A5101529505- Supramolecular Self-Assembly in Materials
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Luminescence and Fluorescent Materials
- Supramolecular Chemistry and Complexes
- Lubricants and Their Additives
- Petroleum Processing and Analysis
- Polydiacetylene-based materials and applications
- Polymer Science and Applications
- Tribology and Wear Analysis
- Synthesis and characterization of novel inorganic/organometallic compounds
- Photoreceptor and optogenetics research
- Organometallic Complex Synthesis and Catalysis
- Molecular Sensors and Ion Detection
- Organoboron and organosilicon chemistry
- Material Properties and Applications
- Inorganic and Organometallic Chemistry
- Micro and Nano Robotics
- Surfactants and Colloidal Systems
- Phase Equilibria and Thermodynamics
- Organic Chemistry Cycloaddition Reactions
- DNA and Nucleic Acid Chemistry
- Advanced Polymer Synthesis and Characterization
- Synthesis and Properties of Aromatic Compounds
- biodegradable polymer synthesis and properties
Centre National de la Recherche Scientifique
2010-2024
École Pratique des Hautes Études
2024
Université de Perpignan
2023-2024
Labex Corail
2024
Institut Charles Sadron
2012-2019
Université de Strasbourg
2012-2019
Laboratoire de Physique et Chimie des Nano-Objets
2006-2018
Université de Toulouse
2009-2018
Université Toulouse III - Paul Sabatier
2007-2011
Softmat - Chimie des colloïdes, polymères & assemblages complexes
2011
The implementation of molecular machines in polymer science is high interest to transfer mechanical motions from nanoscale macroscale order access new kinds active devices and materials. Toward this objective, thermodynamic topological aspects need be explored for reaching efficient systems capable producing a useful work. In paper we describe the branched polymerization pH-sensitive bistable [c2] daisy chain rotaxanes by using copper(I)-catalyzed Huisgen 1,3-dipolar cycloaddition ("click...
Organic materials exhibiting metallic behavior are promising for numerous applications ranging from printed nanocircuits to large area electronics. However, the optimization of electronic conduction in organic metals such as charge-transfer salts or doped conjugated polymers requires high crystallinity, which is detrimental their processability. To overcome this problem, combination properties metal-like with mechanical soft self-assembled systems attractive but necessitates absence...
Open AccessCCS ChemistryMINI REVIEW1 Apr 2019[c2]Daisy Chain Rotaxanes as Molecular Muscles Antoine Goujon, Emilie Moulin, Gad Fuks and Nicolas Giuseppone Goujon SAMS Research Group, Institut Charles Sadron, CNRS, University of Strasbourg BP 84047, cedex 2 (France) , Moulin *Corresponding author: E-mail Address: [email protected] https://doi.org/10.31635/ccschem.019.20180023 SectionsAboutAbstractPDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked InEmail...
Abstract An acid–base switchable [ c 2]daisy chain rotaxane terminated with two 2,6‐diacetylamino pyridine units has been self‐assembled a bis(uracil) linker. The complementary hydrogen‐bond recognition patterns, together lateral van der Waals aggregations, result in the hierarchical formation of unidimensional supramolecular polymers associated bundles muscle‐like fibers. Microscopic and scattering techniques reveal that mesoscopic structure these depends on extended or contracted states...
The study of supramolecular polymers in the bulk, diluted solution, and at solid-liquid interface has recently become a major topic interest, going from fundamental aspects to applications materials science. However, examples liquid-liquid are mostly unexplored. Here, we describe polymerization triarylamine molecules their light-triggered organization chloroform-water interface. resulting interfacial nematic layer these 1D is further used as template for precise alignment spherical gold...
Dynamic covalent iminofluorene-based oligomers and polymers have been generated. They undergo constitutional recomposition under the effect of two parameters, acidity ZnII metal ions. As a result, marked changes in physical properties take place. The results illustrate response such dynamic system to chemical effectors (H+ nd ZnII), thus demonstrating adaptive behavior pressure external factors. also point possibility modulating optical (UV-visible absorption fluorescence) by specific...
A family of triarylamine-fullerene conjugates has been synthesized and shown to self-assemble upon light stimulation in chlorinated solvents. This light-induced process primarily involves excitation triarylamine derivatives, which then oxidize stack with their neutral counterparts form charge transfer complexes the p-conducting channels, while fullerenes are consequently enforced coaxial n-conducting columnar arrangements. These supramolecular heterojunctions can be organized over very long...
A logic gate based on a bistable [c2] daisy chain rotaxane decorated with lateral triarylamine units is described, giving rise to an INHIBIT function using proton concentration and light as inputs, producing dual color change supramolecular self-assembly outputs.
Gaining control over supramolecular polymerization mechanisms is of high fundamental interest to understand self-assembly and self-organization processes at the nanoscale. It also expected significantly impact design improve efficiency advanced materials devices. Up now, has been shown take place from unimers in solution, mainly by variations temperature or concentration. Reported here that nucleation-growth triarylamine monomers can be triggered electrochemistry various solvents. The...
A novel method has been developed for the silica coating of iron nanoparticles while preserving magnetic properties.
Upon cooling in solution, chiral triarylamine tris-amide unimers produce organogels by stacking into helical supramolecular polymers, which subsequently bundle larger fibers. Interestingly, circular dichroism, vibrational and AFM imaging of the self-assemblies revealed that monocolumnar P-helical fibrils formed upon fast cooling, whereas bundled M-superhelical fibers slow cooling. The mechanistic study this structural bifurcation reveals presence a strong memory effect, reminiscent complex...
The networking of individual artificial molecular motors into collective actuation systems is a promising approach for the design active materials working out thermodynamic equilibrium. Here, we report first mechanical studies on polymer gels built by integrating light-driven rotary as reticulation units in networks. We correlate volume ratio before and after light irradiation with change elastic modulus, reveal universal maximum efficiency such related to their critical overlap...
Hydrogen chloride and trifluoromethane sulfonic acid readily add to the symmetrically substituted 1,3-dibora-2,4-diphosphoniocyclobutane-1,3-diyl (1) unsymmetrically 1,3-dibora-2,4-diphosphoniobicyclo[1.1.0]butane (3) under mild conditions, substantiating some formal analogies between PBPB diradicaloids D alkenes. X-ray diffraction analyses carried out on all resulting 1,3-diborata-2,4-diphosphoniocyclobutanes (2, 4-6) revealed that reactions proceed with complete stereo- regio-selectivity,...
Metallic nanostructures are able to interact with an incident electromagnetic field at subwavelength scales by plasmon resonance which involves the collective oscillation of conduction electrons localized their surfaces. Among several possible applications this phenomenon, theoretical prediction is that optical circuits connecting multiple plasmonic elements will surpass classical electronic nanoscale because much faster light-based information processing. However, placement and coupling...
Tailored triarylamine units modified with terpyridine ligands were coordinated to Zn(2+) ions and characterized as discrete dimeric entities. Interestingly, when these complexes subsequently irradiated simple visible light in chloroform, they readily self-assembled into monodisperse spheres a mean diameter of 160 nm.
The self-assembly of chiral supramolecular polymers is an intricate process that spans a wide range length scales. Circular dichroism techniques are ideal to study this as they provide information on the molecular scale but at same time also sensitive probes long-range interactions control growth and morphology these polymers. As yet, Electronic Dichroism uses electronic transitions probe has by far been method choice while Vibrational Dichroism, which vibrational structure, much less...
The presence of a second 1,3-diborata-2,4-diphosphoniocyclobutane-1,3-diyl in the para-position phenylene linker favors diradical form over 1,3-diborata-2,4-diphosphoniobicyclo[1.1.0]butane bond stretch isomer, as long two planar units are coplanar with linker. This demonstrates that BPBP diradicals communicate through phenyl ring.
Abstract The Watson–Crick binding of DNA single strands is a powerful tool for the assembly nanostructures. Our objective to develop polymer nanoparticles equipped with surface‐patterning applications, taking advantage technology, in particular, recognition and reversibility. A hybrid copolymer synthesized through conjugation ssDNA (22‐mer) poly(ethylene oxide)‐poly(caprolactone) diblock (PEO‐ b ‐PCl). It shown that, water, PEO‐ ‐PCl‐ssDNA 22 forms micelles PCl hydrophobic core hydrophilic...
Abstract Gaining control over supramolecular polymerization mechanisms is of high fundamental interest to understand self‐assembly and self‐organization processes at the nanoscale. It also expected significantly impact design improve efficiency advanced materials devices. Up now, has been shown take place from unimers in solution, mainly by variations temperature or concentration. Reported here that nucleation‐growth triarylamine monomers can be triggered electrochemistry various solvents....