Showing papers in "Chinese Chemical Letters in 2015"

TL;DR: In this paper, the interaction of pristine and Al-doped BN nanosheets with an N 2 O molecule was investigated using density functional theory calculations, and it was found that unlike the pristine sheet, the Aldoped sheet can effectively interact with the N 2O molecule so that its electronic properties and conductivity are dramatically changed.

TL;DR: Recent advances on controlled drug delivery systems based on calixarenes, in the form of inclusion complexes, amphiphilic self-assembly nanocarriers including micelles, hydrogels, vesicles and liposomes, and supramolecular nanovalves on mesoporous silica nanomaterials are summarized.

TL;DR: In this article, a magnetic Fe3O4@C@MgAl-layered double-hydroxide (LDH) nanoparticles have been successfully prepared by the chemical self-assembly methods.

TL;DR: In this paper, the development of nano-MOF materials as chemical sensors, including the synthetic methodologies for designing NMOF sensory materials, their luminescent properties and potential sensing applications.

TL;DR: In this paper, FT-IR spectra combined with SD-IR, correlation coefficients and 2D IR spectra are employed to analyze the chemical modifications of teak (Tectona grandis L.F.) wood during steam-heat treatment under treatment temperatures from 120°C to 220°C at intervals of 20°C.

TL;DR: In this paper, a new highly efficient and reusable Cu(I)-MOF has been developed for the synthesis of propargylamine compounds via the three-component reaction of secondary amines, alkynes, and aromatic aldehydes under solvent-free conditions.

TL;DR: A pair of indole alkaloid enantiomers with a novel bisindolylacetamide skeleton, insatindibisindolamides A and B (1a and 1b), was isolated from an aqueous extract of Isatis indigotica roots as discussed by the authors.

TL;DR: In this article, a one-pot and highly efficient protocol for the synthesis of pharmaceutically interesting functionalized 2-amino-3-cyano-4 H -pyran and spirooxindole derivatives has been developed using commercially available CsF as a catalyst in the reaction of malonitrile and aryl aldehydes or isatins with 1,3-cyclohexanediones.

TL;DR: In this paper, two distinguished approaches were used to synthesize potential DESs, given as the direct heating and the evaporating methods, which were subjected for physical properties characterization by Fourier Transform Infrared (FTIR) Spectroscopy, thermal stability, viscosity, and conductivity analyses.

TL;DR: Antimicrobial assays showed that the beads/AgNPs concentration can be modulated to deliver an amount of Ag+ necessary for kill Escherichia coli cells.

TL;DR: In this article, a 120° V-shaped 4,4″-dicyano-1,1′:3′,1″-terphenyl molecules and Fe atoms on Au(1.1/1) were constructed by using low-temperature scanning tunneling microscopy and Monte Carlo simulations were performed to understand the formation mechanism of the surface-supported fractal crystals.

TL;DR: In this article, the effect of the in situ hydrolysis of 2-cyanopyridine and its derivatives on the synthesis of dimethyl carbonate (DMC) from CO 2 and methanol over CeO 2.

TL;DR: Magnetically separable CuO nanoparticles supported on graphene oxide (Fe 3 O 4 NPs/GO-CuO NPs) were synthesized and characterized for the preparation of propargylamines in EtOH, at 90°C as mentioned in this paper.

TL;DR: In this article, metal-based ionic liquids (ILs) were synthesized and used as extractants for the desulfurization of dibenzothiophene (DBT) in simulated fuel oil.

TL;DR: In this article, the effects of nano-ceramic filler titanium oxide (TiO2) have been investigated on the ionic conductance of polymeric complexes consisting of poly(vinyl chloride) (PVC)/poly(ethyl methacrylate)(PEMA), and lithium perchlorate (LiClO4).

TL;DR: The in vitro cytotoxicity testing of the synthesized compounds was performed against cervical cancer and kidney fibroblast cancer cell lines and indicated that all tested compounds have IC50 values >50 μmol/L against both cell lines.

TL;DR: In this article, ultrafine Ru nanoparticles are successfully deposited on MCM-41 by using a simple liquid impregnation-reduction method, and further investigated for catalytic hydrolysis of ammonia borane and methylamine Borane.

TL;DR: In this paper, an efficient one-pot synthetic protocol was developed for the synthesis of imidazo[1,2-a]pyridines from easily available starting materials: Aromatic ketones, α,β-unsaturated ketones and β-keto esters.

TL;DR: In this article, a polyoxygenated dihydropyrano[2,3-c]pyrrole-4,5-dione derivative, pyranonigrin F (1), together with a related known compound, prinigrin A (2), were isolated and identified from Penicillium brocae MA-231, an endophytic fungus obtained from the fresh tissue of the marine mangrove plant Avicennia marina.

TL;DR: In this article, a minireview describes the strategies for synthesis of fluorinated surfactants potentially non-bioaccumulable, including reducing the length of the perfluorocarbon chain, introducing hetero atoms into the fluoroccarbon chain, and introducing branch (herein and after branch means the fluoro-carbon chain section is not straight).

TL;DR: In this article, a simple and sensitive electroanalytical method for determination of shikonin, a widely used anti-tumoral agent, using β-cyclodextrin-functionalized multiwalled carbon nanotubes composite modified glassy carbon electrodes (MWCNTs/β-CD/GCE) was presented.

TL;DR: Wang et al. as discussed by the authors used spectral analysis and chiral HPLC analysis of the acidic hydrolysates of Paecilomyces variotii EN-291 to identify dihydrocarneamide A (1) and iso-notoamide B (2).

TL;DR: In this paper, in situ using sunlight and cationic surfactants, silver nano-particles were confirmed using UV-vis spectrophotometry, transmission electron microscopy (TEM), electron diffraction, dynamic light scattering (DLS) and FTIR.

TL;DR: A review of 2D correlation spectroscopy can be found in this article, where 2D hetero-correlation and multiple perturbation correlation analyses, including orthogonal sample design scheme, are discussed.

TL;DR: In this paper, a poly(styrene-co-acrylonitrile)-graft polyethylene glycol (SAN-g-PEG) copolymer was synthesized as new solid-solid phase change materials (SSPCMs) by grafting PEG to the main chain of poly(stylene co-acricyl-carotenitrile) and the chemical structure was confirmed by the Fourier transform infrared (FT-IR) and proton nuclear magnetic resonance (1 H NMR) spectroscopy techniques.

TL;DR: In this article, an on-line pretreatment liquid chromatography-tandem mass spectrometer system for sensitive, reliable and higher throughput analysis of chloramphenicol in honey was developed.

TL;DR: Two new 1-(6′-O-acyl-β-d -glucopyranosylpyridinium-3-carboxylates, lonijaponinicotinosides A (1) and B (2), were isolated from an aqueous extract of the flower buds of Lonicera japonica as mentioned in this paper.

TL;DR: In this article, the three-dimensional net-like textural structures of these as-electrospun spinel-type NiFe 2 O 4 nanofibers were shown to have abundant micro/meso/macropores on their surface.

TL;DR: Nano titania-supported sulfonic acid (n-TSA) has been found to be a highly efficient, eco-friendly and recyclable heterogeneous nanocatalyst for the solvent-free synthesis of 2,4,6-triarylpyridines through one-pot three-component reaction of acetophenones, aryl aldehydes and ammonium acetate as discussed by the authors.

TL;DR: In this paper, a nanomagnetic base catalyst was developed for the synthesis of pyranopyrazole derivatives and the reactions were carried out at room temperature in 50:50 water/ethanol with excellent yields (88-95%).