Water-soluble cationic conjugated poly(phenylene vinylene) (PPV) and cationic fullerene were complexed with negatively charged single stranded DNA and double stranded DNA via electrostatic interactions to achieve photoinduced charge transfer with efficiencies as high as those observed from oppositely charged, cationic PPV and anionic fullerene but with distinctly different quenching mechanisms.

Traditional processing of kaolin is achieved by dispersion of the mined ore and classification by means of multistage hydrocyclones. The inefficiencies inherent to cyclones produce a middling product that is commonly disposed back to the quarry. In this research recovery of kaolinite from tailings of the Zonoupz kaolin washing plant, which is located in Iran, was investigated by cationic flotat...

The objective of this study was to reexamine the general statement declaring that cationic and anionic species cannot be compatible in cosmetic products. This research demonstrated there are considerable differences between binding preservatives various compounds used cosmetics, depending on functional group. Sulfate- sulfonate-based molecules showed significantly stronger interactions with sur...

The tubular aqueous assembly of dinucleobase amphiphilic monomers endowed with anionic, neutral or cationic groups is investigated under diverse conditions.

The molecular charge of the macromolecule, horseradish peroxidase (HRPase, 40 000 mol. wt), was modified to yield highly anionic (PI less than 3.68) and cationic (PI = 9.5-10.5) derivatives. The effects upon the interactions between HRPase and arterial endothelium were then studied in vitro. The net rate of uptake of HRPase into endocytic vesicles and vacuoles of confluent endothelium was influ...

The use of nanoparticles (NPs) in biology and medicine requires a molecular-level understanding of how NPs interact with cells in a physiological environment. A critical difference between well-controlled in vitro experiments and in vivo applications is the presence of a complex mixture of extracellular proteins. It has been established that extracellular serum proteins present in blood will ad...

This article contains data on the Laser Scanning Confocal Microscopy (LSCM) and Transmission Electron Microscopy (TEM) images related to multi-scaled self-assemblies resulting from 'green' cationic glycine betaine surfactant/anionic kappa-carrageenan interactions. These data gave clear evidence of the evolution of the micron-, nano-sized structures obtained at two surfactant/polymer molar ratio...

The synthesis of a supramolecular ionic network, its physical properties, and the use of this network property to form macroscopic porphyrin fibers are described. These ionic networks are compared to ionic liquids. Current ionic liquid compositions have a charge and molar ratio of 1:1 where an anionic species is matched with a cationic species; however, alteration of this molar ratio while main...