Bipyridine-and benzimidazole-based ligands for the self-assembly of Co4L6 cages were synthesised in short reaction times and high isolated yields directly from aryl halide precursors using a copper-free one-pot Sonogashira-type coupling. This one-pot method circumvents the often time-consuming and challenging ligand synthesis for the preparation and application of cages.

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The unique properties of nanoparticles have made them popular materials for a wide variety of applications. Their prevalence has increased research attention to their potential toxicity, and multiple groups have found that certain nanoparticles are biologically hazardous and can induce autophagy, oxidative stress, nucleic acid damage, and cell membrane damage. In particular, multiple studies have investigated interactions between nanoparticles and cell membranes. Here, we use a high throughput artificial lipid bilayer platform capable of high resolution electrical measurements of bilayer conductance to screen for interaction between lipid bilayers and metal oxide and rare earth metal oxide nanoparticles 15-200 nm in diameter composed of:

This article presents a method for service life prediction of concrete structures. The proposed method aims to estimate the performance of a concrete structure through its permeability to carbon dioxide penetration, in order to verify its accordance to Brazilian standards. This case study is based on an inspection made in an educational building in the city of Porto Alegre, Rio Grande do Sul, Brazil. Through carbon dioxide penetration, non-destructive and partial destructive tests, an estimated service life design for the concrete structure was elaborated. These tests were carried out in the parking lot because there is a greater vulnerability of the structure in terms of concentration of vehicles and lack of finishing, such as mortars or paints. The tests carried out showed that the selected concrete pieces were carbonated from 2.9 to 4.4 mm deep, a situation whose prognosis suggests a superior performance in accordance with the parameters set in ABNT NBR 15575:2013.

<div> <p>Bipyridine- and benzimidazole-based ligands for the self-assembly of Co₄L₆ cages were synthesised in short reaction times and high isolated yields directly from aryl halide precursors using a copper-free one-pot Sonogashira-type coupling. This one-pot method circumvents the often time-consuming and challenging ligand synthesis for the preparation and application of cages.</p> </div> <br>