A5037300503- Supramolecular Self-Assembly in Materials
- Synthesis and Properties of Aromatic Compounds
- Luminescence and Fluorescent Materials
- Polydiacetylene-based materials and applications
- Supramolecular Chemistry and Complexes
- Radical Photochemical Reactions
- Oxidative Organic Chemistry Reactions
- Catalysis and Oxidation Reactions
- Photochromic and Fluorescence Chemistry
- Surface Chemistry and Catalysis
- Innovative Microfluidic and Catalytic Techniques Innovation
- Perovskite Materials and Applications
- Crystallography and molecular interactions
- Covalent Organic Framework Applications
- Bone Tissue Engineering Materials
- Crystallization and Solubility Studies
- Electrocatalysts for Energy Conversion
- Click Chemistry and Applications
- Molecular Junctions and Nanostructures
- X-ray Diffraction in Crystallography
- Chemical Synthesis and Analysis
- Catalytic Processes in Materials Science
Université de Strasbourg
2022-2024
Centre National de la Recherche Scientifique
2022-2024
Madrid Institute for Advanced Studies
2024
Universidad Complutense de Madrid
2015-2021
Abstract Herein, the synthesis and self‐assembling features of N ‐heterotriangulenes 1 – 3 decorated in their periphery with 3,4,5‐trialkoxy‐ ‐(alkoxy)benzamide moieties that enable kinetic control supramolecular polymerization process are described. The selection an appropriate solvent results a tunable energy landscape which relative different monomeric or aggregated species can be regulated. Thus, methylcyclohexane/toluene (MCH/Tol) mixture, intramolecular hydrogen‐bonding interactions...
The helical stereomutation in the kinetically controlled coassembly of reported carbonyl-bridged triarylamines (CBTs) is described. copolymerization chiral CBTs (S)-1 or (R)-1 with achiral 2 sergeants-and-soldiers (SaS) experiments results a tunable helicity conditioned by percentage sergeant and cooling rate. dissimilar inherent chirality extended monomeric (M) intramolecularly H-bonded metastable (M*) species, as well different stability kinetic trap (S)-1/(R)-1 CBT 2, condition transfer...
The chiroptical features of supramolecular polymers formed from N-heterotriangulenes 1-3 have been investigated by circular dichroism (ECD) and vibrational (VCD) techniques. In solution, the CD spectra demonstrate that helicity aggregates depends on only stereogenic centres located at peripheral chains. gel state, are conditioned point chirality achiral solvent utilised. Sonication gels in CCl4 reveals both kinetic thermodynamic phases. These findings reveal presence pathway complexity state...
T-Shaped 2<italic>H</italic>-benzo[<italic>d</italic>][1,2,3]triazole derivatives have been synthesized by Sonogashira coupling reactions under microwave irradiation.
Hierarchical organization of self-assembled structures into superstructures is omnipresent in Nature but has been rarely achieved synthetic molecular assembly due to the absence clear structural rules. We herein report on self-assembly scissor-shaped azobenzene dyads which form discrete nanotoroids that further organize 2D porous networks. The steric demand peripheral aliphatic units diminishes trend dyad constitute stackable solution, thus affording isolated (unstackable) upon cooling. Upon...
Abstract Chemically fueled chemical reaction networks (CRNs) are essential in controlling dissipative self‐assembly. A key challenge the field is to store fuel‐precursors or “pre‐fuels” system that converted into activating deactivating fuels a catalytically controlled CRN. In addition, real‐time control over catalysis CRN by light highly desirable, but so far not yet achieved. Here we show driven photoinitiated with 450 nm light, producing activated monomers go on perform transient Monomer...
Photoreduction of perylenediimide (PDI) derivatives has been widely studied for use in photocatalysis, hydrogen evolution, photo-responsive gels, and organic semiconductors. Upon light irradiation, the radical anion (PDI⋅- ) can readily be obtained, whereas further reduction to dianion (PDI2- is rare. Here we show that full 2-electron photoreduction achieved using UVC light: 1) anaerobic conditions by 'direct photoreduction' PDI aggregates, or 2) 'indirect aerobic due acetone ketyl radicals....
The supramolecular polymerization of pyrene imidazoles 1 and 2, governed by H-bonding C-H···π interactions, yields aggregates showing the characteristic bluish emission pattern pyrene-based monomers.
The supramolecular polymerization of [5]helicenes 1 and 2 is investigated. self-assembly these helicenes proceeds by the operation H-bonding interactions with a negligible participation π-stacking. enantiopurity sample has dramatic effect on mechanism since it reverts isodesmic for racemic mixture to cooperative one enantioenriched sample. Noticeably, formation polymers efficiently increases configurational stability 1,14-unsubstituted [5]helicenes.
Abstract The helical stereomutation in the kinetically controlled coassembly of reported carbonyl‐bridged triarylamines (CBTs) is described. copolymerization chiral CBTs (S)‐1 or (R)‐1 with achiral 2 sergeants‐and‐soldiers (SaS) experiments results a tunable helicity conditioned by percentage sergeant and cooling rate. dissimilar inherent chirality extended monomeric (M) intramolecularly H‐bonded metastable (M*) species, as well different stability kinetic trap / CBT , condition transfer...
Chemically-fueled chemical reaction networks (CRNs) are key in controlling dissipative self-assembly. Having catalysts gating fuel consumption for both the activation and deactivation chemistry of (assembly-prone) monomers catalytic activity with an external stimulus would provide better control over where, when, how long self-assembled structures can form. Here we achieve light monomer subsequent assembly into supramolecular fibers, partial fiber disassembly. Activation proceeds via...
Abstract Chemically fueled chemical reaction networks (CRNs) are essential in controlling dissipative self‐assembly. A key challenge the field is to store fuel‐precursors or “pre‐fuels” system that converted into activating deactivating fuels a catalytically controlled CRN. In addition, real‐time control over catalysis CRN by light highly desirable, but so far not yet achieved. Here we show driven photoinitiated with 450 nm light, producing activated monomers go on perform transient Monomer...
Abstract We report on the cooperative supramolecular polymerization of a series N ‐heterotriangulenes that aggregate into helical columnar stacks by operation H‐bonding interactions between peripheral amide groups and π‐stacking central aromatic moieties. The outcome highly stable polymers stems from joint effect point chirality dictated stereogenic centers at side chains that, in turn, conditions molecular atropisomerism generated restricted rotation benzamide moieties affording...
Abstract Hierarchical organization of self‐assembled structures into superstructures is omnipresent in Nature but has been rarely achieved synthetic molecular assembly due to the absence clear structural rules. We herein report on self‐assembly scissor‐shaped azobenzene dyads which form discrete nanotoroids that further organize 2D porous networks. The steric demand peripheral aliphatic units diminishes trend dyad constitute stackable solution, thus affording isolated (unstackable) upon...
Chemically-fueled chemical reaction networks (CRNs) are key in controlling dissipative self-assembly. Having catalysts gating fuel consumption for both the activation and deactivation chemistry of (assembly-prone) monomers catalytic activity with an external stimulus would provide better control over where, when, how long self-assembled structures can form. Here we achieve light two different that govern monomer assembly into supramolecular fibers, as well fiber disassembly. Activation...
In article 1702437, Luis Sánchez and co-workers describe the synthesis self-assembly of N-heterotriangulenes 1–3 with a tunable energy landscape. Seeded living supramolecular polymerizations are realized through autocatalytic transformation metastable monomeric units, as well two competing off- on-pathway aggregates. The relevance controlling pathway complexity in self-assembling new avenues for investigation complex functional structures shown. authors acknowledge Dr. J. Calbo his generous...
Photoreduction of perylenediimide (PDI) derivatives has been widely studied for use in photocatalysis, hydrogen evolution, photo-responsive gels, and organic semiconductors. Upon light irradiation, the radical anion (PDI•–) can readily be obtained, whereas further reduction to dianion (PDI2–) is rare. Here we show that full 2-electron photoreduction achieved using UVC light: 1) anaerobic conditions by ‘direct photoreduction’ PDI aggregates, or 2) ‘indirect aerobic due acetone ketyl radicals....
Photoreduction of perylenediimide (PDI) derivatives has been widely studied for use in photocatalysis, hydrogen evolution, photo-responsive gels, and organic semiconductors. Upon light irradiation, the radical anion (PDI•–) can readily be obtained, whereas further reduction to dianion (PDI2–) is rare. Here we show that full 2-electron photoreduction achieved using UVC light: 1) anaerobic conditions by ‘direct photoreduction’ PDI aggregates, or 2) ‘indirect aerobic due acetone ketyl radicals....