Showing papers in "Chemical Communications in 2001"

TL;DR: Aggregation greatly boosts emission efficiency of the silole, turning it from a weak luminophor into a strong emitter.

TL;DR: The use of ionic liquids as novel reaction media may offer a convenient solution to both the solvent emission and the catalyst recycling problem, as well as in supercritical carbon dioxide.

TL;DR: Using a seed-mediated growth approach in a rod-like micellar media, silver nanorods of varied aspect ratio were prepared from nearly spherical 4 nm silver nanoparticles as mentioned in this paper.

TL;DR: Alkylimidazolium tetrafluoroborates are promising versatile lubricants for the contact of steel/steel, steel/aluminium, steel/(100), steel/copper, steel’sialon ceramics, Si3N4/SiO2 and steel/Si(100) show excellent friction reduction, antiwear performance and high load-carrying capacity.

TL;DR: In this paper, the task-specific functionality of metal ligating groups, such as those commonly used in preparing ion liquids (ILs), are derived from impidazolium cations.

TL;DR: The application of self-assembly to the solid state offers an approach to crystal design and crystal engineering, namely supramolecular synthesis of solids, that is based upon the design of infinite networks.

TL;DR: In this article, a coordination approach to planar exo-multidentate organic ligands (molecular panels) was proposed to assemble into large three-dimensional polyhedra through metal-coordination.

TL;DR: A range of novel, moisture-stable, Lewis-acidic ionic liquids has been prepared by mixing appropriate molar ratios of MCl2 and quaternary ammonium salts and the influence of substituent Y and metal M on the physical properties of the melts has been investigated.

TL;DR: The solubility of small diameter single-wall carbon nanotubes in several organic solvents is described in this paper, and characterization in 1,2-dichlorobenzene is reported.

TL;DR: A new approach for the deep desulfurization of diesel fuels by extraction with ionic liquids is described, using Na6(CO3)(SO4) as a raw material and Na2SO4 as a solvent.

TL;DR: In this article, newly synthesized coumarin derivatives work as highly efficient photosensitizers for dye-sensitized nanocrystalline TiO2 solar cells, producing a 5.6% solar-light-to-electricity (SLoE) conversion efficiency.

TL;DR: In this paper, the properties of solid heteropoly catalysts are described, together with important principles required for the understanding and design of solid Heterpoly(oxometalates) catalysts.

TL;DR: New families of salts viz. quaternary ammonium, N-alkyl-N-methylpyrrolidinium or 1-ethyl-3-methylimidazolium dicyanamide, Cat+N(CN)2−, are low melting compounds, most being liquid at rt, water-miscible and have low (for ionic liquids) viscosity.

TL;DR: In this paper, a polyaniline/multi-wall carbon nanotube (PANI/MWNT) composite has been successfully synthesized by an in-situ polymerization process.

TL;DR: The water soluble complex [Ru(η6-p-cymene)Cl2(pta)] (pta = 1,3,5-triaza-7-phosphatricyclo[3.3.1.1]decane), exhibits pH dependent DNA damage; the pH at which damage is greatest correlates well to the pH environment of cancer cells.

TL;DR: A paradigm shift away from using solvents in organic synthesis as solventless reactions can lead to improved outcomes, and more benign synthetic procedures, in for example aldol condensation reactions and oligomerisation reactions for the synthesis of cavitands.

TL;DR: The stoichiometric splitting of water into H2 and O2 (H2/O2 = 2) under visible light irradiation took place for the first time using a mixture of Pt-WO3 and Pt-SrTiO3 (Cr-Ta-doped) photocatalysts and an IO3-/I- shuttle redox mediator.

TL;DR: In this article, the reaction of IrCl3 with fluorinated 2-arylpyridines was investigated in the presence of AgO2CCF3, and the results showed that the resulting complexes exhibited excellent processing and electroluminescent properties which can be fine-tuned via systematic control of the nature and position of the substituents on the aromatic rings.

TL;DR: The possibility of incorporating non-natural amino acids increases the versatility of protein engineering still further, and it is expected that such methods will have large impact in the field of materials science, and especially in biomedical materialsScience, in the future.

TL;DR: The bis-carbene precursor, 1, gives a thermally very robust γPd(II) catalyst for Heck coupling that maintains activity even in boiling diethylacetamide (bp 184 °C) in air.

TL;DR: The solvent strength and polarity of four imidazolium and pyridinium based ionic liquids, as measured using two different fluorescent probes, indicate that these liquids are more polar than acetonitrile but less polar than methanol as mentioned in this paper.

TL;DR: A novel method for preparing highly photoactive nano-sized TiO2 photocatalysts with anatase and brookite phases has been developed by hydrolysis of titanium tetraisoproproxide in pure water or a 1:1 EtOH-H2O solution under ultrasonic irradiation.

TL;DR: Initial studies suggest that pharmaceutically active compounds including diclofenac, gemfibrozil, ibuprofen, naproxen, 2-propylpentanoic acid and tolfenamic acid may have application as the basis of a novel tuneable drug delivery system.

TL;DR: In this article, room temperature ionic liquids have potential as extractants for butyl alcohol extraction from fermentation broth; water solubility in ionic liquid and ionic Liquid Solubility (LSL) in water are important factors for selectivity of butyl Alcohol extraction from aqueous solutions.

TL;DR: The transfer of strontium ion from acidic nitrate media into a series of 1-alkyl-3-methylimidazolium-based room-temperature ionic liquids containing dicyclohexano-18-crown-6 is shown to proceed via cation-exchange, in contrast to conventional solvents such as alkan-1-ols.

TL;DR: Lipases show good activity and, in some cases, improved enantioselectivity when employed in pure ionic liquids for dynamic kinetic resolution of 1-phenylethanol by transesterification.

TL;DR: From a two-phase mixture of water and oil (either commercial fuel or pure organic solvent), a simple amino acid derivative, N-lauroyl-L-alanine has been shown to be able to gelate the oil phase selectively as mentioned in this paper.

TL;DR: 2-Pyridylmethylimidazolium salts and IrH5(PPh3)2 give an species with the imidazole ring bound in the 'wrong way': at C-5, not at the expected C-2.

TL;DR: Alizarin Red S.A. displays a dramatic change in fluorescence intensity and color in response to the binding of a boronic acid and can be used as a general reporter for studying carbohydrate-boronic acid interactions, both quantitatively and qualitatively.

TL;DR: Rational design and synthesis of polynuclear lanthanide–hydroxo species via ligand-controlled hydrolysis of the lanthanides ions yielded a series of highly sophisticated yet structurally well-defined lanthanid–hydrogen complexes that are potentially applicable to the study of biomimetic catalysis of phosphate diester cleavage.