Read by QxMD icon Read

inorganic chemistry

Patrice Berthod
No abstract text is available yet for this article.
December 1, 2016: Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials
Alicia Merve Dilmac, Eduard Spuling, Armin de Meijere, Stefan Bräse
Propellanes are a unique class of compounds with well over 10000 members with an inverted tetrahedral configuration featuring a weak single bond between two carbon atoms linked by three additional bridge. Not only structurally interesting, these propella-type compounds exhibit unusual reactivities. In this review, we highlight their synthesis and applications in material sciences, natural product chemistry and medicinal chemistry. We feature the chemistry of [1.1.1]propellane like the synthesis of oligomeric and polymeric structures derived from it such as bicyclo[1...
November 30, 2016: Angewandte Chemie
Saliu A Amolegbe, Caroline A Akinremi, Sheriff Adewuyi, Amudat Lawal, Mercy O Bamigboye, Joshua A Obaleye
Metal coordination of bioorganic compounds from both natural and synthetic products is not only gaining recognition in drug design and medicinal inorganic chemistry research, also they are being considered in the improvement of the bioactivity of drugs. What is done in this paper is a review of recent advances in the study of coordination-driven drug delivery, i.e., metal-based drugs (MBDs). The role of some late first row transition metal ions namely Fe, Cu and Zn in the biological activities of metallodrugs such as antimalarials and antimicrobials are highlighted...
November 30, 2016: Journal of Biological Inorganic Chemistry: JBIC
Ashley M Smith, Kathryn A Johnston, Scott E Crawford, Lauren E Marbella, Jill E Millstone
Colloidal inorganic nanoparticles are being used in an increasingly large number of applications ranging from biological imaging to television displays. In all cases, nanoparticle surface chemistry can significantly impact particle physical properties, processing, and performance. The first step in leveraging this tunability is to develop analytical approaches to describe surface chemical features. Some of the most basic descriptors of particle surface chemistry include the quantity, identity, and arrangement of ligands appended to the particle core...
November 30, 2016: Analyst
Jonas G Croissant, Xavier Cattoën, Jean-Olivier Durand, Michel Wong Chi Man, Niveen M Khashab
Organic-inorganic hybrid materials garner properties from their organic and inorganic matrices as well as synergistic features, and therefore have recently attracted much attention at the nanoscale. Non-porous organosilica hybrid nanomaterials with a high organic content such as silsesquioxanes (R-SiO1.5, with R organic groups) and bridged silsesquioxanes (O1.5Si-R-SiO1.5) are especially attractive hybrids since they provide 20 to 80 weight percent of organic functional groups in addition to the known chemistry and stability of silica...
November 29, 2016: Nanoscale
David W Green, Besim Ben-Nissan, Kyung Sik Yoon, Bruce Milthorpe, Han-Sung Jung
Coral skeletons can regenerate replacement human bone in nonload-bearing excavated skeletal locations. A combination of multiscale, interconnected pores and channels and highly bioactive surface chemistry has established corals as an important alternative to using healthy host bone replacements. Here, we highlight how coral skeletal systems are being remolded into new calcified structures or synthetic corals by biomimetic processes, as places for the organized permeation of bone tissue cells and blood vessels...
November 23, 2016: Trends in Biotechnology
S A Watmough, T Rabinowitz, S Baker
Emissions of pollutants from highways can exert multiple stresses on adjacent ecosystems. In this study air concentrations of NO2 and throughfall deposition of inorganic N (NO3(-) and NH4(+)), SO4(2-), Cl(-), base cations and several metals were measured in all four seasons along a 1.5km hardwood forest gradient extending away from a major highway (Highway 401) in southern Ontario, Canada. Soil and lichen chemistry and herbaceous plant and epiphytic lichen species composition were measured within the hardwood forest to evaluate impacts of these pollutants...
November 22, 2016: Science of the Total Environment
Shaoheng Tang, Chuanqi Peng, Jing Xu, Bujie Du, Qingxiao Wang, Rodrigo D Vinluan, Mengxiao Yu, Moon J Kim, Jie Zheng
Identifying key factors that govern the in vivo behavior of nanomaterials is critical to the clinical translation of nanomedicines. Overshadowed by size-, shape-, and surface-chemistry effects, the impact of the particle core density on clearance and tumor targeting of inorganic nanoparticles (NPs) remains largely unknown. By utilizing a class of ultrasmall metal NPs with the same size and surface chemistry but different densities, we found that the renal-clearance efficiency exponentially increased in the early elimination phase while passive tumor targeting linearly decreased with a decrease in particle density...
November 24, 2016: Angewandte Chemie
Fathi Zereini, Clare L S Wiseman, Jana Poprizki, Peter Albers, Wolfgang Schneider, Kerstin Leopold
Palladium (Pd) emitted from vehicles equipped with exhaust catalytic converters has been accumulating at a greater rate relative to other platinum group elements (PGE) in the last 10-20 years. Little is known, however, regarding the various environmental factors and conditions which are likely to modulate the chemical behavior and bioaccessibility of this element post-emission. To meet data needs, soils and a Pd model substance were treated with solutions containing common anions (Cl(-), NO3(-), SO4(2-) und PO4(3-)) to shed light on the geochemical behavior of emitted Pd under ambient conditions...
November 19, 2016: Environmental Pollution
Hyo-Joong Kim, Yoshihiro Furukawa, Takeshi Kakegawa, Andrei Bita, Romulus Scorei, Steven A Benner
RNA is currently thought to have been the first biopolymer to support Darwinian natural selection on Earth. However, the phosphate esters in RNA and its precursors, and the many sites at which phosphorylation might occur in ribonucleosides under conditions that make it possible, challenge prebiotic chemists. Moreover, free inorganic phosphate may have been scarce on early Earth owing to its sequestration by calcium in the unreactive mineral hydroxyapatite. Herein, it is shown that these problems can be mitigated by a particular geological environment that contains borate, magnesium, sulfate, calcium, and phosphate in evaporite deposits...
November 9, 2016: Angewandte Chemie
Sarah Tepler Drobnitch, Kerry Nickols, Matthew Edwards
In the Monterey Bay region of Central California, the giant kelp Macrocystis pyrifera experiences broad fluctuations in wave forces, temperature, light availability, nutrient availability, and seawater carbonate chemistry, all of which may impact their productivity. In particular, current velocities and light intensity may strongly regulate the supply and demand of inorganic carbon (Ci) as substrates for photosynthesis. M. pyrifera can acquire and utilize both CO2 and bicarbonate (HCO3(-) ) as Ci substrates for photosynthesis and growth; given the variability of carbon delivery (due to current velocities and varying [DIC]) and demand (in the form of saturating irradiance) we hypothesized that the proportion of CO2 and bicarbonate utilized is not constant for M...
November 11, 2016: Journal of Phycology
A J Paula, H Koo
Recent advances in nanotechnology provide unparalleled flexibility to control the composition, size, shape, surface chemistry, and functionality of materials. Currently available engineering approaches allow precise synthesis of nanocompounds (e.g., nanoparticles, nanostructures, nanocrystals) with both top-down and bottom-up design principles at the submicron level. In this context, these "nanoelements" (NEs) or "nanosized building blocks" can 1) generate new nanocomposites with antibiofilm properties or 2) be used to coat existing surfaces (e...
November 16, 2016: Journal of Dental Research
Zhiguo Xia, Andries Meijerink
Garnets have the general formula of A3B2C3O12 and form a wide range of inorganic compounds, occurring both naturally (gemstones) and synthetically. Their physical and chemical properties are closely related to the structure and composition. In particular, Ce(3+)-doped garnet phosphors have a long history and are widely applied, ranging from flying spot cameras, lasers and phosphors in fluorescent tubes to more recent applications in white light LEDs, as afterglow materials and scintillators for medical imaging...
November 11, 2016: Chemical Society Reviews
Katia Martina, Silvia Tagliapietra, Alessandro Barge, Giancarlo Cravotto
The combination of microwave heating and ultrasound irradiation has been successfully exploited in applied chemistry. Besides saving energy, these green techniques promote faster and more selective transformations. The aim of this review is to provide a practical overview of the complimentary and synergistic effects generated by the combination of microwaves and either ultrasound or hydrodynamic cavitation. This will begin with a brief history, as we outline pioneering achievements, and will also update the reader on recent developments...
December 2016: Topics in Current Chemistry (Journal)
Wenliang Gu, Suqin Gong, Yunlong Zhou, Yunsheng Xia
We herein present an effective and versatile platform for ratiometric sensing of metabolites using intrinsically dual-emitting ZnS:Mn(2+) quantum dots (QDs) as sole reporter. To avoid notoriously non-specific interactions, a special triple-layer "filter screen" around the inorganic QD core is rationally constructed, which is made of oleic acid, cetyltrimethyl ammonium bromide and bio-enzymes. In the presence of the analytes, the in-situ enzymatic H2O2 molecules diffuse and pass through the "filter screen" along the molecule interspace, which then reacts with the inorganic core and leads to more dramatically quenching of the Mn(2+) emission...
October 28, 2016: Biosensors & Bioelectronics
Jeffery A Aguiar, Maulik Patel, Toshihiro Aoki, Sarah Wozny, Mowafak Al-Jassim
Earth-abundant sustainable inorganic thin-film solar cells, independent of precious elements, pivot on a marginal material phase space targeting specific compounds. Advanced materials characterization efforts are necessary to expose the roles of microstructure, chemistry, and interfaces. Herein, the earth-abundant solar cell device, Cu2ZnSnS(4-x)Se x , is reported, which shows a high abundance of secondary phases compared to similarly grown Cu2ZnSnSe4.
June 2016: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
Tamara J Bednarchuk, Vasyl Kinzhybalo, Adam Pietraszko
Hybrid materials, fabricated by the combination of inorganic and organic components, have potential applications in chemistry and are endowed with the advantages of both building elements. There are several types of intermolecular interactions present in these hybrid compounds, including electrostatic forces, π-π stacking and hydrogen-bonding interactions, the latter playing an important role in the construction of three-dimensional architectures and stabilizing supramolecular crystal structures. Analysis of the intermolecular interactions and their influence on packing modes therefore requires focused scientific attention...
November 1, 2016: Acta Crystallographica. Section C, Structural Chemistry
Kiyoshi Fujisawa, Ayaka Kuboniwa, Mercedesz Kiss, Robert K Szilagyi
Tris(pyrazolyl)hydroborate ligands have been utilized in the fields of inorganic and coordination chemistry due to the ease of introduction of steric and electronic substitutions at the pyrazole rings. The development and use of the tris(pyrazolyl)hydroborate ligand, called a `scorpionate', were pioneered by the late Professor Swiatoslaw Trofimenko. He developed a second generation for his ligand system by the introduction of 3-tert-butyl and 3-phenyl substituents and this new ligand system accounted for many remarkable developments in inorganic and coordination chemistry in stabilizing monomeric species while maintaining an open coordination site...
November 1, 2016: Acta Crystallographica. Section C, Structural Chemistry
Natalia Chubar, Vasyl Gerda, Dipanjan Banerjee, Ganna Yablokova
In this work, we present material chemistry in the hydrothermal synthesis of new complex structure materials based on various dosage ratios of Fe and Ce (1:0, 2:1, 1:1, 1:2, 0:1), characterize them by the relevant methods that allow characterization of both crystalline and amorphous phases and correlate their structure/surface properties with the adsorptive performance of the five toxic anions. The applied synthesis conditions resulted in the formation of different compounds of Fe and Ce components. The Fe-component was dominated by various phases of Fe hydrous oxides, whereas the Ce-component was composed of various phases of Ce carbonates...
October 24, 2016: Journal of Colloid and Interface Science
David H Petering
Understanding the molecular basis of inorganic chemical toxicity has lagged behind the proliferation of detailed mechanisms that explain the biochemical toxicology of many organic xenobiotics. In this perspective, general barriers to explicating the bioinorganic chemistry of toxic metal are considered, followed by a detailed examination of these issues in relation to the toxicology of Cd(2+). The hypothesis is evaluated that Cd(2+) damages cells by replacing Zn(2+) in key Zn-proteins. Emerging methodology to assess the speciation of metals among cell proteins is described...
November 2, 2016: Chemical Research in Toxicology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"