A5080108588- Photodynamic Therapy Research Studies
- Nanoplatforms for cancer theranostics
- Porphyrin and Phthalocyanine Chemistry
- Fullerene Chemistry and Applications
- Photochemistry and Electron Transfer Studies
- bioluminescence and chemiluminescence research
- TiO2 Photocatalysis and Solar Cells
- Photochromic and Fluorescence Chemistry
- Luminescence and Fluorescent Materials
- Algal biology and biofuel production
- Analytical Chemistry and Chromatography
- Advanced Photocatalysis Techniques
- Insect Pest Control Strategies
- Ocular Infections and Treatments
- Analytical Chemistry and Sensors
- Antimicrobial agents and applications
- Chemical Reactions and Mechanisms
- Marine and coastal ecosystems
- Essential Oils and Antimicrobial Activity
- Organic Light-Emitting Diodes Research
- Polydiacetylene-based materials and applications
- Mycotoxins in Agriculture and Food
- Antifungal resistance and susceptibility
- Microplastics and Plastic Pollution
- Water Resource Management and Quality
Consejo Nacional de Investigaciones Científicas y Técnicas
2007-2024
National University of Río Cuarto
2015-2024
A porphyrin-fullerene C60 dyad (TCP-C60) substituted by carbazoyl groups was used to obtain electrogenerated polymeric films on optically transparent indium tin oxide (ITO) electrodes. This approach produced stable and reproducible polymers, holding fullerene units. The properties of this film were compared with those formed layers TCP/TCP-C60 TCP/ZnTCP. Absorption spectra the presented Soret Q bands corresponding porphyrins. TCP-C60 a high photodecomposition...
Abstract A covalently linked BODIPY−fullerene C 60 dyad (BDP−C ) was synthesized as a two‐segment structure, which consists of visible light‐harvesting antenna attached to an energy or electron acceptor moiety. This structure designed improve the photodynamic action fullerene inactivate bacteria. The absorption spectrum BDP−C found be superposition spectra its constitutional moieties, whereas fluorescence emission BODIPY unit strongly quenched by . Spectroscopic, calculations, and redox...
ABSTRACT: Natural phytochemicals may be an alternative to synthetic chemicals for controlling fungal growth and mycotoxin production in stored maize. A key progress this field is select the best natural maize applied a storage ecosystem. This research was undertaken evaluate effects of trans‐cinnamic acid (CA) ferulic (FA) alone at concentrations 20 30 mM 5 combinations on Aspergillus flavus Link A. parasiticus Speare populations aflatoxin B 1 production. Studies population were carried out...
Chromophore-fullerene C60 hybrids possess interesting properties that enable them to act as heavy atom-free photosensitizers and reactive oxygen species (ROS) producers. Here, two new diketopyrrolopyrrole-C60 conjugates were efficiently synthesized characterized. The show broadband absorption in the visible spectral region, which diketopyrrolopyrrole dyes light-harvesting antenna with very high capacity populate excited triplet states. Furthermore, ability of systems generate singlet...
The assessment of thiazolothiazoles (TzTz) as photosensitizers in photodynamic inactivation (PDI) experiments is reported for the first time. Mono and dicationic TzTz derivatives were synthesized, their photosensitizing ability was assessed on Staphylococcus aureus cells, both suspension or attached to a surface, using white light. biological results showed that efficiency these dependent structure irradiation best obtained with monocationic derivative TPATzTzPyMe+ allowed reach value over 7...
Abstract A novel chlorin derivative (TPCF 20 ‐NMe 2 ) has been synthesized as a syn adduct of pyrrolidine‐fused bearing C‐linked N , ‐dimethylaminophenyl residue. The absorption spectrum TPCF is essentially identical to that in ‐dimethylformamide, indicating very weak interaction between the macrocycle and amine group ground state. However, fluorescence emission moiety effectively quenched by attached unit. Moreover, unable attain triplet excited state or photosensitize singlet molecular...
A nanoplatform concept was developed to synthesize accessible photoactive magnetic nanoparticles (MNPs) of Fe3O4 coated with silica. This approach based on the covalent binding 5,10,15,20-tetrakis(pentafluorophenyl)porphyrin (TPPF20) aminopropyl-grafted MNPs by nucleophilic aromatic substitution reaction (SNAr) obtain conjugate MNP-P1. After in situ modification, remaining pentafluorophenyl groups TPPF20 attached were substituted dimethylaminoethoxy form MNP-P2. The basic amine group these...
In this study, the phytoplankton structure of a freshwater reservoir located in central Argentina (Embalse Río Tercero) was analyzed using Beutler's method (Photosynthesis Research 72: 39-53, 2002), aiming to provide water quality control agencies with reliable tool for early detection algae blooms, particularly cyanobacteria. The estimated concentration chlorophyll (Chl a) contributed by individual algal groups real sample fitting its fluorescence excitation spectrum linear combination norm...
Diketopyrrolopyrrole (DPP) derivatives containing sulfonamide (Sulfonamide-DPP), pyridyl (Dipyridyl-DPP) and N-methylpyridyl (MePyridyl-DPP) substituents were assessed as antibacterial photosensitizers. Non-charged DPPs showed an intense absorption band centered at about 480 nm green fluorescence emission (ΦF ~ 0.7) in acetonitrile. The of MePyridyl-DPP was bathochromically shifted 510 nm, with decreased emission. Sulfonamide-DPP Dipyridyl-DPP photosensitized the formation O2 (1 Δg ) (ΦΔ...
The consumption of fruits and vegetables in the daily diet is an adequate condition for obtaining a healthy life. Therefore, decontamination crucial to reducing appearance potentially dangerous microorganisms these foods. In this work, conjugate (CS–PPIX) natural origin was synthesized from covalent union protoporphyrin IX (PPIX) chitosan (CS) by amide bonds. This photosensitizer developed reduce microbial load food packaging through photodynamic inactivation (PDI). A film CS–PPIX showed...