Cationic palladium(II) complexes have been found to be highly reactive towards aromatic C-H activation of arylureas at room temperature. A commercially available catalyst [Pd(MeCN)4](BF4)2 or a nitrile-free cationic palladium(II) complex generated in situ from the reaction of Pd(OAc)2 and HBF4, effectively catalyzes C-H activation/cross-coupling reactions between aryl iodides, arylboronic acids...

We study the interaction of ds-DNA molecules with freestanding and supported cationic lipid bilayers. DNA fragments of different lengths (5, 10, 20, and 48 kbp) were adsorbed on lipid membranes consiting mainly of zwitterionic DOPC with added fractions of cationic DOTAP (1...10 %). Freestanding bilayers were modeled using giant unilamellar vesicles of sizes >100 μm. Supported lipid bilayers wer...

Both neutral and cationic iridium(III) complexes containing carborane units were synthesized. Bulky carboranes can significantly improve phosphorescence quantum yields of these complexes and the electronic effect of carboranes can evidently tune emission wavelengths of cationic complexes.

In this work, organomodified nanoclay has been used as the adsorbent for the removal ofbasic blue 41, cationic dye from an aqueous solution. The performance of the organomodified nanoclay was tested in a batch system under varying pH (2–12), adsorbent dosage (0.1–2 g L-1), initial dye concentration (10–60 mgL-1), and contact time (5- 100 min). The best conditions were achieved at pH of 7,...

A highly strained non-luminescent dibenzo-acridinium cationic compound is identified that undergoes in acetonitrile light-induced ring closure to create a highly fluorescent, planar, eight-ringed cationic anti-aromatic dye.

In this work, a highly efficient and rapid method for simultaneously removing cationic dyes from aqueous solutions was developed by using monodispersed mesoporous silica nanoparticles (MSNs) as the adsorbents. The MSNs were prepared by a facile one-pot method and characterized by scanning electron microscopy, transmission electron microscopy, Fourier-transform infrared spectroscopy, and Brunaue...

The type II cell of the alveolar epithelium of adult rats has been studied by electron microscopy to determine its ability to endocytose electron-dense tracers of differing molecular charge and size. The tracers studied were native (anionic) ferritin, cationic ferritin, 70-kilodalton dextran, and colloidal carbon. Alveolar macrophages ingested all tracers in large amounts, while type II cells t...

The purpose of the present work was to formulate and evaluate cationic poly(lactic acid)-poly(ethylene glycol) (PLA-PEG) nanoparticles as novel non-viral gene delivery nano-device. Cationic PLA-PEG nanoparticles were prepared by nanoprecipitation method. The gene loaded nanoparticles were obtained by incubating the report gene pEGFP with cationic PLA-PEG nanoparticles. The physicochemical prope...

In the present study, we developed some novel gene delivery vectors, coated cationic complexes with gamma-polyglutamic acid (gamma-PGA) for effective and safe gene therapy. Cationic complexes were constructed with pDNA and cationic vectors, such as poly-L-arginine hydrochloride (PLA), poly-L-lysine hydrobromide (PLL), N-[1-(2, 3-dioleyloxy) propyl]-N, N, N-trimethylammonium chloride (DOTMA)-cho...