Centella asiatica extract-SiO nanocomposite: More than a drug-delivery system for skin protection from oxidative damage.

An innovative nanotechnology-based approach was used for the preparation of Centella asiatica (C. asiatica) extract-SiO nanocomposites, specifically tailored for skin protection from oxidative damage. Different amounts of C.

Green Preparation of Antimicrobial 1D-Coordination Polymers: and by Ultrasonication of Zn(II) Salts and 4,4'-Bipyridine.

We report on the green preparation of one-dimensional metal coordination polymers by sonochemical approach. The spacer ligand 4,4'-bipyridine was ultrasonicated with chloride or acetate zinc salts to obtain and , respectively. Benign solvents such as ethanol and water were selected as reaction media, and the synthesis took place in a few minutes-a very short time compared to conventional methods where some days' synthesis is required.

A New One-Pot Way to Prepare Enzyme-Containing Coordination Polymers by Sonochemistry.

Enzyme-containing Coordination Polymers (CPs) were prepared by a one-pot sonochemical method, mixing Glucose Oxidase (GOx) enzyme, 4,4'-bipyridine as spacer ligand, and chloride zinc salt. The reaction took place in a very short time (a few minutes) with a minimum use of solvents compared to conventional methods. The obtained composite material, named GOx-[Zn(4,4'-bipy)Cl₂], resulted from embedding the GOx molecules into uniformly sized [Zn(4,4'-bipy)Cl₂] nanocrystals.

Microemulsions: The of Ferrite Nanoparticle Synthesis.

Ferrite nanoparticles (NPs) are of special interest for a wide range of applications. Microemulsions represent the of ferrite NP preparation offering a series of advantages with respect to other methods due the possibility to confine reactions into nanosized reactors. They allow the preparation in mild synthesis conditions of a wide variety of nanostructured ferrites with controlled composition, particle size and shape.