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CHEMISTRY, GOLD, and SOLAR cells

The article presents abstracts of research on chemistry which include gold chemistry, organic electronics and solar cells.

ARTIFICIAL photosynthesis, OXIDATION of water, HOMOGENEOUS catalysis, OXYGEN-evolving complex (Photosynthesis), and SUSTAINABLE chemistry

This essay for EurJIC's special issue on "Redox Catalysis for Artificial Photosynthesis" introduces the reader to the field of water oxidation using molecular catalysts. The most essential challenge our society must address during the 21st century is perhaps the realization of a system for producing sustainable energy on the global scale. Currently, there exists an urgent need to develop effective and economical carbon‐neutral or carbon‐free energy technologies. The production of solar fuels through water splitting constitutes a key enabling element. The construction of robust and efficient catalysts for oxidation of water is therefore essential. In this essay the progress and mechanistic considerations pertaining to molecular water oxidation catalysts are described and discussed from a personal perspective. [ABSTRACT FROM AUTHOR]

POLYOXOMETALATES, ELECTROCHEMISTRY, IONIC liquids, ORGANIC chemistry, CHEMICAL precursors, ELECTRONIC structure, and OXIDATION-reduction reaction

The synthesis and characterization of two new organic/inorganic hybrid polyoxometalate ionic liquids (POM‐ILs) is described. The POM‐ILs were formed by pairing bulky trihexyl(tetradecyl)phosphonium cations [THTP]+ with organosiloxane and organophosphonate‐functionalized Keggin‐type POMs [PW11O39(SiPh)2O]3– and [PW11O39{P(O)Ph}2]3–. The functionalized POM‐ILs were found to be more thermally stable than their molecular precursors and comparison of their electrochemical properties showed that the tunable electronic structures of the POM anions determined the redox chemistry of the hybrid materials. Two hybrid polyoxometalate ionic liquids (POM‐ILs) were formed by pairing bulky phosphonium cations with organosiloxane and organophosphonate‐functionalized Keggin‐type polyoxometalates. The hybrid POM‐ILs were found to exhibit rich electrochemistry determined by the nature of the POM modification, and to be more thermally stable than their molecular precursors. [ABSTRACT FROM AUTHOR]

BIPYRIMIDINE, ORGANOMETALLIC chemistry, ORGANIC chemistry, COORDINATION polymers, POLYMERS, and METAL ions

The three-component reaction of the tetrahedral diphosphorus complex [Cp2Mo2(CO)4(η2-P2)] ( 1), with Ag[BF4] ( 2) in the presence of 2,2′-bipyrimidine ( 3) leads to the formation of the two novel two-dimensional networks 4 and 5. Compound 4 is a new two-dimensional organometallic-organic hybrid polymer, while derivative 5 represents a unique two-dimensional organometallic-inorganic-organic hybrid polymer. These results show the possibility of synthesizing a new class of coordination polymers, which could not be obtained from two-component reactions with organic molecules in addition of metal ions. [ABSTRACT FROM AUTHOR]

CARBON dioxide fixation, BIOMIMETICS (Chemistry), LIGANDS, LIGAND exchange reactions, and ORGANIC chemistry

Carbon dioxide fixation with zinc complexes of the anionic tris(triazolyl)borate (Ttz) ligand offers biomimetic structures in a hydrophilic environment. However, the synthetic result depends greatly on the steric bulk of the Ttz ligand. Synthetic routes adapted from the synthesis of (Tp)ZnOH have been applied to bulky Ttz ligands, but side products often result because Ttz frequently forms complexes with +1 metals or cations used in the synthesis. Nonetheless, (Ttz tBu,Me)ZnOH ( 1) has been successfully synthesized and crystallographically characterized, but only via the hydrolysis of the zinc (hexamethylsilyl)azide complex ( 6). With less bulky ligands, namely TtzPh,Me, routes expected to form LZnOH lead instead to bis(ligand) products, namely [(TtzPh,Me)2Zn] ( 12). The use of ligands of intermediate steric bulk has led to the isolation of (Ttz iPr2)ZnOH ( 2a) which fixes atmospheric CO2 to produce [(Ttz iPr2)Zn]2(μ-η1-η2-CO3) ( 2b). This activation of CO2 from air is irreversible. We report the crystal structures of 2b and related molecules used for synthesis and structural comparison: (Ttz iPr2)ZnCl ( 7), [(Ttz iPr2)Cu(μ-OH)]2 ( 9), and [(Ttz iPr2)Cu(μ-Cl)]2 ( 10). [ABSTRACT FROM AUTHOR]

BENZENE, ORGANIC chemistry, ESCHERICHIA coli, PEPTIDES, and MARINE natural products

Review of the articles including “Benzene - Clearing the Fog" by D. Bradley, which appeared in the periodical “ChemViews" magazine, "Total Synthesis of (+)-Petromyroxol, a Marine Natural Product" by S. Gahalawat, Y. Garg and S. K. Pandey, which appeared in "Asian Journal of Organic Chemistry" and "Ribosomal Synthesis of Natural-Product-Like Bicyclic Peptides in Escherichia coli" by N. Bionda, R. Fasan, which appeared in "ChemBioChem" magazine is presented.

SOLID state chemistry, CHALCOGENS, CHEMICAL reactions, ORGANIC chemistry, and ALKYL compounds

Distibines Sb2R4 (R = Me, Et) react with elemental chalcogens (E = S, Se, Te) with insertion into the Sb-Sb bond and formation of the corresponding bis(dialkylstibanyl)sulfanes, -selenanes, and -telluranes (R2Sb)2E. The structures of (Et2Sb)2S ( 1), (Et2Sb)2Te ( 3), and (Me2Sb)2Te ( 4) were determined by single-crystal X-ray diffraction. The complexes either adopt a syn- syn ( 1, 4) or syn- anti conformation ( 3) in the solid state. In addition, the compounds have different intermolecular interaction modes, which depend on the bridging chalcogen and the organic substituent bound to the Sb atoms. [ABSTRACT FROM AUTHOR]

ORGANIC chemistry, PHOSPHORINE, and OLIGONUCLEOTIDES

Abstracts of articles related to organic chemistry are presented including the "Developments in the Coordination Chemistry of Phosphinines" What Are the Parameters Controlling Inter- vs. Intra-Strand DNA Photodamage with Ru-TAP Oligonucleotides?" and "Syntheses and Coordination Studies of 2-(Phosphanylmethyl)pyridine Dioxide toward Silver (I)."

POLYMERS, ELECTROCATALYSIS, METALLOCENES, HYDROSILYLATION, PLATINUM electrodes, ELECTROLYTIC reduction, OXIDATION, and HYDROGEN peroxide

Two types of hyperbranched ferrocene-containing polycarbosilanes were obtained by hydrosilylation of polydiallylmethylsilane (hb-PDAMS) and polymethyldiundecenylsilane (hb-PMDUS) with diferrocenylmethylsilane. The redox properties of both polymers have been investigated both in solution and confined onto platinum electrodes. The electrocatalytic activity of polymer-modified electrodes toward the reduction of oxygen as well as the electrochemical reduction and oxidation of hydrogen peroxide has been examined. [ABSTRACT FROM AUTHOR]

INORGANIC chemistry periodicals, CHEMISTRY periodicals, and ORGANIC chemistry

We introduce this themed issue of the European Journal of Inorganic Chemistry with a short overview of hybrid inorganic-organic materials. Hybrid materials have been used in society since antiquity, in fact the creative musings regarding hybridization began in ancient mythology. Now hybrid materials are ubiquitous, and so for clarity they have been divided into different classes and subgroups. These are explained and illustrated with notable synthetic and natural examples. The second half of this overview is devoted to some speculation about the future potential of hybrid materials based on some of the most exciting areas of development, such as artificial photosynthetic leaves, metamaterials, molecular machines, theranostics, 3D printing, nuclear waste storage, and the exploration of life's extraordinary evolutionary origins. [ABSTRACT FROM AUTHOR]

NANOPARTICLES, SURFACE chemistry, SURFACE active agents, REVERSED micelles, SOLVENTS, SODIUM, and ORGANIC chemistry

The inside cover picture shows the high versatility of reverse micelles as nanoreactors. The composition of the nonpolar organic medium has a huge effect on properties such as the interfacial micropolarity, the hydrogen‐bonding ability, and the sequestrated water structure of sodium 1,4‐bis(2‐ethylhexyl)sulfosuccinate (AOT) reverse micelles (RMs). Therefore, not only gold nanoparticles (in n‐heptane) but also evidence of subnanometer clusters (in benzene) was obtained by using RMs as nanoreactors. The results are very promising for many applications. Details are discussed in the article by N. M. Correa et al. on p. 2095 ff. [ABSTRACT FROM AUTHOR]

ORGANIC chemistry and EDITORIAL boards

Information about the journal is presented, such as its editorial board, international advisory board, and copyright.

ORGANIC chemistry and MAGAZINE covers

The cover picture shows the various aspects that influence the mechanism of interaction of NO with transition‐metal complexes of biological and environmental relevance in solution. The underlying reaction mechanism is, in many cases, an unsolved puzzle, such that the key to a specific aspect can reveal details not known or not understood before. In this way, different aspects such as the nature of the metal complex, solvent and experimental conditions (temperature and pressure) can play a key role. Details are presented in the Microreview by A. Franke and R. van Eldik on p. 460 ff. [ABSTRACT FROM AUTHOR]

ORGANIC chemistry, COPYRIGHT, and ONLINE information services

Information about the journal is presented, such as its contact information, online services and copyright.