Química Inorgànica i Orgànica: Enviaments recents
Ara mostrant els elements 621-640 de 1012
An innovative and environmentally friendly bioorganic synthesis of activated carbon based on olive stones and its potential application for CO2 capture
This work presents an innovative, fully environmentally friendly method of obtaining bioorganic activated carbon based on olive stones by applying banana plant extract as an activating agent. The activated carbon prepared ...
Embedding catalytic nanoparticles inside mesoporous structures with controlled porosity: Au@TiO2
The ability to produce catalytic nanoparticles with controlled properties is key to developing and producing heterogeneous catalysts with optimized activity and selectivity. No less important is to maximize the nanoparticle ...
Case history of porphyrin J-aggregates: a personal point of view
The formation and structure of the title aggregates are paradigms of the self-assembly of amphiphilic molecular building blocks in supramolecular chemistry. This review summarizes the research in the University of Barcelona ...
Helix fraying and lipid-dependent structure of a short amphipathic membrane-bound peptide revealed by solid-state NMR
The amphipathic a-helical peptide KIA14 [(KIAGKIA)(2)-NH2] was studied in membranes using circular dichroism and solid-state NMR spectroscopy to obtain global as well as local structural information. By analyzing H-2 NMR ...
Supported Nanostructured MoxC Materials for the Catalytic Reduction of CO<sub>2</sub> through the ReverseWater Gas Shift Reaction
MoxC-based catalysts supported on γ-Al2O3, SiO2 and TiO2 were prepared, characterized and studied in the reverse water gas shift (RWGS) at 548–673 K and atmospheric pressure, using CO2:H2 = 1:1 and CO2:H2 = 1:3 mol/mol ...
Molecular self-recognition: a chiral [Mn(II)6] wheel via donor acceptor p i-pi contacts and H-bonds
A multinucleating ligand capable of establishing different types of intermolecular interactions, when combined with acetate groups leads to the assembly of a chiral [Mn(II)3] cluster poised for a process of self-recognition ...
Thw 13C solid DNP mechanisms with perchlorotriphenylmethyl radicals- the role of 35,37Cl
The microwave frequency swept DNP enhancement, referred to as the DNP spectrum, is strongly dependent on the EPR spectrum of the polarizing radical and it reveals the underlying DNP mechanisms. Here we focus on two chlorinated ...
Single molecule fluorescence reveals dimerization of myristoylated Src N-terminal region on supported lipid bilayers
The proto-oncogene tyrosine-protein kinase Src is a key ele- ment of signaling cascades involved in the invasive and meta- stasis-forming capacity of cancer cells. While membrane ty- rosine-kinase receptors are known to ...
An overview of nanomedicines for neuron targeting
Medical treatments of neuron-related disorders are limited due to the difficulty of targeting brain cells. Major drawbacks are the presence of the blood-brain barrier and the lack of specificity of the drugs for the diseased ...
Selective detection of Cu2+ and Co2+ in aqueous media: asymmetric chemosensors, crystal structure and spectroscopic studies
Two new azo-azomethine receptors, H2L1 and H2L2, containing hydrazine, naphthalene and different electron withdrawing groups, Cl and NO2, have been designed and synthesized for qualitative and quantitative detection of ...
A supramolecular helicate with two independent Fe(ii) switchable centres and a [Fe(anilate)3]3− guest
A biphenyl-spaced bis-pyrazolylpyridine ligand interacts with ferrous ions to engender a dimetallic helical coordination cage that encapsulates an Fe3+ tris-anilate complex. The host–guest interaction breaks the symmetry ...
A novel nucleophilic approach to 1-alkyladenosines. A two-step synthesis of [1-N-15] adenosine from inosine
A novel ANRORC mechanism in the reaction of 1-(2,4-dinitrobenzenesulfonyl)inosines with amines has allowed the preparation of 1-alkyladenosines and [1-15N]adenosines in a straightforward way from inosines.
Carboxylato bridging Cu(II) coordination polymer: Structure, magnetism and catalytic reduction of nitrophenols
The 1D coordination polymer, [Cu 2 ( μ2 -OH) 2 (DABA) 2 ] n ( 1 ), (HDABA = 4-Diallylamino-benzoic acid) is characterized by Single crystal X-Ray diffraction analysis. The structure switches to a 2D geometry by hy- drogen ...
Nanocàpsules polimèriques per a l'alliberament controlat de fàrmacs
El càncer és una de les malalties que causa més morts als països desenvolupats. En aquest article s'ofereix un resum dels diferents tractaments d'aquesta malaltia, els quals han anat evolucionant cap a teràpies cada vegada ...
A photoactivatable PtIV anticancer complex conjugated to the RNA ligand guanidinoneomycin
A photoactivatable platinum(IV) complex, trans,trans,trans-[Pt(N3)2(OH)(succ)(py)2] (succ=succinylate, py=pyridine), has been conjugated to guanidinoneomycin to study the effect of this guanidinum-rich compound on the ...
A cyclometallated IrIII complex conjugated to a coumarin derivative is a potent photodynamic agent against prostate differentiated and tumorigenic cancer stem cells
A cyclometalated IrIII complex conjugated to a far-red-emitting coumarin, IrIII-COUPY (3), was recently shown as a very promising photosensitizer suitable for photodynamic therapy of cancer. Therefore, the primary goal of ...
Luminescent tetranuclear gold(I) dibenzo[g,p]chrysene derivatives: effect of the environment on photophysical properties
A new 2,7,10,15-tetraethynyldibenzo[g,p]chrysene ligand (1) and two tetranuclear gold(I) derivatives containing PPh3 (3) and PMe3 (4) phosphines were synthesized and characterized by 1H and 31P NMR, IR spectroscopy, and ...
The nuclear receptor LXR limits bacterial infection of host macrophages through a mechanism that impacts cellular NAD metabolism
Macrophages exert potent effector functions against invading microorganisms but constitute, paradoxically, a preferential niche for many bacterial strains to replicate. Using a model of infection by Salmonella Typhimurium, ...
Sensitizing, sensing and chemical separation of Tb(III) ions: All in a novel T copper metal-organic framework
The importance of rare earth elements in high-tech materials has promoted the necessity to develop new materials for sensing and separating them. Luminescent metal-organic frameworks (MOFs) due to their promising applications ...
A coumarin based gold(I)-alkynyl complex: a new Q1 class of supramolecular hydrogelators
A phosphine-gold(I)-alkynyl-coumarin complex, [Au{7-(prop-2-ine-1-yloxy)-1-benzopyran-2-one}-(DAPTA)] (1), was synthesized and the formation of long luminescent fibers in solution was characterized via fluorescence microscopy ...
