Showing papers in "Chemical Communications in 2009"

TL;DR: The restriction of intramolecular rotation is identified as a main cause for the AIE effect and a series of new fluorescent and phosphorescent AIE systems with emission colours covering the entire visible spectral region and luminescence quantum yields up to unity are developed.

TL;DR: A facile, economical microwave pyrolysis approach is presented to synthesize fluorescent carbon nanoparticles with electrochemiluminescence properties and it is shown that this approach can be economical and scalable.

TL;DR: The present article deals with the synthetic technologies leading to organic carbonates using CO(2) as a raw material.

TL;DR: The present review addresses the formation, properties and applications not only of TiO(2) nanotubes but also of related transition metal oxides.

TL;DR: New synthetic methods and the application of starburst triarylamines are described, highlighting the applications in photovoltaic and optoelectrical fields.

TL;DR: The photoluminescence in carbon dots could be quenched efficiently by electron acceptor or donor molecules in solution, thus offering new opportunities for their potential uses in light energy conversion and related applications.

TL;DR: The careful design of reagents and catalysts now provides efficient conditions for exquisitely selective intramolecular as well as intermolecular nitrene C-H insertion and opens new opportunities complementary to those offered by nitrenes.

TL;DR: By surface-assisted coupling of specifically designed molecular building blocks, the fabrication of regular two-dimensional polyphenylene networks with single-atom wide pores and sub-nanometer periodicity is demonstrated.

TL;DR: A facile method to obtain polydisperse chemically-converted graphene sheets that are covalently functionalized with ionic liquid was reported -- the resulting graphene sheets, without any assistance from polymeric or surfactant stabilizers, can be stably dispersed in water, DMF, and DMSO.

TL;DR: The historical background and the efforts made to realize the catalytic utilization of hypervalent iodine reagents are highlighted, especially with focus on iodine(iii).

TL;DR: The ample panorama of different approaches the chemists world-wide have employed to face the challenge of fluoride binding is described, and some of the research which in this view can contribute to the development of this field are outlined.

TL;DR: Graphene sheets were stably dispersed in water by functionalization with sulfonated polyaniline (SPANI), and the composite film of SPANI-functionalized graphene showed improved electrochemical stability and enhanced electrocatalytic activity.

TL;DR: A binary spacer of orderly conjugated 3,4-ethyldioxythiophene and thienothiophene is employed to construct a wide-spectral response organic chromophore for dye-sensitized solar cells, exhibiting a high power conversion efficiency and excellent stability.

TL;DR: A new technology has been developed that accomplishes the direct conversion of urine and urea to pure hydrogen via electrochemical oxidation with an inexpensive nickel catalyst.

TL;DR: This feature article summarizes the presently known selective diffluoromethylation and monofluorometHylation methods, including nucleophilic, electrophilic, and free radical di- and mon ofluorometric hylation reagents and reactions.

TL;DR: Coupled ZnO/CdS heterostructures based on the Z-scheme mechanism are demonstrated to be highly active photocatalysts for H(2) evolution under simulated solar light irradiation due to the greatly prolonged lifetime of photoexcited carriers.

TL;DR: Recent developments of TTF-based molecular and supramolecular systems in this respect are discussed, including molecular sensors, redox-fluorescent switches, multi-input systems for logic gates, electrochemically-driven conformational controls, molecular clips and tweezers, andRedox-controlled gelation processes.

TL;DR: Extension of the self-assembly approaches to single wall carbon nanotubes results in SWNT-porphyrin/phthalocyanine nanohybrids capable of undergoing photoinduced electron transfer.

TL;DR: A novel supramolecular polymer system, in which the terminal pyrenyl groups of a polyamide intercalate into the chain-folds of apolyimide via electronically-complementary pi-pi stacking, shows both enhanced mechanical properties and facile healing characteristics as a result of the thermoreversibility of non-covalent interactions.

TL;DR: Poly(anthraquinonyl sulfide) is synthesized and investigated as a novel organic cathode material for rechargeable lithium batteries, which shows excellent reversibility and cyclabilty and gives important insights into developing a new generation oforganic cathode materials with higher performance.

TL;DR: The design of hypervalent iodine catalysts is focused on and the discovery and development of the oxidation of alcohols with the stoichiometric or catalytic use of hyperValent iodine compounds is reviewed.

TL;DR: The role of the ionic liquid anion in determining the structure of the synthesised solid, the role of mineralisers such as water and fluoride, and the targeted use of unstable ionic liquids to produce new inorganic and inorganic-organic hybrid materials are discussed.

TL;DR: Layer-by-layer films comprised of alternating graphene and gold nanoparticle layers are readily produced by the two-step procedure involving the use of vacuum filtration of a reduced graphene oxide solution to fabricate the graphene thin film on the quartz substrate.

TL;DR: An overview of recent findings in the synthesis, evaluation and application of dual-modality molecular imaging probes is provided, which represents an important challenge to synthetic chemists.

TL;DR: Recent trends in metal complexes include the use of chemically inert metal complexes as structural scaffolds for the design of enzyme inhibitors, new strategies for inducing selective coordination chemistry at the protein binding site, recent advances in the development of catalytic enzymes inhibitors, and theDesign of metal complexes that can inject electrons or holes into redox enzymes.

TL;DR: A metal organic framework with amine-lined pores gives high values for surface area and heat of adsorption with CO(2) gas.

TL;DR: Cu(I)-diamine complexes were found to catalyse the trifluoromethylation of aryl iodides and the cross-coupling reactions of iodoarenes with trif fluorine-based aromatics proceeded smoothly to afford triffluorometHylsilanes in good yields.

TL;DR: Action spectrum analyses showed that visible light-induced oxidation of 2-propanol by aerated gold-modified titanium(IV) oxide (titania) suspensions is initiated by excitation of gold surface plasmon, and polychromatic irradiation experiments revealed that the photocatalytic reaction rate depends strongly on properties of titania.

TL;DR: Some of the recent developments in direct molecular oxygen-coupled Pd(II)-catalyzed oxidation reactions with an emphasis on enhanced catalytic systems and new reactions are highlighted.

TL;DR: These partially formed CB[n]-type receptors known as nor-seco-CB[n] display intriguing properties such as chiral recognition, homotropic allostery, and function as aldehyde reaction cucurbituril synthons.