Rotary biomolecular machines rely on highly symmetric supramolecular structures with rotating units that operate within a densely packed frame of reference, stator, embedded relatively rigid membranes. The most notable examples are the enzyme FoF1 ATP synthase and bacterial flagellum, which undergo rotation in steps determined by symmetries their rotators units. Speculating precise control rotational dynamics environments will be essential for development artificial molecular machines, we...

A series of 10 (2−11) new chiral (salicylaldiminato)tin Schiff base complexes obtained from the condensation 4-(diethylamino)salicylaldehyde and various amino acids, in presence diphenyltin oxide, is reported together with parent achiral (1) derivative. Compounds 2−7 crystallize P212121 orthorhombic space group, their quadratic nonlinear optical properties are investigated. At molecular level, derivatives possess similar electronic spectra (λmax ≈ 395 nm), hence hyperpolarizabilities (β),...

Nanotechnology has been used for every single modality in the molecular imaging arena purposes. Synergic advantages can be explored when multiple modalities are combined with respect to modalities. Multifunctional nanoparticles have large surface areas, where functional moieties incorporated, including ligands site-specific targeting and radionuclides, which detected create 3D images. Recently, radiolabeled individual properties attracted great interest regarding their use multimodality...

Abstract The removal of pathogenic organisms from water and wastewater by electrochemical methods has gained increasing attention due to their very high efficiency, easy applicability in real world processes. In this regard there are several approaches utilizing different electrode materials accomplish the pollutant removal. This minireview highlights how electrocoagulation, direct electrooxidation indirect used remove microorganisms sources, including industrial municipal wastewater....

A series of eighteen new 'push–pull' molecules obtained by self-assembly salicylideniminophenols and various phenylboronic acids is reported. Electric field-induced second-harmonic measurements the nonlinear optical response reveal that nature phenylboron moieties has a modest influence on molecular hyperpolarizabilities (β). The crystal data available suggest possibility easy rotation phenyl substituents, with an energy barrier around 10 kcal mol−1, while computational investigation...

Abstract An electrochemical sensor for metronidazole (MTZ) was built via the surface modification of a carbon paste electrode (CPE) by film obtained through electropolymerization α‐cyclodextrin (CPE α‐CD ). The CPE characterized cyclic voltammetry (CV) and atomic force microscopy (AFM), both techniques demonstrated that polymer is coating surface. electroreduction behaviour MTZ in HClO 4 media as supporting electrolyte studied differential‐pulse voltammetric (DPV) technique. DPV process...

Industrial offset printing processes generate wastewater with highly colored obtaining values of 5x106 Pt-Co units and great chemical oxygen demand (COD) 5.3x10-5 mg L-1. Thus, conventional technologies such as biologicals treatment fail in reaching the discharge limits. In this research, a sequential was applied: coagulation aluminum hydroxychloride (AHC), electrocoagulation Al anodes finally ozonation. Optimal conditions are found when adding 20 L-1 AHC, followed by at 4 A for 50 min,...

Inclusion compounds formed between sertraline stereoisomers and β-cyclodextrin, 2-hydroxypropyl-β-cyclodextrin, were analyzed by using quantum chemistry methods. The exploration of the potential energy surface was performed chemical intuition classical molecular mechanics. This approach delivered around 200 candidates for low adducts, which optimized through PBE0/6-31G(d,p) method, after this process solvent effects considered continuous model. analysis showed that β-cyclodextrin...

A new method for the conversion of trichloromethyl compounds into corresponding thiolacetates by treatment with sodium thiolacetate in presence thiolacetic acid is described. This transformation proceeds at room temperature high yield when a strong electron-withdrawing substituent attached to group.

Two new di(phthalimidomethyl)-1,2,3-triazole derivatives have been synthesised using 1,3-dipolar-cycloadditions under thermal and copper catalysed conditions from N-(azidomethyl)phthalimide N-prop-2-ynylphthalimide. The molecular structure of both starting materials was studied by X-ray crystallography. A complete DFT analysis the alkyne azide compounds carried out.

We report dynamic holographic imaging with organic photorefractive polymer composites, doped the electro-optic chromophore (2-(p-chlorophenyl)-(3′-nitrobenzo[d])-(4 ′′ -methoxybenzo[h])-1,3-dioxa-6-aza-2-boracyclonon-6-ene, a push-pull molecule derived from new class of boronates. The composites are based on photoconductor poly(9-vinylcarbazole) (PVK) as matrix, and 9-ethylcarbazole (ECZ) plasticizer, fullerene C 60 sensitizer. A tilted four-wave mixing geometry was used to record...

Abstract Deformations of the three most common cyclodextrins ( , and ) were induced to form inclusion compounds with sertraline abacavir. The deformations obtained from classical molecular dynamics (CMD) using as starting point X‐ray structures. performed in two ways, over without presence a guest. Two characteristic rings within these used measure distortions observed along dynamics. A docking approach was build structures CMD or Thus, we compared by guest intrinsic exhibited each...

Veterinary RecordVolume 158, Issue 15 p. 518-519 Short Communication Congenital holoprosencephaly with severe otocephaly in a rottweiler puppy J. S. Martínez DrSc, DrSc Centro de Investigación y Estudios Avanzados en Salud Animal, Facultad Medicina Veterinario Zootecnio, Universidad Antónoma del Estado México, Carretera Cuoto Toluca, Atlacomulco km 15. 5, 50200 MexicoSearch for more papers by this authorI. R. Velázquez MVZ, I. MVZ authorH. Reyes H. Hospital Pequeñas Especies, Zootecnia,...

An important group of antiemetic drugs used in the treatment nausea and vomiting after chemotherapy containing an indole moiety their structures, working as 5- hydroxytryptamine type 3 serotonin receptor antagonist (5-HT3). This study focuses on compounds bearing core that present a 5-HT3 activity, which have been successfully for reducing adverse secondary effects during cancer treatment. Their synthesis, biological activities, some outstanding characteristics are discussed, providing...