Listar QUIO_Articles por autoría "dc280e4c-f384-47d7-9559-09af8efa3048"
Mostrando ítems 1-11 de 11
-
Influence of the Solvent on the Self-Assembly of a Modified Amyloid Beta Peptide Fragment. II. NMR and Computer Simulation Investigation
Hamley, Ian W.; Nutt, D. R.; Brown, G. D.; Miravet, Juan; Escuder, Beatriu; Rodríguez Llansola, Francisco American Chemical Society (2010)The conformation of a model peptide AAKLVFF based on a fragment of the amyloid β peptide Aβ16−20, KLVFF, is investigated in methanol and water via solution NMR experiments and molecular dynamics computer simulations. In ... -
Low-Molecular-Weight Gelators: Elucidating the Principles of Gelation Based on Gelator Solubility and a Cooperative Self-Assembly Model
Hirst, Andrew R.; Coates, Ian A.; Boucheteau, Thomas R.; Miravet, Juan; Escuder, Beatriu; Castelletto, Valeria; Hamley, Ian W.; Smith, David K. American Chemical Society (2008)This paper highlights the key role played by solubility in influencing gelation and demonstrates that many facets of the gelation process depend on this vital parameter. In particular, we relate thermal stability (Tgel) ... -
pH-Tunable Hydrogelators for Water Purification: Structural Optimisation and Evaluation
Greenland, Barnaby W.; Wood, Daniel M.; Acton, Aaron L.; Rodríguez Llansola, Francisco; Murray, Claire A.; Cardin, Christine J.; Miravet, Juan; Escuder, Beatriu; Hamley, Ian W.; Hayes, Wayne Wiley (2012-02)A focused library of potential hydrogelators each containing two substituted aromatic residues separated by a urea or thiourea linkage have been synthesised and characterized. Six of these novel compounds are highly efficient ... -
Selective and highly efficient dye scavenging by a pH-responsive molecular hydrogelator
Rodríguez Llansola, Francisco; Escuder, Beatriu; Miravet, Juan; Hermida Merino, Daniel; Hamley, Ian W.; Cardin, Christine J.; Hayes, Wayne Royal Society of Chemistry (2010)A structurally simple low molecular weight hydrogelator derived from isophthalic acid forms robust pH-responsive hydrogels capable of highly efficient and selective dye adsorption. -
Self-assembly of a peptide amphiphile: transition from nanotape fibrils to micelles
Miravet, Juan; Escuder, Beatriu; Segarra Maset, María Dolores; Tena Solsona, Marta; Hamley, Ian W.; Dehsorkhi, Ashkan; Castelletto, Valeria Royal Society of Chemistry (2013-02)A thermal transition is observed in the peptide amphiphile C16-KTTKS (TFA salt) from nanotapes at 20 °C to micelles at higher temperature (the transition temperature depending on concentration). The formation of extended ... -
Self-Assembly of Two-Component Gels: Stoichiometric Control and Component Selection
Hirst, Andrew R.; Miravet, Juan; Escuder, Beatriu; Noirez, Laurence; Castelletto, Valeria; Hamley, Ian W.; Smith, David K. 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 ... -
Self-Assembly Studies of a Chiral Bisurea-Based Superhydrogelator
Rodríguez Llansola, Francisco; Hermida Merino, Daniel; Nieto Ortega, Belén; Ramírez, Francisco J.; López Navarrete, Juan T.; Casado, Juan; Hamley, Ian W.; Escuder, Beatriu; Hayes, Wayne; Miravet, Juan Wiley (2012-11)A chiral bisurea-based superhydrogelator that is capable of forming supramolecular hydrogels at concentrations as low as 0.2 mM is reported. This soft material has been characterized by thermal studies, rheology, X-ray ... -
Structural and morphological studies of the dipeptide based L-Pro-L-Val organocatalytic gels and their rheological behaviour
Escuder, Beatriu; Rodríguez-Llansola, Francisco; Hamley, Ian W.; Miravet, Juan; Hayes, Wayne Royal Society of Chemistry (2012-07)Organocatalytic gels based on the dipeptide sequence L-Pro-L-Val have been studied by two different FTIR techniques. This suggests a different arrangement of the gelator molecules in the self-assembled fibers depending on ... -
Thermally Regulated Reversible Formation of Vesicle-Like Assemblies by Hexaproline Amphiphiles
Felip-León, Carles; Galindo, Francisco; Miravet, Juan; Castelletto, Valeria; Hamley, Ian W. American Chemical Society (2017-07)Peptides composed of hexaproline and glutamic acid (P6E) or lysine (P6K) as C-terminal units show thermally promoted aggregation, affording vesicle-like assemblies upon heating to 80 °C. The aggregation is analyzed by ... -
Thermodynamic and Kinetic Study of the Fibrillization of a Family of Tetrapeptides and Its Application to Self-Sorting. What Takes So Long?
Tena Solsona, Marta; Escuder, Beatriu; Miravet, Juan; Castelletto, Valeria; Hamley, Ian W.; Dehsorkhi, Ashkan American Chemical Society (2015-04-13)Insight is provided into the thermodynamics and kinetics of peptide fibrillization, a process of particular interest in biomedicine due to its direct relationship to amyloid diseases. The studied isomeric tetrapeptides are ... -
Tuning Chelation by the Surfactant-Like Peptide A(6)H Using Predetermined pH
Castelletto, Valeria; Hamley, Ian W.; Segarra Maset, María Dolores; Berdugo Gumbau, Cristina; Miravet, Juan; Escuder, Beatriu; Seitsonen, J.; Ruokolainen, J. American Chemical Society (2014)We examine the self-assembly of a peptide A6H comprising a hexa-alanine sequence A6 with a histidine (H) “head group”, which chelates Zn2+ cations. We study the self-assembly of A6H and binding of Zn2+ ions in ZnCl2 ...