limited. Furthermore, current CO ‐to‐CO DSPs typically employ rhenium complexes as catalysts. In this study, we developed that incorporate noble metal‐free components, specifically a zinc‐porphyrin photosensitizer (PS) and cobalt‐quaterpyridine catalyst (CAT). Taking significant stride forward,...
Abstract There is a growing interest in developing dye‐sensitized photocatalytic systems (DSPs) to produce molecular hydrogen (H 2 ) as alternative energy source. To improve the sustainability of this technology, we replaced sacrificial electron donor (SED), typically an expensive and polluting chemical, with alcohol oxidation catalyst. This study demonstrates first system using diketopyrrolopyrrole dye covalently linked 2,2,6,6‐tetramethyl‐1‐piperidine‐ N ‐oxyl (TEMPO) based catalyst for...
Copper-based tandem schemes have emerged as promising strategies to promote the formation of multi-carbon products in electrocatalytic CO2 reduction reaction. In such approaches, CO-generating component catalyst increases local concentration CO and thereby enhances intrinsic carbon-carbon (C-C) coupling on copper. However, optimal characteristics for maximizing C2 production are currently unknown. this work, we developed tunable catalysts comprising iron porphyrin (Fe-Por), component, Cu...
The syntheses, as well the photophysical and electrochemical characterization, of two novel BODIPY-porphyrin dyads their first application in lighting schemes are provided. benefits ascribed to unique features, namely (i) a good electronic alignment, (ii) remarkable efficient energy transfer, (iii) excellent film morphology, lead deep-red devices with stabilities around 1000 h efficiencies 0.13 Lm W(-1).
Solar-driven hydrogen evolution experiments utilizing fibrilar and spherical nanostructures of the same porphyrin–peptide hybrid.
Antimicrobial resistance (AMR) poses a significant global health risk as consequence of misuse antibiotics. Owing to the increasing antimicrobial resistance, it became imperative develop novel molecules and materials with properties. Porphyrins metalloporphyrins are compounds which present properties especially after irradiation. As consequence, porphyrinoids have recently been utilized agents in photodynamic inactivation bacteria other microorganisms. Herein, we report encapsulation...
Abstract A propeller‐shaped, triazine‐linked, unsymmetrical porphyrin triad – consisting of two zinc‐metallated units and one free‐base unit that is functionalized by a carboxylic acid has been synthesized stepwise amination reactions cyanuric chloride. Photophysical, electrochemical, DFT studies the revealed no significant electronic interactions between in ground state but frontier orbital energy levels suitable for use as sensitizer dye‐sensitized solar cells (DSSCs). Furthermore, can be...
A novel BODIPY-porphyrin triad is prepared with two BODIPY molecules covalently attached <italic>via</italic> a 1,3,5-triazine molecule to free-base carboxyphenyl <italic>meso</italic>-substituted porphyrin.
Branched polymers are a valuable class of polymeric materials. In the present study, anionic polymerization techniques were employed for synthesis low molecular weight poly(ethylene oxide) (PEO) macromonomers bearing norbornenyl end groups. The characterized by SEC, MALDI-TOF and NMR spectroscopy. Subsequent ring opening metathesis (ROMP) using ruthenium catalysts (Grubbs 1st, 2nd 3rd generations) afforded corresponding polymacromonomers. effects macromonomer weight, type catalyst, nature...
We report a comparison between series of zinc and tin porphyrins as photosensitizers for photochemical hydrogen evolution using cobaloxime complexes molecular catalysts. Among all the chromophores tested, only positively charged porphyrin, [ZnTMePyP4+]Cl4, neutral porphyrin derivatives, Sn(OH)2TPyP, Sn(Cl2)TPP-[COOMe]4, Sn(Cl2)TPP-[PO(OEt)2]4, were photocatalytically active. Hydrogen was strongly affected by pH value well different concentrations both sensitizer catalyst. A comprehensive...
Porphyrin complexes are present in many natural systems and have significant biological roles, such as light harvesting, oxygen transport, catalysis. Owing to their intrinsic aromatic structure, porphyrin derivatives exhibit characteristic photophysical electrochemical properties. Porphyrins porphyrin-based been extensively utilized biomedical applications during the last decade. Specifically, porphyrinoids tested agents antimicrobial photodynamic therapy, well imaging (e.g., diagnosis of...
Two novel porphyrin dyads (9 and 11) consisting of two zinc-metallated units, covalently linked at their peripheries through 1,2,3-triazole containing bridges functionalized by a terminal carboxylic acid group, have been synthesized via "click" reactions, which are Cu-catalyzed Huisgen 1,3-dipolar cycloadditions between azide- acetylene-containing porphyrins. Photophysical electrochemical measurements, together with DFT calculations, showed that the possess suitable frontier orbital energy...
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.
In the present work, we effectively modify TiO2 electron transport layer of organic solar cells with an inverted architecture using appropriately engineered porphyrin molecules. The results show that optimized modifier bearing two carboxylic acids as anchoring groups and a triazine electron-withdrawing spacer significantly reduces work function TiO2, thereby reducing extraction barrier. Moreover, lower surface energy porphyrin-modified substrate in better physical compatibility between...
In this work, the self assembly ability of chromophores covalently linked to aliphatic dipeptides is described. Altering various parameters such as protecting group, solvent mixture, dipeptide and chromophore resulted in different nanostructures. Interestingly, a peptide-porphyrin hybrid capable forming hydrogel HFIP-water mixture.
Abstract In this study, a highly efficient photocatalytic H 2 production system is developed by employing porphyrins as photocatalysts. Palladium and platinum tetracarboxyporphyrins (PdTCP PtTCP) are adsorbed or coadsorbed onto TiO nanoparticles (NPs), which act the electron transport medium scaffold that promotes self‐organization of porphyrinoids. The PdTCP PtTCP, forming H‐ J‐aggregates, respectively, key element for evolution, in absence NPs no catalytic activity detected. Notably,...
In this study, we report the utilization of BODIPY-(Zn)Porphyrin hybrids in photocatalytic H2 production from water. These entities were applied as photosensitizers upon their chemisorption onto surface platinum-doped titanium dioxide nanoparticles (Pt-TiO2), which acted photocatalysts. To evaluate impact different connectivity between chromophores evolution, employed two diverse entities, BODIPY moiety is either covalently attached (BDP-Por) or axially coordinated (BDP(Im)-Por) with...
Abstract Dye‐sensitized photocatalytic systems (DSPs) have been extensively investigated for solar‐driven hydrogen (H 2 ) evolution. However, their application in carbon dioxide (CO reduction remains limited. Furthermore, current CO ‐to‐CO DSPs typically employ rhenium complexes as catalysts. In this study, we developed that incorporate noble metal‐free components, specifically a zinc‐porphyrin photosensitizer (PS) and cobalt‐quaterpyridine catalyst (CAT). Taking significant stride forward,...