A5017257760- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- Surface Modification and Superhydrophobicity
- Polymer Surface Interaction Studies
- Per- and polyfluoroalkyl substances research
- Photonic Crystals and Applications
- Traditional and Medicinal Uses of Annonaceae
- Organic Electronics and Photovoltaics
- Surfactants and Colloidal Systems
- African Botany and Ecology Studies
- Adhesion, Friction, and Surface Interactions
- Moringa oleifera research and applications
- Anodic Oxide Films and Nanostructures
- Supercapacitor Materials and Fabrication
- Silicone and Siloxane Chemistry
- biodegradable polymer synthesis and properties
- Nanopore and Nanochannel Transport Studies
- Phytochemicals and Antioxidant Activities
- Ginkgo biloba and Cashew Applications
- Silk-based biomaterials and applications
- Electrophoretic Deposition in Materials Science
- Natural Compound Pharmacology Studies
- Molecular Junctions and Nanostructures
- Phytochemistry and biological activity of medicinal plants
- Polymer composites and self-healing
Cheikh Anta Diop University
2013-2025
Laboratoire de Chimie Organique
2022
Centre National de la Recherche Scientifique
2013-2014
Université Côte d'Azur
2014
Abstract We report a bioinspired approach to tune surface nanostructures by soft‐template electropolymerization in micellar condition. Monomers highly favoring π‐stacking interactions are particularly interesting for depositing one direction resulting vertically aligned nanotubes. Here, inducing very strong π ‐stacking interactions, triphenylamine building block was selected and substituted two substituents of different electronegativity (fluorine F methoxy OMe). These synthons were...
Abstract Bio‐inspired by natural species and previous research works, nanotubes are prepared soft‐template electropolymerization in micellar solution. Various thiophene‐based carbazole‐based monomers designed from a triphenylamine core. With one of the monomers, which is fully conjugated with star‐like structure, gecko‐like surface structures obtained even if structure not perfectly planar. Extremely long densely packed‐microtubes reached especially at constant potential. However, surfaces...
In this work, we present the synthesis of original thieno[3,4-b]thiophene monomers with rigid substituents (e.g., perfluorinated chains, and aromatic groups) demonstrate ability to prepare nanotubular nanoporous structures via templateless, surfactant-free electropolymerization in organic solvents (dichloromethane). For majority synthesized monomers, including a significant amount water solvent leads formation membranes tunable size surface hydrophobicity. If is not included solvent, most...
Superhydrophobic and oleophobic surfaces are obtained by electrodeposition of original PEDOT derivatives containing two short fluorinated chains. The liquid-repellent properties due to the combination high intrinsic hydrophobicity oleophobicity polymers presence chains, formation wrinkles spherical particles induced process. as a consequence surface is correlated chain length electrochemical parameters (the deposition charge for depositions at constant potential scan rate number scans cyclic...
An easy synthetic procedure in two or three steps from perfluoroalkylethyl iodide derivatives led to six novel fluorinated carboxylates monomeric and gemini surfactants with one hydrophobic tails, respectively: RF(C2H4)CH(CO2(-))2,2Na(+) [RF(C2H4)]2C(CO2(-)),Na(+), where RF = C4F9, C6F13, C8F17. These anionic exhibited very low surface tension 15 33 mN/m as well critical micelle concentration until 1.3 × 10(-4) mol/L. Furthermore, the properties of compound short fluoroalkyl chains (RF C4F9)...
Phytochemical screening and assay of secondary metabolites, crude extracts with distilled water, aqueous methanol, acetone ethanol leaves seeds Senna occidentalis L. were studied in this work. The aim was to verify the distribution metabolites according S. organs. Four leaf samples from four different localities (South, East, West Central Senegal) a mixed sample used. Functional molecules such as polyphenols, flavonoids tannins then assessed using various standard methods. results show that...
Abstract We report a bioinspired approach to tune surface nanostructures by soft‐template electropolymerization in micellar conditions. Monomers highly favoring π‐stacking interactions are particularly interesting for the polymer deposition one direction. Here, original triphenylamine‐based monomers di‐substituted thiophene and carbazole investigated. Conjugated building blocks tested favor vs polymerization, even if not perfectly planar. The derivatives have much higher electrodeposition...
Preparing well-ordered nanotubes on materials surface is a great of interest in many applications. Bio-inspired and theoretical approaches show that porous structures such as are key parameters for both hydrophobicity water adhesion. Here, very easy soft-template electropolymerization approach used to form nanotubular structures, followed by bioinspired strategy control the wetting properties. Fully conjugated monomers based 3,4-(2,3- naphtylenedioxy)thiophene (NaphDOT) core grafted with...
The main objective of the present study is to focus on evaluation secondary metabolites composition and antioxidant activity hydro – ethanolic extracts <i>Annona senegalensis</i> leaves stem bark which used in traditional medicine against several kind diseases. yields hydro-ethanolic organs (leaves Stem bark) were determined, followed by phytochemical screening amount metabolites, using conventional analytical methods. Anti-radical was carried out DPPH (2,...
La nécessité d’habilitation des plantes utilisées en médecine traditionnelle africaine a suscité investigations sur Moringa oleifera dont les connaissances restent empiriques. L’objectif de ce travail était faire l’inventaire différents usages médicaux et alimentaires du oleifera. C’est dans cadre, qu’une étude ethnobotanique été menée deux régions Sénégal entre décembre 2022 février 2023 auprès 102 personnes. Les résultats ont montré que feuilles graines étaient organes plus utilisés...
Inspired by the strong water adhesion found in gecko feet and rose petals, surfaces with nanotubes are prepared soft-template electropolymerization.
Abstract Bioinspired by the strong water‐adhesive forces of gecko foot or rose petals, here, nanotubular structures are prepared soft‐template electropolymerization. Water is mixed to a solvent low water‐solubility form micellar solution in presence tetrabutylammonium perchlorate as electrolyte and surfactant. As monomer, benzene trifunctionalized with various thiophene carbazole moieties. The monomers fully conjugated favor deposition compared polymerization, confirmed cyclic voltammetry...
Abstract Here, various original benzotrithiophene‐based monomers are synthesized and studied for their capacity to form nanoporous structures by soft‐template electropolymerization in organic solvent while studying the influence of water (H 2 O). especially observed saturated with H O, substituent has on size porous structures. The highest hydrophobic properties Θ w =141.1° obtained perfluorooctyl chains ( BTT‐F 8 ), which leads a huge number extremely small size. Moreover, surfaces have...
En Afrique, notamment dans les zones rurales, la modicité des moyens de subsistance prédispose populations à se détourner médicaments modernes onéreux et souvent inaccessibles. Le coût disponibilité ces principes actifs rendent quasiment, hors portée d’une grande majorité populations. La phytothérapie base d'extraits plantes est une pratique courante médecine traditionnelle africaine. C’est ce cadre que s’inscrit travail, dont l’objectif était lister vertus thérapeutiques alimentaires...