Browsing QUIO_Articles by Title
-
Macrocycle Synthesis by Chloride-Templated Amide Bond Formation
American Chemical Society (2016)A new family of pseudopeptidic macrocyclic compounds has been prepared involving an anion-templated amide bond formation reaction at the macrocyclization step. Chloride anion was found to be the most efficient template ... -
Macrocycle synthesis by chloride-templated amide bond formation
American Chemical Society (2016)A new family of pseudopeptidic macrocyclic compounds has been prepared involving an anion-templated amide bond formation reaction at the macrocyclization step. Chloride anion was found to be the most efficient template ... -
Macrocyclization Reactions: The Importance of Conformational, Configurational, and Template-Induced Preorganization
ACS Publications (2015-08-06)The success of a given macrocyclization reaction involves a very delicate balance of many different factors. First, a proper understanding of the basic thermodynamic and kinetic concepts underlying these processes is ... -
Macroporous polymers tailored as supports for large biomolecules: Ionic liquids as porogenic solvents and as surface modifiers
Elsevier (2014-12)Highly ordered rod-like polymeric monoliths with large-pores have been successfully synthesized using ionic liquids (ILs) IL-1 (1-Butyl-3-methylimidazolium bis (trifluoromethylsulfonyl)imide [BMIM][NTf2]) and IL-2 ... -
Magnetism and Heterogeneous Catalysis: In Depth on the Quantum Spin-Exchange Interactions in Pt3M (M = V, Cr, Mn, Fe, Co, Ni, and Y)(111) Alloys
American Chemical Society (2020-11-11)Bimetallic Pt-based alloys have drawn considerable attention in the last decades as catalysts in proton-exchange membrane fuel cells (PEMFCs) because they closely fulfill the two major requirements of high performance and ... -
Main-Chain Organometallic Microporous Polymers Bearing Triphenylene–Tris(N-Heterocyclic Carbene)–Gold Species: Catalytic Properties
WILEY-VCH Verlag GmbH & Co. KGaA (2014-05)Two triphenylene-based tris(N-heterocyclic carbene)–gold–acetylide main-chain organometallic microporous polymers (MOMPs) were obtained and fully characterized. Both materials show spherical shapes, and their size is highly ... -
Malayaite ceramic pigments: A combined optical spectroscopy and neutron/X-ray diffraction study
Elsevier (2009)Ceramic pigments based on the Cr-doped malayaite structure were synthesized by solid state reaction and characterized by optical spectroscopy and combined X-ray and neutron powder diffraction in order to elucidate the still ... -
“MasterChemist”: A Novel Strategy for Reviewing Stoichiometry and Introducing Molecular Gastronomy to Chemistry Students
American Chemical Society and Division of Chemical Education, Inc. (2022-09-06)This article presents and discusses the results of an educational innovation that seeks to introduce the world of molecular gastronomy in chemistry lessons as a means to review stoichiometry and offer an alternative way ... -
Mechanistic implications of the enantioselective addition of alkylzinc reagents to aldehydes catalyzed by nickel complexes with a-amino amide ligands
The Royal Society of Chemistry (2016-11)The enantioselective alkylation of aldehydes catalysed by nickel(II)-complexes derived from α-amino amides was studied by means of density functional theory (DFT) and ONIOM (B3LYP:UFF) calculations. A mechanism was proposed ... -
Mechanistic Insight into the Lability of the Benzyloxycarbonyl (Z) Group inN-Protected Peptides under Mild Basic Conditions
Wiley Online Library (2014)The unexpected lability of Z protecting group under mild basic conditions at room temperature is explained by a mechanism based on anchimeric assistance. It is found that the vicinal amide group stabilizes the tetrahedral ... -
Mesoporous SiO2 thin films containing photoluminescent ZnO nanoparticles and simultaneous SAXS/WAXS/ellipsometry experiments
RSC (2011)We report the formation of ZnO/SiO2 nanocomposite thin films. They are composed of 5 nm sized-wurtzite ZnO nanoparticles nucleated within vitreous SiO2 which was in the form of either an ordered mesoporous or a dense matrix. ... -
Metal Node Control of Brønsted Acidity in Heterobimetallic Titanium–Organic Frameworks
American Chemical Society (2023-01-23)Compared to indirect framework modification, synthetic control of cluster composition can be used to gain direct access to catalytic activities exclusive of specific metal combinations. We demonstrate this concept by testing ... -
Methylammonium Lead Bromide Perovskite Battery Anodes Reversibly Host High Li-Ion Concentrations
American Chemical Society (2017-04)Ions migrate through the hybrid halide perovskite lattice, allowing for a variety of electrochemical applications as perovskite-based electrodes for batteries. It is still unknown how extrinsic defects such as lithium ions ... -
La microestructura de metalizados en cerámica plana vidriada
Faenza Editrice Ibérica (2009)En este artículo se estudia la microestructura y las propiedades ópticas y mecánicas de baldosas con efecto metalizado desarrollado tanto por deposición PVD de titanio en pasta roja y pasta blanca, y en baldosa de gres ... -
Microwave-Assisted Selective Oxidation of 1-Phenyl Ethanol in Water Catalyzed by Metal Nanoparticles Immobilized onto Supported Ionic Liquidlike Phases
ACS Publications (2015)The catalytic activity of metal nanometallic particles (MeNPs) immobilized and stabilized onto supported ionic liquidlike phases is evaluated to develop Au- and Pd-based oxidation catalytic systems. Under similar conditions, ... -
Minimalistic amino amides as models to study N–Hπ interactions and their implication in the side chain folding of pseudopeptidic molecules
Royal Society of Chemistry (2013)The structural study of simple amino amides derived from natural amino acids showed a unique conformational pattern for the aromatic residues, being clearly different from that for the aliphatic derivatives. The results ... -
Molecular Hydrogels from Bolaform Amino Acid Derivatives: A Structure–Properties Study Based on the Thermodynamics of Gel Solubilization
Wiley (2012-03)Insight is provided into the aggregation thermodynamics associated to hydrogel formation by molecular gelators derived from L-valine and L-isoleucine. Solubility data from NMR measurements are used to extract thermodynamic ... -
Molecular recognition of N-protected dipeptides by pseudopeptidic macrocycles: a comparative study of the supramolecular complexes by ESI-MS and NMR
Royal Society of Chemistry (2010)The molecular recognition properties of pseudopeptidic macrocycles have been studied by ESI-MS and NMR spectroscopy, as highly complementary experimental techniques in solution and in the gas phase. We used ESI-MS competition ... -
Molecular recognition through divalent interactions with a self-assembled fibrillar network of a supramolecular organogel
Royal Society of Chemistry (2008)The interaction of phenol derivatives with the self-assembled fibrillar network of two different supramolecular gels has been studied. NMR relaxometry reveals the selective interaction of resorcinol over other related ... -
Monitoring psychoactive substance use at six European festivals through wastewater and pooled urine analysis
Elsevier (2020-07-10)The consumption of psychoactive substances is considered a growing problem in many communities. Moreover, new psychoactive substances (NPS) designed as (legal) substitutes to traditional illicit drugs are relatively easily ...