Química Inorgànica i Orgànica: Envíos recientes
Mostrando ítems 421-440 de 1016
Supramolecular tripodal Au(I) assemblies in water. Interactions with a pyrene fluorescent probe
The synthesis of three gold(I) tripodal complexes derived from tripropargylamine and containing the water soluble phosphines PTA (1, 3,5-triaza-7-phosphaadamantane), DAPTA (3,7-diacetyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane) ...
Straightforward synthesis of cyclic and bicyclic peptides
Cyclic peptide architectures can be easily synthesized from cysteine-containing peptides with appending maleimides, free or protected, through an intramolecular Michael-type reaction. After peptide assembly, the peptide ...
Sequential uncaging with green light can be achieved by fine-tuning the structure of a dicyanocoumarin chromophore
We report the synthesis and photochemical properties of a series of dicyanocoumarinylmethyl (DEAdcCM)- and dicyanocoumarinylethyl (DEAdcCE)-based photocages of carboxylic acids and amines with absorption maximum around 500 ...
NMR approaches to study proteins integrating globular and disordered domains: the case of c-Src
Nuclear Magnetic Resonance is one of the most versatile structural biology tools. Its unique capacities remain unchallenged by the advances in other techniques, experimental, like cryo-electron microscopy, or computational, ...
Improved stability and spectral quality in ex situ dissolution DNP using an improved transfer device
Dissolution dynamic nuclear polarization (DNP) has become one of the predominant implementations for DNP. However, the technical implementation of transferring the sample from the polarizer to the nuclear magnetic resonance ...
Synthesis of 2-(4,6-dimethyoxy-1,3,5-triazin-2-yloxyimino) Derivatives: Application in Solution Peptide Synthesis
A new class of 1,3,5-triazinyloxyimino derivatives were prepared, characterized and tested for reactivity in solution peptide synthesis. The new triazinyloxyimino derivatives failed to activate the carboxyl group during ...
Substituent Effects in the Photophysical and Electrochemical Properties of Meso-Tetraphenylporphyrin Derivatives
Porphyrins were identified some years ago as a promising, easily accessible, and tunable class of organic photoredox catalysts, but a systematic study on the effect of the electronic nature and of the position of the ...
Gas adsorption, magnetism, and single-crystal to single-crystal transformation studies of a three-dimensional Mn(II) porous coordination polymer
A porous coordination polymer {[Mn2(DBIBA)3]×(NO3)·3DMF·4H2O}n (1) [DBIBAH = 3,5-di(1H-benzo[d]imidazol-1-yl)benzoic acid] has been synthesized solvothermally and structurally characterized by single-crystal X-ray diffraction. ...
Novel Heteroleptic Iridium(III) Complexes Containing COUBPY Ligands for Effective Photoinduction of Ferroptosis for Cancer Therapy
Ferroptosis, a recently described form of regulated, nonapoptotic cell death mechanism, presents significant potential for cancer treatment, particularly when combined with photodynamic therapy (PDT). In this study, we ...
Highly water-dispersible magnetite-supported Pd nanoparticles and single atoms as excellent catalysts for Suzuki and hydrogenation reactions
The molecule 4-(diphenylphosphino)benzoic acid (dpa) anchored on the surface of magnetite nanoparticles permits the easy capture of palladium ions that are deposited on the surface of the magnetite nanoparticles after ...
A myristoyl binding site in the SH3 domain modulates c-Src membrane anchoring
The c-Src oncogene is anchored to the cytoplasmic membrane through its N-terminal myristoylated SH4 domain. This domain is part of an intramolecular fuzzy complex with the SH3 and Unique domains. Here we show that the ...
Cathecol and Naphtol groups in Salphen-Type Schiff Bases for the preparation of polynuclear complexes
In this paper, we show a strategy to modify salphen-type Schiff base ligands with naphtol (SYML1) and pyrocathecol (2,3-dihydroxyphenyl) groups (SYML2), or a combination of both (ASYML). Each of these ligands can be used ...
Tailoring the microstructure by a proper electric current control in flash sintering: The case of barium titanate
Flash sintering is arousing growing interest because high-density ceramics can be obtained at lower temperatures and shorter dwell times than conventional sintering. However, not only temperature and dwell times should be ...
Microwave-Assisted hydrothermal carbonization and characterization of Amazonian biomass as an activated carbon for methane adsorption
Activated carbons were prepared from Amazonian biomass by means of microwave-assisted hydrothermal carbonization and activated with CO2. These materials were investigated as methane adsorption sorbents. The prepared samples ...
Structure of the N-terminal domain of the protein Expansion: an 'Expansion' to the Smad MH2 fold
Gene-expression changes observed in Drosophila embryos after inducing the transcription factor Tramtrack led to the identification of the protein Expansion. Expansion contains an N-terminal domain similar in sequence to ...
Designing a Dy-2 Single-Molecule Magnet with Two Well Differentiated Relaxation Processes by Using a Nonsymmetric Bisbidentate Bipyrimidine-N-Oxide Ligand: A Comparison with Mononuclear Counterparts
Herein we report a dinuclear [(μ-mbpymNO)- {(tmh)3Dy}2] (1) single-molecule magnet (SMM) showing two nonequivalent DyIII centers, which was rationally prepared from the reaction of Dy(tmh)3 moieties (tmh = 2,2,6,6-tetramethyl-3,5- ...
Time‐dependent cytotoxic properties of terpyridine‐based copper complexes
Five copper complexes supported by terpyridine ligand were prepared and characterized, viz. [Cu3Cl4(Naphtpy)2][CuCl2] (1), [Cu2Cl2(Naphtpy)2](ClO4)2 (2), [CuCl2(Naphtpy)]2(MeOH)3(H2O) (3), [CuCl2(Cltpy)] (4) and ...
Environment-responsive Pt(II) complexes boost aggregation-enhanced emission and singlet oxygen production
Here, we introduce an environment-tuning strategy to simultaneously boost aggregation-enhanced emission (AEE) and singlet oxygen (1O2) generation in PEGylated platinum(II) pyridyl complexes. Different amphiphilic Pt(II) ...
Solvation-guided design of fluorescent probes for discrimination of amyloids
The deposition of insoluble protein aggregates in the brain is a hallmark of many neurodegenerative diseases. While their exact role in neurodegeneration remains unclear, the presence of these amyloid deposits often precedes ...
Molecular memory near room temperature in an iron polyanionic complex
Single molecules are the smallest processable units for information storage and sensing. However, molecular phenomena are typically limited to very low temperatures. Thermal energy is able to depopulate (erase) the excited ...
