A5064752503- Supramolecular Self-Assembly in Materials
- Lipid Membrane Structure and Behavior
- Polydiacetylene-based materials and applications
- Advanced Polymer Synthesis and Characterization
- Luminescence and Fluorescent Materials
- Surfactants and Colloidal Systems
- Supramolecular Chemistry and Complexes
- Polymer Surface Interaction Studies
- Porphyrin and Phthalocyanine Chemistry
- Chemical Synthesis and Analysis
- Pickering emulsions and particle stabilization
- Innovative Microfluidic and Catalytic Techniques Innovation
- RNA Interference and Gene Delivery
- Advanced biosensing and bioanalysis techniques
- Block Copolymer Self-Assembly
- Molecular Junctions and Nanostructures
- Quantum Dots Synthesis And Properties
- Catalytic Cross-Coupling Reactions
- Photochromic and Fluorescence Chemistry
- Polymer Nanocomposites and Properties
- Nanoparticle-Based Drug Delivery
- Hydrogels: synthesis, properties, applications
- Mesoporous Materials and Catalysis
- Proteins in Food Systems
- Bacteriophages and microbial interactions
Institut Charles Sadron
2016-2025
Université de Strasbourg
2016-2025
Centre National de la Recherche Scientifique
2016-2025
Institut de génétique et de biologie moléculaire et cellulaire
1996-2023
Inwood Community Services
2023
University of Puerto Rico at Carolina
2017-2020
Centre National pour la Recherche Scientifique et Technique (CNRST)
2010
Steacie Institute for Molecular Sciences
2008
Swiss Epilepsy Center
2008
Institut de Science et d'Ingénierie Supramoléculaires
2008
Programmed self-assembly of well-defined molecular building blocks enables the fabrication precisely structured nanomaterials. In this work, we explore a new class giant polymeric surfactants (Mn = (0.7–4.4) × 106 g/mol) with bottlebrush architecture and show that their persistent shape leads to formation uniform aggregates in predictable manner. Amphiphilic block copolymers containing polylactide (PLA) poly(ethylene oxide) (PEO) side chains were synthesized by grafting-from method, aqueous...
By connecting monomers through an array of six hydrogen bonds, as shown, supramolecular polymers have been generated. They form fibers and a variety different materials depending on conditions such solvent, stoichiometry, the addition end-capping cross-linking agents. Supramolecular polymer chemistry offers novel perspectives entry to dynamic combinatorial materials. are described that derived from association two homoditopic heterocomplementary sextuple hydrogen-bonding arrays. conditions....
Well organized! A new class of phosphorescent materials was obtained by the coupling trialkylgallate-functionalized alkynes to a planar PtII terpyridine unit. Pt⋅⋅⋅Pt interactions in these complexes lead formation highly colored organogels and columnar liquid crystals (see picture). Amide groups linking gallate alkyne units provide additional stabilization structures through hydrogen bonding. Supporting information for this article is available on WWW under...
Supramolecular gels and liquid-crystalline materials containing borondipyrromethene (F-Bodipy) are a new class of highly luminescent built by attachment long-chain alkoxydiacylamido scaffoldings to boradiazaindacene templates. Robust were formed in nonane, luminescence spectroscopy was used probe the aggregation processes flat indacene cores. Coincidently, columnar mesophase obtained from pure material over wide temperature range, allowing textural observations fluorescence microscopy.
Polymer vesicles, also named polymersomes, are valuable candidates for drug delivery and micro- or nanoreactor applications. As far as is concerned, the shape of carrier believed to have a strong influence on biodistribution cell internalization. Polymersomes can be submitted an osmotic imbalance when injected in physiological media leading morphological changes. To understand these stress-induced variations membrane properties shapes, several nanovesicles made graft polymer...
The conformational information of an oligoheterocyclic strand containing a repeating pyridine - pyridazine codon self-organizes into helical molecular unit, which subsequently self-assembles fibers and macrofibers in dichloromethane pyridine. spontaneous formation structures is based on general self-organization process enforced by the encoded within itself.
The phase behavior of aqueous solutions several dissymmetric gemini surfactants (with two hydrophobic chains different lengths) was studied. From rheological and X-ray scattering studies as well from freeze fracture imaging, some general patterns the were observed which are remarkably those for monomeric surfactants. sequence phases with increasing surfactant concentration an isotropic wormlike micellar phase, multilayered structures first then organized orientational ordering, inverted...
The present paper reports the successful elaboration of exfoliated plasticized starch-based nanobiocomposites. This was made possible by using cationic starch as a new clay organomodifier to better match polarity matrix and thus facilitate exfoliation process. To demonstrate efficiency this approach, either natural (MMT-Na) or organomodified (OMMT-CS) montmorillonite were incorporated into nanobiocomposites melt blending morphological analyses (SAXD TEM) showed that MMT-Na leads formation...
The direct observation of a shear-induced structure in dilute/semidilute giant micellar solutions water is reported. At rest, the micelles are randomly oriented and zero-shear viscosity concentration dependent varies between 10-3 10-2 Pa s. Under shear, have no measurable anisotropy as long applied shear rate less than critical value determined from optical birefringence electric conductivity measurements. Above this "critical rate", increases, solution becomes strongly anisotropic. However,...
A readily synthesized dipeptide shows unprecedented gelation behavior when dispersed and submitted to ultrasound in nonsolvents. SEM FFEM revealed spectacular shape changes from a sheet-like material into highly interconnected fiber network ribbons while the maintains an anti conformation inside β-sheets at molecular scale.
Hybrids, i.e., intimately mixed polymer/phospholipid vesicles, can potentially marry in a single membrane the best characteristics of two separate components. The ability amphiphilic copolymers and phospholipids to self-assemble into hybrid membranes has been studied until now on submicrometer scale using optical microscopy giant unilamellar vesicles (GHUVs), but limited information is available large (LHUVs). In this work, based poly(dimethylsiloxane) poly(ethylene oxide) with different...
Amphiphilic copolymers with bottlebrush architecture provide opportunities for the refinement of materials properties that may not be attainable from their linear analogues. In this study, we investigated effect polymer on an interplay between molecular packing inside micelle cores, cargo loading, and core cross-linking. Four families polylactide-b-poly(ethylene oxide) (PLA–PEO) block different side-chain arrangements were synthesized by a combination grafting-through grafting-from methods....
Hybrid polymer/lipid large unilamellar vesicles (LUVs) were studied by small angle neutron scattering (SANS), time-resolved Förster resonance energy transfer (TR-FRET), and cryo-transmission electron microscopy (cryo-TEM). For the first time in hybrid vesicles, evidence for phase separation at nanoscale was obtained, leading to formation of stable nanodomains enriched either lipid or polymer. This stability allowed using vesicle-forming copolymer with a membrane thickness close bilayer...
Supramolecular hydrogels formed through noncovalent interactions of low-molecular-weight hydrogelators (LMWHs) show great potential applications in different fields, such as delivery therapeutics, injectable biomaterials, catalysis, or materials chemistry. Generally, the self-assembly LMWHs is triggered by a sol–gel process an external stimulus able to switch their solubility, temperature, pH, solvent change and chemical enzymatic reactions. In this work, we introduced new strategy trigger...
Abstract Here efficient organic photovoltaic devices fabricated from water‐based colloidal dispersions with donor:acceptor composite nanoparticles achieving up to 9.98% power conversion efficiency (PCE) are reported. This high for water processed solar cells is attributed morphology control by surface energy matching between the donor and acceptor materials. Indeed, due a low interfacial acceptor, no large phase separation occurs during nanoparticle formation process as well upon thermal...
The linear oligo-isophthalamide strand 1 undergoes a conformational reorganization upon binding of cyanuric acid template as effector to afford helical disklike object possessing radially disposed alkyl residues. Solvophobic and stacking interactions, in turn, drive "second level" self-assembly the templated structure, disks, yield fibers revealed by electron microscopy. These data provide insight into interplay different structural interactional features molecular components towards...
Alternating naphthyridine–pyrimidine strands self-organize into a helical conformation containing strongly polar cavity. The binding of metal and ammonium cations promotes supramolecular self-assembly in sort effector-induced growth process to form polymolecular stacks (see schematic representation) fibers observable by electron microscopy. Such entities offer features molecular ion channels.
Unraveling the factors that control conformation of molecular chains is great interest both for understanding shape biological strands and designing artificial ones adopt desired forms. Thus, a variety folding codons have been identified enforce formation, among others, helices, strands, loops, major emphasis being on foldamer. We report herein synthesis study family foldamers macrocycles based 1,8-naphthyridine pyrimidine units, whose internal cavity large enough to accommodate ionic...
Radical step-growth photopolymerization of dithiol–diene monomer miniemulsion is shown to be a highly efficient, robust, and versatile route generate film-forming linear poly(thioether) latexes. At extremely fast rates, the process results in high-molecular-weight polysulfide products, exhibiting both semicrystalline oxidation-responsive properties. Four key issues are addressed as regards practical implementation this novel UV-driven waterborne technology: preparation photolatent...