Química Inorgànica i Orgànica: Enviaments recents
Ara mostrant els elements 41-60 de 1011
Robust antiferromagnetic coupling in hard-soft bi-magnetic core/shell nanoparticles
The growing miniaturization demand of magnetic devices is fuelling the recent interest in bi-magnetic nanoparticles as ultimate small components. One of the main goals has been to reproduce practical magnetic properties ...
Luminiscent and Magnetic Tb-MOF Flakes Deposited on Silica
The synthesis of a terbium-based 2D metal-organic framework (MOF), of formula [Tb(MeCOO)(PhCOO)2] (1), a crystalline material formed by neutral nanosheets held together by Van der Waals interactions, is presented. The ...
Aggregation versus Biological Activity in Gold(I) Complexes. An Unexplored Concept
The aggregation process of a series of mono- and dinuclear gold(I) complexes containing a 4-ethynylaniline ligand and a phosphane at the second coordination position (PR3-Au-C≡CC6H4-NH2, complexes 1-5, and (diphos)(Au-C≡ ...
Single-molecule kinetics and footprinting of DNA bis-intercalation: the paradigmatic case of Thiocoraline
DNA bis-intercalators are widely used in molecular biology with applications ranging from DNA imaging to anticancer pharmacology. Two fundamental aspects of these ligands are the lifetime of the bisintercalated complexes ...
Highly efficient elastomeric fluorescence sensors for force detection
Carbazole-containing nematic liquid single crystal elastomers (LSCEs) alter their luminescence upon the application of an external mechanical force. Therefore, they are valuable flexible materials for detecting mechanical ...
A direct, efficient method for the preparation of siRNAs containing ribo like North [3.1.0]hexane pseudosugars
An efficient method for the preparation of siRNAs modified with ribo-like North bicyclo[3.1.0]hexane pseudosugars is described. The combined use of 2'-O-(2-cyanoethoxymethyl) (CEM) and 2'-O-TBDMS protection was successfully ...
Multi-Length Scale Communication Effects in Catalysis: Thinking Big and Acting Small
The use of hierarchically structured materials as catalysts has been finding increasing application in the past years. For these catalytic systems, not only the nano-scale matters: a high degree of order across multiple ...
Improving the emission quantum yield in dinuclear Eu(III) and Tb(III) complexes with 2-fluorobenzoate.
The reaction of Ln(NO3)2·6H2O salts (Ln = Eu and Tb) with an excess of 2-fluorobenzoic acid (H-2FBz) in an ethanol/water mixture allows the isolation of dinuclear compounds with the formula [Ln2(μ2-2FBz)4(2FBz)2(H-2FBz)2(H2O)2] ...
New Visible-Light-Sensitive Dicyanocoumarin- andCOUPY-Based Caging Groups with ImprovedPhotolytic Efficiency
Photolabile protecting groups (PPGs), also known as caging groups, are valuable tools in photopharmacology. They enable precise control over the release of bioactive compounds from the corresponding caged compounds at a ...
Magnetic long-range order induced by quantum ralaxation in single-molecule magnets
Can magnetic interactions between single-molecule magnets (SMMs) in a crystal establish long-range magnetic order at low temperatures deep in the quantum regime, where the only electron spin fluctuations are due to incoherent ...
A heterometallic [LnLn ' Ln] lanthanide complex as a qubit with embedded quantum error correction
We show that a [Er-Ce-Er] molecular trinuclear coordination compound is a promising platform to implement the three-qubit quantum error correction code protecting against pure dephasing, the most important error in magnetic ...
Unveiling the Membrane and Cell Wall Action of Antimicrobial Cyclic Lipopeptides: Modulation of the Spectrum of Activity
Antibiotic resistance is a major public health challenge, and Gram-negative multidrug-resistant bacteria are particularly dangerous. The threat of running out of active molecules is accelerated by the extensive use of ...
Stereospecific SN2@P reactions: Novel access to bulky P-stereogenic ligands
The stereospecific hydrolysis of bulky aminophosphine boranes is reported for the first time. The resulting phosphinous acid boranes, upon activation, undergo stereospecific nucleophilic substitution reaction at the ...
Self-organizing propagation patterns from dynamic self-assembly in monolayers
Propagation of localized orientational waves, as imaged by Brewster angle microscopy, is induced by low intensity linearly polarized light inside axisymmetric smectic-C confined domains in a photosensitive molecular thin ...
Bromotryptophans and their incorporation in cyclic and bicyclic privileged peptides
While revisiting biologically active natural peptides, the importance of the tryptophan residue became clear. In this article, the incorporation of this amino acid, brominated at different positions of the indole ring, ...
Highly Enantioselective Iridium-Catalyzed Hydrogenation of Cyclic Enamides
The MaxPHOX-Ir catalyst system provided the highest selectivity ever reported for the redn. of cyclic enamides derived from α- and β-tetralones. This result indicates that iridium catalysts are also proficient in reducing ...
Modified siRNAs for the study of the PAZ domain
Chemical modifications aimed at stabilizing the interaction between the 3'-end of siRNAs and the PAZ domain of RISC have been tested for their effect on RNAi activity. Such modifications contribute positively to the stability ...
Photoactivation of the cytotoxic properties of platinum(II) complexes through ligand photoswitching
The development of photoactivatable metal complexes with potential anticancer properties is a topical area of current investigation. Photoactivated chemotherapy using coordination compounds is typically based on photochemical ...
d-Polyarginine Lipopeptides as Intestinal Permeation Enhancers.
An estimated 285 million people were living with diabetes in 2010, and this number is expected to reach 440 million by 2030. Current treatment of this disease involves the intradermal injection of insulin analogues. Many ...
Reconfigurable swarms of nematic colloids controlled by photoactivated surface patterns
Different phoretic driving mechanisms have been proposed for the transport of solid or liquid microscopic inclusions in integrated chemical processes. It is now shown that a substrate that was chemically modified with ...
