Search Results(9,117 results)
Mechanistic studies of alkane dehydrogenation by a (phenyl-di-(xylyl)imine)iridium complex
Dehydrogenation of alkanes to yield olefins is of great interest in view of the versatility of olefins as intermediates and reagents. Iridium complexes of PCP-type pincer ligands have been intensively studied as catalysts for alkane dehydrogenation, .... Read More
Teaching Boyle’s law through dry laboratory approach promoting statistical analysis in general chemistry laboratory
Gas laws are introduced in most undergraduate and high-school chemistry courses. We discuss the use of a simple Gas Law Apparatus from Flinn Scientific to discover Boyle’s law of a gas in a general chemistry laboratory. Students collected data using .... Read More
Efficient depolymerization of polystyrene with table salt and oxidized copper
The global production of polystyrene (PS) has exceeded 15 million metric tons in 2019 because of its widespread use in packaging and non-packaging sectors. Therefore, the development of efficient and low-cost recycling strategies for PS are highly de.... Read More
Photocatalysis of functionalized fluorinated phthalocyanines
Functionalized fluorinated phthalocyanines RfAPcZn, Rf = a combination of aromatic F and i-C3F7 groups, A = a functional group, in this case –COOH, exhibit at least in part the robustness of the parent, non.... Read More
PaS: A biodegradable polysarcosine
Polysarcosine (PSar) is a water-soluble poly(α-amino acid) as an alternative of PEG. As PSar is non-biodegradable, the excretion of the high molecular weight PSar should be taken into consideration. In the presentation, we report an alanine-containin.... Read More
Infrared microfluidics for monitoring of molecular adsorption
Optofluidic platforms have manifold possible applications as lab-on-chip or organ-on-chip systems for cell, bio- or environmental-analytics as well as pharmaceutical research and diagnostics. Applications of an optofluidic platform in reflection geom.... Read More
Theoretical study on the production of green hydrogen from the Larimar wind farm in the Dominican Republic.
Green hydrogen has taken relevance worldwide in the strategies and public policies that seek carbon neutrality by 2030, despite the high costs and difficulties of its management, hydrogen presents excellent opportunities for industrial use (in oil re.... Read More
Photodegradation of organic dyes by surface re-engineered polymers that incorporate fluorinated catalysts
Epoxy-modified siloxane coatings that incorporate supported organic-inorganic photocatalysts generate reactive oxygen species (ROS) using visible light and O2. Thermal templating with ammonium hydrogen carbonate imparts near superhydrophob.... Read More
Measuring size-dependent enthalpy alterations in dry milled white rice via bomb calorimetry
Rice is a popular customary food product that is often processed for various uses via milling procedures. This study uses dry milled white rice to find correlations between grinding time, temperature changes during the grinding process, and the entha.... Read More
Study on crystal form of steroid sex hormone drugs
The polymorph study of nearly 20 steroid sex hormone drugs was carried out. It was found that the advantage pharmaceutical polymorphs had improved water solubility and bioavailability. The dosage of drugs could be reduced to one third, and the side e.... Read More
Naphthyl-based dipodal ureas for anion binding
Anion binding with neutral receptor is important due to the critical role played by anions in chemistry and biology. During these studies, two naphthyl-based urea receptor have been synthesized, showing interactions for anion as investigated by UV-Vi.... Read More
Oligophenylene vinylene derivatives: Synthesis and applications in a gold mechanically-controlled break junction
We report the synthesis of new oligophenylene vinylene derivatives having isocyanide (IC) linker groups for their investigation as molecular wires in gold mechanically-controlled break junctions (MCBJs). We have previously reported the investi.... Read More
Novel lead compounds demonstrating anti-biofilm properties in Staphylococcus aureus may act as Nor-A efflux pump inhibitors.
Numerous studies have shown that bacteria quantify their density and collectively carry out a certain response with a communication mechanism known as quorum sensing. Biofilms are a type of virulence factor that forms once a bacterial quorum is reach.... Read More
Application of pulse-heated analysis of solid reactions (PHASR) to promote a circular plastic economy: Intrinsic kinetics of polypropylene pyrolysis
Over the past several decades, there has been a rapid and continual growth in global polymer production due to the increasing demand for plastics in modern life. This growth in plastic production has resulted in billions of tons of plastic waste, the.... Read More
Silicate metal complexes as a versatile intermediate for synthesis of metal nanoparticles and nanostructures
Metal nanoparticles exhibit characteristics that are different from the bulk state, such as large surface to volume ratio and size-dependent properties, e.g, plasmon resonances in noble metal. The excitation of plasmon resonance (the collective oscil.... Read More
Two isomers with trans-aa5,2 stereochemistry was calculated with 3-sphere trigonometric equations approach at circle inversion motion from NMR data
The circles of sphere or cyclide inversion gives two isomers with trans-aa5,1 stereochemistry between 3JHH of 6 – 6.3 and 7.1 – 7.9[Hz], or one trans-aa and other trans-ee between 6.4 and 7.... Read More
Chemical bulletin by the Chicago Section ACS: Engaging chemists for over one hundred years
A variety of historical treasures are found in the 109 volumes of The Chemical Bulletin, the newsletter of the Chicago Section of the American Chemical Society. Originally titled The Chicago Chemical Bulletin, our publication predated C.... Read More
Extending density Matrix embedding theory to study local perturbations in solid-state materials
Understanding the electronic structure of localized perturbations in crystalline materials often requires accurate as well as affordable correlated wave function-based methods. Examples of such localized perturbations include solid-state defects or t.... Read More
Elucidation of reaction pathways of ring cleavage products from chlorination of 13C labelled model phenols
Despite decades of research on chlorination of phenolic compounds, uncertainties remain regarding the reaction mechanism and identification of the ring cleavage products. In addition to the well-recognized ring cleavage products chloroform and chloro.... Read More
Self-assembly of peptides into a porous and dynamic protein-like lattice by π-stacking
Self-assembled peptide–metal frameworks comprised of ≤ 3 residues have shown great promise as proteomimetic materials capable of performing complex functions. Their development has been limited by a lack of mutability and availability of side-chains .... Read More