A5030716988- Supramolecular Self-Assembly in Materials
- Polydiacetylene-based materials and applications
- Luminescence and Fluorescent Materials
- Synthesis and Properties of Aromatic Compounds
- Supramolecular Chemistry and Complexes
- Surface Chemistry and Catalysis
- Covalent Organic Framework Applications
- Advanced NMR Techniques and Applications
- Liquid Crystal Research Advancements
- Photochromic and Fluorescence Chemistry
- Crystallography and molecular interactions
- Crystallization and Solubility Studies
- Microbial Metabolic Engineering and Bioproduction
- Carbon dioxide utilization in catalysis
- X-ray Diffraction in Crystallography
- Enzyme Catalysis and Immobilization
- Porphyrin and Phthalocyanine Chemistry
- DNA and Nucleic Acid Chemistry
- Biodiesel Production and Applications
Universidad Complutense de Madrid
2019-2023
Universidad de Sevilla
2019
We report on the synthesis and self-assembly of 2,15- 4,13-disubstituted carbo[6]helicenes 1 2 bearing 3,4,5-tridodecyloxybenzamide groups. The these [6]helicenes is strongly influenced by substitution pattern in helicene core that affects mutual orientation monomeric units aggregated form. Thus, 2,15-substituted derivative undergoes an isodesmic supramolecular polymerization forming globular nanoparticles maintain circularly polarized light (CPL) with glum values as high × 10-2. Unlike...
The synthesis and self-assembling features of N-annulated perylenebisimides (N-PBIs) 2-4 are reported compared with the complex self-assembly N-PBI 1. studies presented herein demonstrate that increasing length alkyl spacer separating central aromatic core dye peripheral side chains cancels differentiation on corresponding supramolecular polymerization. Thus, only 2 is able to form two different polymorphs. formation kinetically trapped monomeric species observed for all N-PBIs 2-4. These...
The synthesis of two pairs enantiomeric cyano-luminogens 1 and 2, in which the central chromophore is a p-phenylene or 2,5-dithienylbenzene moiety, respectively, described their supramolecular polymerization under kinetic thermodynamic control investigated. Compounds 2 form polymers by quadruple H-bonding arrays between amide groups π-stacking aromatic moieties. In addition, peripheral benzamide units are able to intramolecularly H-bonded pseudocycles that behave as metastable monomer M*...
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...
Self-assembling features, chiroptical activity, and spin filtering properties are reported for 2,15- 4,13-disubstituted [6]helicenes decorated in their periphery with 3,4,5-tris(dodecyloxy)-N-(4-ethynylphenyl)benzamide moieties. The weak non-covalent interaction between these units conditions the corresponding circularly polarized luminescence polarization. self-assembly is overall [6]helicene derivatives that, despite formation of H-bonding interactions amide groups present peripheral...
Anti-cooperative supramolecular polymerization by attenuated growth exhibited self-assembling units of two electron-donor benzo[1,2-b:4,5-b']dithiophene (BDT) derivatives (compounds 1a and 1b) the electron-acceptor 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) (compound 2) is reported. Despite apparent cooperative mechanism 1 2, AFM imaging SAXS measurements reveal formation small aggregates that suggest operation an anti-cooperative strongly conditioned growth. In this mechanism,...
A sludge fraction is obtained from the industries which recycle cooking oil and this contains a large amount of with an extremely high acidity ( > 60%). In work, we propose scheme for methyl ester production residual consisting esterification free fatty acids followed by transesterification remaining triglycerides. Esterifications were carried out different methanol:oil molar ratios, various catalysts in weight ratios. The results revealed that homogeneous produced higher yields than...
The kinetically controlled amplification of asymmetry experienced in the co-assembly chiral tribiphenylaminetricarboxamides <bold>(S)-1</bold> and <bold>(R)-1</bold> is investigated.
The synthesis and self-assembling features of the N-annulated perylene diimide (NPBI) 1 in different solvents are reported. Compound possesses two chiral linkers, derived from (S)-(+)-alaninol, that connect central aromatic NPBI segment peripheral trialkoxybenzamide units. Ala-based linker has been demonstrated to strongly favor formation intramolecularly H-bonded seven-membered pseudocycles. shows a strong tendency self-assemble even good solvent like CHCl3 dimers is detected this solvent....
The geometry-dependent self-assembling features of two PAHs, 1 and 2, are reported. more planar forms H-type supramolecular polymers, in a highly cooperative fashion, by combination H-bonding π-stacking, with rod-like morphology. However, the distorted 2 interacts only means no contact between aromatic units, yielding lamellar structures.
Abstract The synthesis and self‐assembling features of N‐annulated perylenebisimides (N‐PBIs) 2 – 4 are reported compared with the complex self‐assembly N‐PBI 1 . studies presented herein demonstrate that increasing length alkyl spacer separating central aromatic core dye peripheral side chains cancels differentiation on corresponding supramolecular polymerization. Thus, only is able to form two different polymorphs. formation kinetically trapped monomeric species observed for all N‐PBIs...
We describe the synthesis of two propeller-shaped, emissive trisbiphenylamines 1 and (S)-2. Whilst achiral forms supramolecular polymers following a cooperative mechanism, self-assembly chiral (S)-2 can be described by an isodesmic mechanism. Despite character polymerization (S)-2, efficient transfer chirality from embedded point peripheral side chains to aggregates is demonstrated. The co-assembly in sergeants-and-soldiers experiment shows very different dichroic response that registered...
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...