ListarQUIO_Articles por tema "self-assembly"
Mostrando ítems 1-20 de 20
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Adsorption of Rose Bengal on a self-assembled fibrillar network affords a thermally switchable oxygenation photocatalyst and a thermochromic soft material
Elsevier (2019-10-03)Rose Bengal (RB) can be homogeneously dispersed in dichloromethane by its adsorption on the fibrillar network of a molecular gel formed in this solvent. The RB loaded gel was visualized by confocal scanning laser microscopy, ... -
Competition versus Cooperation in Catalytic Hydrogelators for anti-Selective Mannich Reaction
Wiley (2017-07-21)Chemical systems find similarities in different sociological and biological processes, in which the entities compete or cooperate for a favorable outcome. The structural and functional adaptations leading to emergent ... -
Deamidation of pseudopeptidic molecular hydrogelators and its application to controlled release
Elsevier (2017-07)Hypothesis The incorporation of a succinic acid-derived moiety in amino acid derivatives would favor an intramolecular catalysis of a deamidation reaction. Such reaction would permit controlled disassembly of molecular ... -
Doubly chiral pseudopeptidic macrobicyclic molecular cages: Water-assisted dynamic covalent self-assembly and chiral self-sorting
Elsevier (2022-06-27)Taking advantage of the dynamic covalent chemistry approach, four different cages were synthesized by condensation of tripodal pseudopeptides with 4,4′-biphenyldicarboxyaldehyde. Whereas undesired products of polymeric ... -
Effect of Hyaluronic Acid on the Self-Assembly of a Dipeptide-Based Supramolecular Gel
Wiley (2023-10-02)The combination of polymers and low molecular weight (LMW) compounds is a powerful approach to prepare new supramolecular materials. Here we prepare two-component hydrogels made by a well-known and biologically active ... -
Freezing Capture of Polymorphic Aggregates of Bolaamphiphilic L-Valine-Based Molecular Hydrogelators
WILEY-VCH Verlag GmbH & Co. KGaA (2014-05)Nanostructured xerogels have been prepared by the freeze-drying of hydrogels and aggregates formed by bolaamphiphilic l-valine derivatives after aging under different environmental conditions. A wide variety of shapes and ... -
Glutathione-responsive molecular nanoparticles from a dianionic bolaamphiphile and their use as carriers for targeted delivery
Elsevier (2021-11-06)The formation in aqueous media of molecular nanoparticles from a bolaamphiphile (SucIleCsa) incorporating a disulfide moiety is described. The particles can be loaded efficiently with the lipophilic mitochondrial marker ... -
High-Tech Applications of Self-Assembling Supramolecular Nanostructured Gel-Phase Materials: From Regenerative Medicine to Electronic Devices
John Wiley & Sons (2008)It is likely that nanofabrication will underpin many technologies in the 21st century. Synthetic chemistry is a powerful approach to generate molecular structures that are capable of assembling into functional nanoscale ... -
Imidazolium based gemini amphiphiles derived from L-valine. Structural elements and surfactant properties
Elsevier (2021-09-02)Imidazolium amphiphiles often display excellent surfactants properties, while amide functionalities and chirality can implement self-assembly. The introduction of these functionalities in imidazolium gemini amphiphiles is ... -
Improvement of molecular gel formation efficiency by adjusting preorganization of amino acid-derived flexible molecules. A NMR and thermodynamic study
Wiley (2016)The efficiency of the formation of molecular gels of simple de-rivatives of l-valineand l-isoleucine is greatl yimproved in dif-ferent organic solvents when ahexyl fragment is replaced byabulkier cyclohexyl one. Astudy ... -
Morphology Diversity of L‐Phenylalanine‐Based Short Peptide Supramolecular Aggregates and Hydrogels
Wiley (2018-08)Supramolecular aggregates and hydrogels of diverse morphologies can be obtained by replacing the widely studied aromatic N‐capping of phenylalanine derivatives by long alkyl chains. Simple changes in chain length and number ... -
Open chain pseudopeptides as hydrogelators with reversible and dynamic responsiveness to pH, temperature and sonication as vehicles for controlled drug delivery
Elsevier (2022-01-25)A new family of open chain-pseudopeptidic compounds displaying a pendant carboxylic group have been prepared with excellent yields. Their self-assembly has been studied under different conditions and in different media. ... -
Photomodulation of DNA‐Templated Supramolecular Assemblies
Wiley (2018-01-12)A new type of DNA ligand that contains a phosphate‐binding group and a photoresponsive azobenzene moiety is reported. When the azobenzene is in trans configuration, the ligand binds to the minor groove of a double‐stranded ... -
Self-Assembly Controls Reactivity with Nitric Oxide: Implications for Fluorescence Sensing
American Chemical Society (2018)Three molecules containing the fluorophore 4-amino-1,8-naphthalimide (ANI) and showing different tendencies to self-assembly in aqueous environment have been prepared and fully characterized. The fluorescence emissions of ... -
Self-Assembly of Two-Component Gels: Stoichiometric Control and Component Selection
Wiley (2009)Two-component systems capable of self-assembling into soft gel-phase materials are of considerable interest due to their tunability and versatility. This paper investigates two-component gels based on a combination of a ... -
Supramolecular Catalysis with Extended Aggregates and Gels: Inversion of Stereoselectivity Caused by Self-Assembly
Wiley-VCH (2010)L-Proline-L-valine dipeptide derivatives, which self-assemble in toluene, have been studied as stereoselective catalysts in the conjugate addition of cyclohexanone to trans-β-nitrostyrene. Remarkable effects on the ... -
Synthesis of a Double-Network Supramolecular Hydrogel by Having One Network Catalyse the Formation of the Second
Wiley (2017-02-10)elf-assembly of biomolecules catalytically controls the formation of natural supramolecular structures, giving highly ordered complex materials. Such desirable hybrid systems are very difficult to design and construct ... -
Synthesis of second-generation self-assembling Gemini Amphiphilic Pseudopeptides
Elsevier (2019-12-28)Hypothesis The structural modularity of Gemini Amphiphilic Pseudopeptides (GAPs) allows the tuning of the self-assembling properties by slight modifications in the chemical structures. We hypothesized that the introduction ... -
Tetrapeptidic Molecular Hydrogels: Self-assembly and Co-aggregation with Amyloid Fragment Aβ1-40
WILEY-VCH Verlag GmbH & Co. KGaA (2014-01)A new family of isomeric tetrapeptides containing aromatic and polar amino acid residues that are able to form molecular hydrogels following a smooth change in pH is described. The hydrogels have been studied by spectroscopic ... -
Towards Supramolecular Catalysis with Small Self-assembled Peptides
Wiley-VCH Verlag (2015-04)Self-assembly of small peptides offers unique opportunities for the bottom-up construction of supramolecular catalysts that aim to emulate the efficiency and selectivity of natural enzymes. Small, information-rich, simple ...