Showing papers in "Chemical Communications in 1999"

TL;DR: In this paper, a mesoporous carbon with regular three-dimensionalally interconnected 2 nm pore arrays using AlMCM-48 as a template has been synthesized, which exhibited excellent performance as an electrochemical double layer capacitor.

TL;DR: In this paper, the ground state interporphyrin conjugation was found to be amplified in the excited states, and in the oxidised and reduced forms of conjugated porphyrin polymers.

TL;DR: Once homogeneously dissolved, the fullerenes and fullerene derivatives exhibit an interesting range of biological activities, especially promising in the field of photodynamic therapy, HIV, neuroprotection and apoptosis.

TL;DR: In this paper, the synthesis and characterization of new periodic mesoporous organosilicas, PMOs, containing benzene and thiophene groups within the channel walls, is presented.

TL;DR: In this paper, the photoelectrochemical properties of polycrystalline Cu2O electrodes are discussed with regard to the application of the oxide as a photocatalytic material for water splitting.

TL;DR: In polyoxometalate chemistry, a large variety of compounds, clusters and solid-state structures can be formed by linking together metal-oxygen building blocks as discussed by the authors, resulting for instance in the high-yield synthesis of inorganic superfullerenes and giant ring-shaped, electron-rich, mixed-valence polyoxomolybdates with nanosized cavities.

TL;DR: In this paper, a photoelectrochemical solar cell made from a porous film consisting of a mixture of tin (IV) and zinc oxides sensitized with a ruthenium bipyridyl complex suppresses recombination of the photogenerated electrons and dye cations.

TL;DR: The PCP pincer complexes, IrH2{C6H3(CH2PR2)2-2,6} (R = But, Pri) are extraordinarily active and robust catalysts for aliphatic dehydrogenation reactions.

TL;DR: The following conclusions have been obtained on the basis of various kinetic and spectroscopic evidence: for the hydrolysis of both DNA and RNA, the catalytically active species are dinuclear hydroxo-clusters, and CeIV enormously activates DNA and promotes the formation of the pentacoordinated intermediate.

TL;DR: The surface chemistry of silicon wafers has remained relatively unexplored as discussed by the authors, while surface oxide has served thus far as the main passivation route, there is strong interest in precisely tailoring the interface properties, not only for microelectronics, but also for sensors, MEMS and biologically active surfaces.

TL;DR: The rigidity of the coordination polymer framework of Ni2(4,4′-bipy)3(NO3)4 is demonstrated quantitatively by determination of the structures of both ethanol-loaded and desolvated forms, showing only a small relaxation of the structure on guest loss.

TL;DR: In this paper, the authors show that thiol-functionalized nanostructured silicas with uniform porosities exhibit selective complexation affinity for Hg2+, while other metal ions (Cd2+, Pb2+, Zn2+, Co3+, Fe3+, Cu2+ and Ni2+) have little or no binding ability with the adsorbents.

TL;DR: One-pot synthesis of 5,10,15-triphenylcorrole has been achieved by reaction of benzaldehyde with an excess of pyrrole; the triphenylphosphinocobalt complex has been structurally characterized using X-ray crystallography as discussed by the authors.

TL;DR: In this article, donor-doped perovskite materials with a generic composition of AmBmO3m+2 (m = 4, 5; A = Ca, Sr, La; B = Nb, Ti) loaded with nickel have been found to be efficient photocatalysts for overall water splitting with quantum yields as high as 23% under UV irradiation.

TL;DR: In this article, single walled carbon nanotubes (SWNTs) exhibit similar capillarity properties to those exhibited by multiple walled WNNTs, and can be filled in high yield (up to ca. 50%) by the liquid phase method.

TL;DR: In this paper, the authors proposed a constrained space synthesis method for zeolite synthesis, which allows preparation of nanosized ZSM-5 crystals with a controlled crystal size distribution.

TL;DR: Aluminium-incorporated SBA mesoporous materials have been obtained for the first time by direct synthesis; the resulting materials retain the hexagonal order and physical properties of purely siliceous SBA-15 and present higher catalytic activities in the cumene cracking reaction than AlMCM-41 materials as mentioned in this paper.

TL;DR: In this article, the synthesis and characterisation of the first {2Fe2S}-cluster bearing both CO and CN ligands is described; the iron atoms are linked by the bridging 1,3-propanedithiolate unit that has been identified in the crystallographic structure of the sub-unit of the H-centre of the all-iron hydrogenase from Desulfovibrio desulfuricans.

TL;DR: In this article, a highly active and selective catalyst for the production of methyl propanoate via the methoxycarbonylation of ethene is described, based on the new zero valent palladium complex L2Pd(dba), where L2 = 1,2-bis(di-tert-butylphosphinomethyl)benzene and dba = trans,trans-dibenzylideneacetone.

TL;DR: In this article, the authors discuss current knowledge of the properties of these readily available and processable organometallic polymers together with recent developments made possible by the discovery of living anionic and transition metal-catalyzed ROP routes.

TL;DR: In this article, multi-point recognition with strong and weak hydrogen bonds between solvent and solute molecules facilitates the retention of organic solvents in crystals and facilitates the recognition of solutes.

TL;DR: The first example of the promotion of gold by sulfur was reported in this paper, showing that supported gold catalysts increased the rate of formation of the unsaturated alcohol for the hydrogenation of the α,β-unsaturated aldehyde, crotonaldehyde.

TL;DR: In this paper, a microreactor was designed for use with elemental fluorine, both for selective fluorination and for perfluorination of organic compounds, and it was used for a variety of applications.

TL;DR: In this paper, the air and moisture stable system [bmim][BF4] and [Ru4(η6-C6H6)4] for hydrogenation of arenes is presented.

TL;DR: The structure of N,N′,N″-tris(2methoxyethyl)benzene-1,3,5-tricarboxamide consists of aryl rings self-assembled using a novel conjunction of organizational motifs into a π-stack surrounded by a triple helical network of hydrogen bonds, in a manner suggestive of a new mode of organization for some columnar liquid crystals.

TL;DR: In this article, a side reaction to produce a photostable byproduct took place when 1,2-bis(2-methyl-5-phenyl-3-thienyl)perfluorocyclopentene was irradiated in deaerated hexane with ultraviolet light.

TL;DR: In this article, the authors used atom transfer radical polymerization at 20 °C using various initiators to obtain high yield (>95%) within short reaction times and polydispersities were as low as 1.12.

TL;DR: In this article, a three-component oligonucleotide/DNA layered assembly on a Au-electrode was used as a specific biosensor for the analysis of the Tay-Sachs mutant by means of Faradaic impedance spectroscopy.

TL;DR: In this article, a variety of catalytic reactions are used to add inter-heteroatom bonds to carbon-carbon unsaturated linkages and provide high yield syntheses of synthetically versatile heteroatom compounds.

TL;DR: In this paper, it was shown that DBU is the optimum catalyst for the Baylis-Hillman reaction, providing adducts at much faster rates than using DABCO or 3HQD.